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          "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Error bars for the clinical variables according to the transplant period&#58; &#40;a&#41; PO<span class="elsevierStyleInf">2</span> values&#59; &#40;b&#41; FEV1&#37; values&#59; &#40;c&#41; 6-minute walk test values&#46;</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">A total of 37<span class="elsevierStyleHsp" style=""></span>581 lung transplants were carried out worldwide between January 1995 and June 2012&#44; 12<span class="elsevierStyleHsp" style=""></span>602 &#40;33&#46;5&#37;&#41; of which were due to chronic obstructive pulmonary disease &#40;COPD&#41;&#44; the most common reason for lung transplant&#44; followed by idiopathic pulmonary fibrosis and cystic fibrosis&#46; The COPD group does not include patients undergoing transplant for emphysema secondary to alpha-1 antitrypsin deficiency &#40;AATD&#41;&#44; which itself is the fourth indication for lung transplant&#44; with 2182 transplants conducted during this period&#44; accounting for 5&#46;8&#37; of the total&#46;<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">AATD is a genetic disease that is associated with low levels of alpha-1 antitrypsin &#40;AAT&#41; in blood and tissues&#44; and predisposes the individual to lung and liver disease&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">2</span></a> AATD emphysema is the most common potentially fatal congenital disease in adulthood&#44; and is also the most common cause of morbidity and mortality in patients with severe AATD&#46; Up to one third of patients have significant disability at a young age due to the respiratory disease&#44; and survival of these patients is lower than that of the general population&#46;<a class="elsevierStyleCrossRef" href="#bib0115"><span class="elsevierStyleSup">3</span></a> It is usually detected in advanced stages of the disease&#44; so it is highly underdiagnosed&#46;<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">4</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">Medical treatment of patients with AATD emphysema should include pharmacological and non-pharmacological measures common to COPD patients&#46; Moreover&#44; purified AAT from donor plasma for intravenous administration has been available since 1987&#46; The aim is to raise AAT levels in plasma and lung interstitium to prevent destruction of the parenchyma&#44; and arrest the progression of emphysema in selected patients&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">2</span></a></p><p id="par0020" class="elsevierStylePara elsevierViewall">Patients with COPD with or without AATD who present with significant functional deterioration may benefit from lung transplantation&#44; primarily to improve survival&#44; although there is little information on transplantation for AATD&#46;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a> The aim of this study was to describe the characteristics of patients with AATD emphysema on their arrival for lung transplantation compared to those of patients who received a transplant for COPD&#46; We also describe any changes observed in the clinical characteristics of patients evaluated for transplantation from the start of the lung transplant program to the present day&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Methods</span><p id="par0025" class="elsevierStylePara elsevierViewall">A cross-sectional observational study was conducted in patients evaluated for lung transplantation for COPD with and without AATD in Hospital Universitari Vall d&#8217;Hebron &#40;Barcelona&#44; Spain&#41; between July 1993 and August 2013&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">The study was carried out according to the principles of the Declaration of Helsinki and current regulations for conducting research studies in human subjects&#46; Patient confidentiality was maintained at all times&#44; in compliance with Spanish law 15&#47;1999 on Data Protection&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">The following data were collected at the time of the transplant evaluation&#58; medical history&#44; sociodemographic and clinical data&#44; and the findings of lung function tests&#44; arterial blood gases and 6-minute walk test &#40;6-MWT&#41;&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">Lung function tests were carried out using the MasterLab system &#40;MasterLab&#44; Jaegger&#44; Germany&#41;&#44; following the recommendations of the Spanish Society of Pulmonology and Thoracic Surgery &#40;SEPAR&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">6</span></a> The 6-MWT&#44; standardized according to international recommendations&#44; was used to evaluate exercise capacity&#46;<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">7</span></a></p><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Statistical Analysis</span><p id="par0045" class="elsevierStylePara elsevierViewall">Before analysis&#44; quality control was carried out to identify anomalous data in each variable&#46; Frequency and valid percent were determined in the case of the qualitative variables&#46; Central tendency &#40;mean&#44; median&#41;&#44; position &#40;quartiles&#41; and dispersion measures &#40;standard deviation and interquartile range &#91;IQR&#93;&#41; were calculated for the quantitative variables&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">In the case of qualitative variables&#44; patient characteristics were compared according to the year of transplant or group &#40;COPD with or without AATD&#41; using the Chi-squared test or Fisher&#39;s test &#40;if the observed frequency was &#60;5&#41;&#46; In the case of ordinal variables&#44; the linear trend was determined using Kendall&#39;s Tau-c coefficient&#46; Quantitative variables were compared using the Student&#39;s <span class="elsevierStyleItalic">t</span>-test &#40;&#60;2 categories&#41; and analysis of variance &#40;ANOVA&#41; &#40;in the case of variables &#62;2 categories&#41;&#44; linear trend test and multiple comparisons test &#40;Scheff&#233;&#41;&#46; Analysis was performed using the SPSS 19&#46;0 statistics package &#40;Chicago&#44; IL&#44; USA&#41;&#46; A significant difference was determined for all tests based on a <span class="elsevierStyleItalic">P</span> value &#60;&#46;05&#46;</p></span></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Results</span><p id="par0055" class="elsevierStylePara elsevierViewall">A total of 695 lung transplants were performed in Hospital Vall d&#8217;Hebron from1993 to 2013&#46; Of these&#44; 31&#46;2&#37; &#40;n&#61;217&#41; were carried out in patients with COPD and 8&#37; &#40;n&#61;19&#41; in patients with AATD emphysema&#46; Patients with AATD had homozygous PiZZ phenotype in 18 cases&#44; and 1 was homozygous for the rare PiY<span class="elsevierStyleInf">barcelona</span><a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">8</span></a> variant&#46;</p><p id="par0060" class="elsevierStylePara elsevierViewall">Patients included in the study had a mean age of 53&#46;1 &#40;SD&#58; 6&#46;6&#41; years at the time of the lung transplant evaluation&#44; and 80&#37; &#40;n&#61;189&#41; were men&#46; As regard smoking&#44; 95&#46;3&#37; of patients were former smokers and 2&#46;1&#37; were current smokers&#59; mean cumulative tobacco exposure was 48 pack-years &#40;SD&#58; 29&#41;&#46; Mean FEV<span class="elsevierStyleInf">1</span> &#40;&#37;&#41; was 22&#46;3&#37; &#40;SD&#58; 8&#46;8&#37;&#41;&#46; Arterial blood gases showed PO<span class="elsevierStyleInf">2</span> 60<span class="elsevierStyleHsp" style=""></span>mmHg &#40;SD&#58; 10&#46;8&#41; and PaCO<span class="elsevierStyleInf">2</span> 47&#46;4<span class="elsevierStyleHsp" style=""></span>mmHg &#40;SD&#58; 9&#46;7&#41;&#46; The mean distance walked in the 6-MWT was 231&#46;4<span class="elsevierStyleHsp" style=""></span>m &#40;SD&#58; 86&#46;6&#41;&#46; A total of 87&#46;2&#37; of patients were on long-term home oxygen therapy&#46;</p><p id="par0065" class="elsevierStylePara elsevierViewall">A trend toward an annual increase in the number of lung transplants for COPD was observed&#44; with a higher frequency in 2008&#44; 2010 and 2012 &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0070" class="elsevierStylePara elsevierViewall">To measure trends over time in patients referred for lung transplantation&#44; the study was divided into 3 periods&#46; Patients evaluated for transplantation in the last period &#40;2009&#8211;2013&#41; were older &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41;&#44; with a lower percentage of men &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41;&#44; with less FEV<span class="elsevierStyleInf">1</span> decline &#40;<span class="elsevierStyleItalic">L</span> and &#37;&#41; &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;038 and <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#44; respectively&#41;&#44; better exercise tolerance measured using the 6MWT &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;050&#41; and higher PO<span class="elsevierStyleInf">2</span> &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41; &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0075" class="elsevierStylePara elsevierViewall">On comparing the characteristics of patients with AATD emphysema and COPD&#44; the only differences observed were that patients with AATD were younger on average &#40;43 &#91;7&#46;7&#93; <span class="elsevierStyleItalic">vs</span> 53&#46;6 &#91;6&#46;1&#93; years&#59; <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#41;&#44; had less tobacco exposure &#40;23&#46;9 &#91;15&#93; <span class="elsevierStyleItalic">vs</span> 50 &#91;29&#93; pack-years&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;002&#41; and lower PCO<span class="elsevierStyleInf">2</span> &#40;41&#46;7 &#91;7&#46;6&#93; <span class="elsevierStyleItalic">vs</span> 47&#46;9 &#91;9&#46;7&#93; mmHg&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;004&#41; &#40;<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Discussion</span><p id="par0080" class="elsevierStylePara elsevierViewall">The results of this study show that the number of transplants performed for COPD increased in parallel with the number of total transplants&#46; Patients with COPD had very severe disease at the time of their transplant evaluation&#44; although the current trend is to evaluate patients at earlier stages&#46; Patients receiving transplants for COPD or AATD emphysema had similar characteristics at the time of the evaluation&#44; except that the latter were younger&#44; with less cumulative tobacco exposure&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">This study found that the number of transplants performed for COPD in our hospital echoes the increase observed in other countries&#44; reaching a peak in 2010&#8211;2012&#46; However&#44; the number of transplants carried out for AATD has declined since the start of the transplant program&#44; and accounts for only 2&#37; of the total&#46; In other countries&#44; the number of transplants performed for this reason have remained stable&#44; with rates varying from 6&#37; worldwide to 9&#37; in Sweden&#44;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a> even though the number of new diagnoses of AATD emphysema has fallen in Sweden&#44; probably due to the significant drop in smoking rates&#46;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a> The reduction in the number of lung transplants for AATD observed in our hospital may be due to improvements in quality of life and symptoms thanks to new treatments for COPD&#44; and particularly to greater accessibility to intravenous AAT augmentation therapy&#44; which has been shown to reduce the decline in FEV<span class="elsevierStyleInf">1</span>&#44;<a class="elsevierStyleCrossRefs" href="#bib0145"><span class="elsevierStyleSup">9&#8211;11</span></a> loss of lung density<a class="elsevierStyleCrossRefs" href="#bib0160"><span class="elsevierStyleSup">12&#44;13</span></a> and probably also the frequency of exacerbations<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">14</span></a> in these patients&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">In our series&#44; at the time of the evaluation&#44; patients receiving a transplant for COPD with or without AATD had very severe disease&#44; with a mean FEV<span class="elsevierStyleInf">1</span> of 22&#46;4&#37;&#46; Eighty-nine percent were receiving long-term home oxygen therapy for chronic respiratory failure&#44; and a tendency toward hypercapnia was observed&#44; with a mean PCO<span class="elsevierStyleInf">2</span> of 47&#46;4<span class="elsevierStyleHsp" style=""></span>mmHg&#46;</p><p id="par0095" class="elsevierStylePara elsevierViewall">On analyzing the characteristics by study period&#44; it was observed that in recent years &#40;2009&#8211;2013&#41;&#44; patients were older and arrived at the transplant evaluation with a better functional status&#44; higher FEV<span class="elsevierStyleInf">1</span>&#44; better 6MWT exercise tolerance&#44; and higher PO<span class="elsevierStyleInf">2</span>&#46; This could be because the increase in the number of transplants has made this a more widely accepted therapeutic option&#46; As a result&#44; specialists are more aware of this alternative&#44; and tend to refer patients to specialized units at an early stage of the disease&#46; Moreover&#44; the increase in demand has meant that the age limit for receiving a transplant has increased and&#44; with this&#44; the mean age of the patients&#46;</p><p id="par0100" class="elsevierStylePara elsevierViewall">On comparing the characteristics between both groups&#44; patients who received a transplant for AATD emphysema or COPD had similar characteristics at the time of the transplant evaluation&#46; The only differences were that patients with AATD had less tobacco exposure and were younger at the time of the evaluation&#44; which is to be expected given the predisposition to early emphysema associated with this disease&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">2</span></a> These differences have also been observed in patients receiving long-term home oxygen therapy&#44; as patients with AATD were also younger and had fewer comorbidities&#46;<a class="elsevierStyleCrossRef" href="#bib0175"><span class="elsevierStyleSup">15</span></a> Our data are consistent with information available in the Spanish registry of patients with AATD &#40;REDAAT&#41;&#44; which showed a mean age of 50&#46;5 years and cumulative tobacco exposure of 26&#46;7 pack-years<a class="elsevierStyleCrossRef" href="#bib0180"><span class="elsevierStyleSup">16</span></a> at the time of inclusion in the registry&#59; these data are also similar to those in the Italian register&#46;<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">17</span></a> In contrast&#44; patients with COPD without AATD had a higher PCO<span class="elsevierStyleInf">2</span>&#44; probably because patients with AATD have predominantly basal emphysema&#44; which results in less deterioration of gas exchange than apical emphysema&#46;<a class="elsevierStyleCrossRefs" href="#bib0190"><span class="elsevierStyleSup">18&#44;19</span></a></p><p id="par0105" class="elsevierStylePara elsevierViewall">Lung transplantation is considered a valid therapeutic option for patients with COPD and those with emphysema secondary to AATD&#46; According to the latest data from the International Society of Heart and Lung Transplantation &#40;ISHLT&#41; registry&#44; the median survival of patients receiving lung transplants for all causes is 5&#46;5 years&#44; or 7&#46;7 years for those who survive the first year post-transplant&#46; Patients receiving transplants for COPD and AATD have a median survival of 5&#46;4 and 6&#46;3 years&#44; respectively &#40;6&#46;8 and 8&#46;4 years for those who survive the first year&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">1</span></a> Despite this&#44; there is still little information on the progress of patients who receive a transplant for AATD&#46; In one recent series in Sweden&#44; data on 83 patients with AATD who received a transplant between 1990 and 2010 were collected from the national Swedish AATD registry and compared with a control group of 70 patients with AATD who had not received a transplant&#46; A significant survival benefit was observed in patients with PiZZ who had received a transplant&#44; compared to non-transplant patients&#46;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a></p><p id="par0110" class="elsevierStylePara elsevierViewall">In conclusion&#44; patients with AATD emphysema come to the transplant evaluation in a similarly serious condition to other COPD patients&#44; but at a younger age and with less tobacco exposure&#46; Although the number of all-cause transplants has increased gradually since 1993&#44; the number performed for AATD had fallen in our hospital&#44; probably due to improvements in specific disease management and better access to augmentation therapy&#46; In any event&#44; early diagnosis of AATD is essential to prevent pulmonary emphysema from progressing&#44; as recommended in clinical practice guidelines&#46;<a class="elsevierStyleCrossRefs" href="#bib0110"><span class="elsevierStyleSup">2&#44;20</span></a></p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Authors&#8217; Contributions</span><p id="par0115" class="elsevierStylePara elsevierViewall">Daniela Giacoboni participated in the study design&#44; data collection and preparation of the database&#46; Miriam Barrecheguren and Esther Rodr&#237;guez participated in the evaluation and follow-up of patients with alpha-1 antitrypsin deficiency and COPD&#46; Cristina Esquinas participated in the statistical analysis&#46; Cristina Berastegui&#44; Manuel L&#243;pez-Meseguer and Carlos Bravo participated in the evaluation of patients for lung transplantation&#46; Pietro Pirina participated in the study design&#46; Marc Miravitlles participated in the study design and in the evaluation and follow-up of patients with alpha-1 antitrypsin deficiency&#46; Antonio Roman participated in the study design and in the evaluation of patients for lung transplantation&#46; All the authors have read and approve the data presented and have contributed to the drafting of the manuscript&#46;</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Conflict of Interests</span><p id="par0120" class="elsevierStylePara elsevierViewall">Marc Miravitlles has received speaker&#39;s fees for educational events organized by Boehringer Ingelheim&#44; Pfizer&#44; AstraZeneca&#44; Novartis&#44; Grifols and Takeda&#44; and for scientific consultancy from Boehringer Ingelheim&#44; Pfizer&#44; GlaxoSmithKline&#44; AstraZeneca&#44; Novartis&#44; Almirall&#44; Gebro Pharma and Takeda&#46;</p><p id="par0125" class="elsevierStylePara elsevierViewall">Daniela Giacoboni of the Institute of Respiratory Diseases&#44; Sassari University &#40;Italy&#41; is the recipient of an unrestricted Erasmus Placement fellowship grant in Hospital Vall d&#8217;Hebron&#44; Barcelona &#40;Spain&#41;&#46; <span class="elsevierStyleGrantSponsor" id="gs1">Laboratorios Grifols</span> funds the Catalan Center for Excellence in Alpha-1 antitrypsin&#46;</p></span></span>"
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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Introduction</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">COPD and emphysema due to alpha-1 antitrypsin deficiency &#40;AATD&#41; are the first and fourth indications for lung transplantation worldwide&#44; respectively&#46; Despite this&#44; there is little information regarding the health status of these patients at the time of transplantation&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Patients who received a lung transplant in the Hospital Vall d&#8217;Hebron between July 1993 and August 2013 were identified and data from the evaluation prior to the transplant were collected&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">A total of 217 patients who received a lung transplant for COPD and 19 in whom the indication was AATD were included&#46; These patients were severely impaired at the time of the evaluation for lung transplantation&#44; although the trend in recent years has been to evaluate patients at earlier stages of the disease&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Baseline characteristics were similar in both groups except that patients with AATD were younger &#91;43 &#40;7&#46;7&#41; <span class="elsevierStyleItalic">vs</span> 53&#46;6 &#40;6&#46;1&#41; years old&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#93;&#44; with less exposure to tobacco &#91;23&#46;9 &#40;15&#41; <span class="elsevierStyleItalic">vs</span> 50 &#40;29&#41; packs-year&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;002&#93; and lower PCO<span class="elsevierStyleInf">2</span> &#91;41&#46;7 &#40;7&#46;6&#41; <span class="elsevierStyleItalic">vs</span> 47&#46;9 &#40;9&#46;7&#41; mmHg&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;004&#93;&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conclusions</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">The number of patients receiving a lung transplant for COPD has progressively increased and the tendency is to perform the evaluation in earlier stages of the disease&#46; Patients receiving transplants for COPD and AATD had similar characteristics at the time of the evaluation&#44; although AATD patients were younger and had less exposure to tobacco and lower PCO<span class="elsevierStyleInf">2</span>&#46;</p></span>"
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        "resumen" => "<span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Introducci&#243;n</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">La EPOC y el enfisema secundario a d&#233;ficit de alfa-1 antitripsina &#40;DAAT&#41; son la primera y la cuarta causa de trasplante pulmonar en el mundo&#44; respectivamente&#44; a pesar de lo cual disponemos de poca informaci&#243;n sobre la situaci&#243;n en la que estos pacientes llegan al trasplante&#46;</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">M&#233;todos</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Se identific&#243; a los pacientes trasplantados por EPOC y por enfisema secundario a DAAT en el Hospital Vall d&#8217;Hebron entre julio de 1993 y agosto de 2013 y se recogieron datos de la evaluaci&#243;n previa al trasplante&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Resultados</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Se incluy&#243; a un total de 217 pacientes trasplantados por EPOC y 19 por enfisema secundario a DAAT&#46; Los pacientes evaluados para trasplante por estas enfermedades presentaban una afectaci&#243;n grave de su enfermedad aunque en los &#250;ltimos a&#241;os se observ&#243; una tendencia a realizar la evaluaci&#243;n en estadios m&#225;s precoces&#46; Ambos grupos presentaban caracter&#237;sticas similares&#44; excepto que los pacientes con DAAT eran m&#225;s j&#243;venes &#40;43 &#91;7&#44;7&#93; <span class="elsevierStyleItalic">vs&#46;</span> 53&#44;6 &#91;6&#44;1&#93; a&#241;os&#59; p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#44;001&#41;&#44; con un menor consumo de tabaco &#40;23&#44;9 &#91;15&#93; <span class="elsevierStyleItalic">vs&#46;</span> 50 &#91;29&#93; paquetes&#47;a&#241;o&#59; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;002&#41; y menor PCO<span class="elsevierStyleInf">2</span> &#40;41&#44;7 &#91;7&#44;6&#93; <span class="elsevierStyleItalic">vs&#46;</span> 47&#44;9 &#91;9&#44;7&#93; mmHg&#44; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;004&#41;&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Conclusiones</span><p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">El n&#250;mero de pacientes trasplantados por EPOC ha aumentado progresivamente&#44; observ&#225;ndose una tendencia a realizar la evaluaci&#243;n de trasplante en estadios m&#225;s tempranos de la enfermedad&#46; Los pacientes evaluados para trasplante por EPOC y por enfisema secundario a DAAT presentan caracter&#237;sticas similares&#44; aunque estos &#250;ltimos eran m&#225;s j&#243;venes&#44; ten&#237;an un menor consumo de tabaco y menor PCO<span class="elsevierStyleInf">2</span>&#46;</p></span>"
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            "identificador" => "abst0040"
            "titulo" => "Conclusiones"
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    "NotaPie" => array:1 [
      0 => array:2 [
        "etiqueta" => "&#9734;"
        "nota" => "<p class="elsevierStyleNotepara" id="npar0015">Please cite this article as&#58; Giacoboni D&#44; Barrecheguren M&#44; Esquinas C&#44; Rodr&#237;guez E&#44; Berastegui C&#44; L&#243;pez-Meseguer M&#44; et al&#46; Caracter&#237;sticas de la poblaci&#243;n candidata a trasplante pulmonar por enfermedad pulmonar obstructiva cr&#243;nica y por enfisema secundario a d&#233;ficit de alfa 1 antitripsina&#46; Arch Bronconeumol&#46; 2015&#59;51&#58;379&#8211;383&#46;</p>"
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        "tipo" => "MULTIMEDIAFIGURA"
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          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Number of COPD lung transplant recipients per year &#40;July 1993&#8211;August 2013&#41;&#46;</p>"
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        "etiqueta" => "Fig&#46; 2"
        "tipo" => "MULTIMEDIAFIGURA"
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          "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Error bars for the clinical variables according to the transplant period&#58; &#40;a&#41; PO<span class="elsevierStyleInf">2</span> values&#59; &#40;b&#41; FEV1&#37; values&#59; &#40;c&#41; 6-minute walk test values&#46;</p>"
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          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Values in bold are statistically significant&#46;</p>"
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Variables&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Period1993&#8211;2002No&#46;&#61;80&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Period2003&#8211;2008No&#46;&#61;77&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Period2009&#8211;2013No&#46;&#61;79&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">P</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Age &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50&#46;9 &#40;7&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54&#46;2 &#40;6&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54&#46;3 &#40;5&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Sex &#40;male&#41;&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">73 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">61 &#40;80&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54 &#40;68&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Smoker &#40;former smoker&#41;&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">73 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">75 &#40;98&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">76 &#40;96&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;189&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Tobacco exposure &#40;pack-years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">43&#46;5 &#40;27&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50&#46;3 &#40;32&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50&#46;4 &#40;29&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;252&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FEV1 &#40;l&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;67 &#40;0&#46;24&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;69 &#40;0&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;81 &#40;0&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;038</span><a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FEV1 &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">20&#46;0 &#40;6&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">21&#46;7 &#40;7&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">25&#46;4 &#40;10&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#60;<span class="elsevierStyleBold">&#46;001</span><a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FVC &#40;l&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;64 &#40;0&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;69 &#40;0&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;9 &#40;0&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;157<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FVC &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">40&#46;8 &#40;13&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">39&#46;9 &#40;13&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">44&#46;3 &#40;12&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;097&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Walk test &#40;m&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">212&#46;8 &#40;83&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">244&#46;0 &#40;82&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">240&#46;2 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;05</span><a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">PaCO<span class="elsevierStyleInf">2</span> &#40;mmHg&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48&#46;0 &#40;10&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48&#46;0 &#40;9&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">46&#46;0 &#40;8&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;338&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">PO<span class="elsevierStyleInf">2</span> &#40;mmHg&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">56&#46;6 &#40;11&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">60&#46;7 &#40;10&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">62&#46;9 &#40;10&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Home oxygen&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">67 &#40;83&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">63 &#40;84&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">74 &#40;93&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;105&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
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          "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Clinical Characteristics of the Patients Evaluated for Transplant According to Period&#46;</p>"
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          "leyenda" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">Values in bold are statistically significant&#46;</p>"
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">AATD patientsNo&#46;&#61;19Mean &#40;SD&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">COPD patientsNo&#46;&#61;217Mean &#40;SD&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">P</span><a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Age &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48&#46;1 &#40;7&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">53&#46;6 &#40;6&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;002</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Sex &#40;male&#41;&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">17 &#40;89&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">172 &#40;79&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;380&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Tobacco exposure &#40;&#37;&#41; &#40;current smokers&#43;former smokers&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">18 &#40;94&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
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Original Article
Characteristics of Candidates for Lung Transplantation Due to Chronic Obstructive Pulmonary Disease and Alpha-1 Antitrypsin Deficiency Emphysema
Características de la población candidata a trasplante pulmonar por enfermedad pulmonar obstructiva crónica y por enfisema secundario a déficit de alfa 1 antitripsina
Daniela Giacobonia, Miriam Barrechegurenb, Cristina Esquinasb, Esther Rodríguezb, Cristina Berasteguib, Manuel López-Meseguerb, Víctor Monforteb, Carlos Bravob, Pietro Pirinaa, Marc Miravitllesb,
Corresponding author
mmiravitlles@vhebron.net

Corresponding author.
, Antonio Románb
a Servicio de Neumología, Universidad de Sassari, Sassari, Italy
b Servicio de Neumología, Hospital Universitario Vall d’Hebron, CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">A total of 37<span class="elsevierStyleHsp" style=""></span>581 lung transplants were carried out worldwide between January 1995 and June 2012&#44; 12<span class="elsevierStyleHsp" style=""></span>602 &#40;33&#46;5&#37;&#41; of which were due to chronic obstructive pulmonary disease &#40;COPD&#41;&#44; the most common reason for lung transplant&#44; followed by idiopathic pulmonary fibrosis and cystic fibrosis&#46; The COPD group does not include patients undergoing transplant for emphysema secondary to alpha-1 antitrypsin deficiency &#40;AATD&#41;&#44; which itself is the fourth indication for lung transplant&#44; with 2182 transplants conducted during this period&#44; accounting for 5&#46;8&#37; of the total&#46;<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">AATD is a genetic disease that is associated with low levels of alpha-1 antitrypsin &#40;AAT&#41; in blood and tissues&#44; and predisposes the individual to lung and liver disease&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">2</span></a> AATD emphysema is the most common potentially fatal congenital disease in adulthood&#44; and is also the most common cause of morbidity and mortality in patients with severe AATD&#46; Up to one third of patients have significant disability at a young age due to the respiratory disease&#44; and survival of these patients is lower than that of the general population&#46;<a class="elsevierStyleCrossRef" href="#bib0115"><span class="elsevierStyleSup">3</span></a> It is usually detected in advanced stages of the disease&#44; so it is highly underdiagnosed&#46;<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">4</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">Medical treatment of patients with AATD emphysema should include pharmacological and non-pharmacological measures common to COPD patients&#46; Moreover&#44; purified AAT from donor plasma for intravenous administration has been available since 1987&#46; The aim is to raise AAT levels in plasma and lung interstitium to prevent destruction of the parenchyma&#44; and arrest the progression of emphysema in selected patients&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">2</span></a></p><p id="par0020" class="elsevierStylePara elsevierViewall">Patients with COPD with or without AATD who present with significant functional deterioration may benefit from lung transplantation&#44; primarily to improve survival&#44; although there is little information on transplantation for AATD&#46;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a> The aim of this study was to describe the characteristics of patients with AATD emphysema on their arrival for lung transplantation compared to those of patients who received a transplant for COPD&#46; We also describe any changes observed in the clinical characteristics of patients evaluated for transplantation from the start of the lung transplant program to the present day&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Methods</span><p id="par0025" class="elsevierStylePara elsevierViewall">A cross-sectional observational study was conducted in patients evaluated for lung transplantation for COPD with and without AATD in Hospital Universitari Vall d&#8217;Hebron &#40;Barcelona&#44; Spain&#41; between July 1993 and August 2013&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">The study was carried out according to the principles of the Declaration of Helsinki and current regulations for conducting research studies in human subjects&#46; Patient confidentiality was maintained at all times&#44; in compliance with Spanish law 15&#47;1999 on Data Protection&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">The following data were collected at the time of the transplant evaluation&#58; medical history&#44; sociodemographic and clinical data&#44; and the findings of lung function tests&#44; arterial blood gases and 6-minute walk test &#40;6-MWT&#41;&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">Lung function tests were carried out using the MasterLab system &#40;MasterLab&#44; Jaegger&#44; Germany&#41;&#44; following the recommendations of the Spanish Society of Pulmonology and Thoracic Surgery &#40;SEPAR&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">6</span></a> The 6-MWT&#44; standardized according to international recommendations&#44; was used to evaluate exercise capacity&#46;<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">7</span></a></p><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Statistical Analysis</span><p id="par0045" class="elsevierStylePara elsevierViewall">Before analysis&#44; quality control was carried out to identify anomalous data in each variable&#46; Frequency and valid percent were determined in the case of the qualitative variables&#46; Central tendency &#40;mean&#44; median&#41;&#44; position &#40;quartiles&#41; and dispersion measures &#40;standard deviation and interquartile range &#91;IQR&#93;&#41; were calculated for the quantitative variables&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">In the case of qualitative variables&#44; patient characteristics were compared according to the year of transplant or group &#40;COPD with or without AATD&#41; using the Chi-squared test or Fisher&#39;s test &#40;if the observed frequency was &#60;5&#41;&#46; In the case of ordinal variables&#44; the linear trend was determined using Kendall&#39;s Tau-c coefficient&#46; Quantitative variables were compared using the Student&#39;s <span class="elsevierStyleItalic">t</span>-test &#40;&#60;2 categories&#41; and analysis of variance &#40;ANOVA&#41; &#40;in the case of variables &#62;2 categories&#41;&#44; linear trend test and multiple comparisons test &#40;Scheff&#233;&#41;&#46; Analysis was performed using the SPSS 19&#46;0 statistics package &#40;Chicago&#44; IL&#44; USA&#41;&#46; A significant difference was determined for all tests based on a <span class="elsevierStyleItalic">P</span> value &#60;&#46;05&#46;</p></span></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Results</span><p id="par0055" class="elsevierStylePara elsevierViewall">A total of 695 lung transplants were performed in Hospital Vall d&#8217;Hebron from1993 to 2013&#46; Of these&#44; 31&#46;2&#37; &#40;n&#61;217&#41; were carried out in patients with COPD and 8&#37; &#40;n&#61;19&#41; in patients with AATD emphysema&#46; Patients with AATD had homozygous PiZZ phenotype in 18 cases&#44; and 1 was homozygous for the rare PiY<span class="elsevierStyleInf">barcelona</span><a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">8</span></a> variant&#46;</p><p id="par0060" class="elsevierStylePara elsevierViewall">Patients included in the study had a mean age of 53&#46;1 &#40;SD&#58; 6&#46;6&#41; years at the time of the lung transplant evaluation&#44; and 80&#37; &#40;n&#61;189&#41; were men&#46; As regard smoking&#44; 95&#46;3&#37; of patients were former smokers and 2&#46;1&#37; were current smokers&#59; mean cumulative tobacco exposure was 48 pack-years &#40;SD&#58; 29&#41;&#46; Mean FEV<span class="elsevierStyleInf">1</span> &#40;&#37;&#41; was 22&#46;3&#37; &#40;SD&#58; 8&#46;8&#37;&#41;&#46; Arterial blood gases showed PO<span class="elsevierStyleInf">2</span> 60<span class="elsevierStyleHsp" style=""></span>mmHg &#40;SD&#58; 10&#46;8&#41; and PaCO<span class="elsevierStyleInf">2</span> 47&#46;4<span class="elsevierStyleHsp" style=""></span>mmHg &#40;SD&#58; 9&#46;7&#41;&#46; The mean distance walked in the 6-MWT was 231&#46;4<span class="elsevierStyleHsp" style=""></span>m &#40;SD&#58; 86&#46;6&#41;&#46; A total of 87&#46;2&#37; of patients were on long-term home oxygen therapy&#46;</p><p id="par0065" class="elsevierStylePara elsevierViewall">A trend toward an annual increase in the number of lung transplants for COPD was observed&#44; with a higher frequency in 2008&#44; 2010 and 2012 &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0070" class="elsevierStylePara elsevierViewall">To measure trends over time in patients referred for lung transplantation&#44; the study was divided into 3 periods&#46; Patients evaluated for transplantation in the last period &#40;2009&#8211;2013&#41; were older &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41;&#44; with a lower percentage of men &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41;&#44; with less FEV<span class="elsevierStyleInf">1</span> decline &#40;<span class="elsevierStyleItalic">L</span> and &#37;&#41; &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;038 and <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#44; respectively&#41;&#44; better exercise tolerance measured using the 6MWT &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;050&#41; and higher PO<span class="elsevierStyleInf">2</span> &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41; &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0075" class="elsevierStylePara elsevierViewall">On comparing the characteristics of patients with AATD emphysema and COPD&#44; the only differences observed were that patients with AATD were younger on average &#40;43 &#91;7&#46;7&#93; <span class="elsevierStyleItalic">vs</span> 53&#46;6 &#91;6&#46;1&#93; years&#59; <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#41;&#44; had less tobacco exposure &#40;23&#46;9 &#91;15&#93; <span class="elsevierStyleItalic">vs</span> 50 &#91;29&#93; pack-years&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;002&#41; and lower PCO<span class="elsevierStyleInf">2</span> &#40;41&#46;7 &#91;7&#46;6&#93; <span class="elsevierStyleItalic">vs</span> 47&#46;9 &#91;9&#46;7&#93; mmHg&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;004&#41; &#40;<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Discussion</span><p id="par0080" class="elsevierStylePara elsevierViewall">The results of this study show that the number of transplants performed for COPD increased in parallel with the number of total transplants&#46; Patients with COPD had very severe disease at the time of their transplant evaluation&#44; although the current trend is to evaluate patients at earlier stages&#46; Patients receiving transplants for COPD or AATD emphysema had similar characteristics at the time of the evaluation&#44; except that the latter were younger&#44; with less cumulative tobacco exposure&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">This study found that the number of transplants performed for COPD in our hospital echoes the increase observed in other countries&#44; reaching a peak in 2010&#8211;2012&#46; However&#44; the number of transplants carried out for AATD has declined since the start of the transplant program&#44; and accounts for only 2&#37; of the total&#46; In other countries&#44; the number of transplants performed for this reason have remained stable&#44; with rates varying from 6&#37; worldwide to 9&#37; in Sweden&#44;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a> even though the number of new diagnoses of AATD emphysema has fallen in Sweden&#44; probably due to the significant drop in smoking rates&#46;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a> The reduction in the number of lung transplants for AATD observed in our hospital may be due to improvements in quality of life and symptoms thanks to new treatments for COPD&#44; and particularly to greater accessibility to intravenous AAT augmentation therapy&#44; which has been shown to reduce the decline in FEV<span class="elsevierStyleInf">1</span>&#44;<a class="elsevierStyleCrossRefs" href="#bib0145"><span class="elsevierStyleSup">9&#8211;11</span></a> loss of lung density<a class="elsevierStyleCrossRefs" href="#bib0160"><span class="elsevierStyleSup">12&#44;13</span></a> and probably also the frequency of exacerbations<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">14</span></a> in these patients&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">In our series&#44; at the time of the evaluation&#44; patients receiving a transplant for COPD with or without AATD had very severe disease&#44; with a mean FEV<span class="elsevierStyleInf">1</span> of 22&#46;4&#37;&#46; Eighty-nine percent were receiving long-term home oxygen therapy for chronic respiratory failure&#44; and a tendency toward hypercapnia was observed&#44; with a mean PCO<span class="elsevierStyleInf">2</span> of 47&#46;4<span class="elsevierStyleHsp" style=""></span>mmHg&#46;</p><p id="par0095" class="elsevierStylePara elsevierViewall">On analyzing the characteristics by study period&#44; it was observed that in recent years &#40;2009&#8211;2013&#41;&#44; patients were older and arrived at the transplant evaluation with a better functional status&#44; higher FEV<span class="elsevierStyleInf">1</span>&#44; better 6MWT exercise tolerance&#44; and higher PO<span class="elsevierStyleInf">2</span>&#46; This could be because the increase in the number of transplants has made this a more widely accepted therapeutic option&#46; As a result&#44; specialists are more aware of this alternative&#44; and tend to refer patients to specialized units at an early stage of the disease&#46; Moreover&#44; the increase in demand has meant that the age limit for receiving a transplant has increased and&#44; with this&#44; the mean age of the patients&#46;</p><p id="par0100" class="elsevierStylePara elsevierViewall">On comparing the characteristics between both groups&#44; patients who received a transplant for AATD emphysema or COPD had similar characteristics at the time of the transplant evaluation&#46; The only differences were that patients with AATD had less tobacco exposure and were younger at the time of the evaluation&#44; which is to be expected given the predisposition to early emphysema associated with this disease&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">2</span></a> These differences have also been observed in patients receiving long-term home oxygen therapy&#44; as patients with AATD were also younger and had fewer comorbidities&#46;<a class="elsevierStyleCrossRef" href="#bib0175"><span class="elsevierStyleSup">15</span></a> Our data are consistent with information available in the Spanish registry of patients with AATD &#40;REDAAT&#41;&#44; which showed a mean age of 50&#46;5 years and cumulative tobacco exposure of 26&#46;7 pack-years<a class="elsevierStyleCrossRef" href="#bib0180"><span class="elsevierStyleSup">16</span></a> at the time of inclusion in the registry&#59; these data are also similar to those in the Italian register&#46;<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">17</span></a> In contrast&#44; patients with COPD without AATD had a higher PCO<span class="elsevierStyleInf">2</span>&#44; probably because patients with AATD have predominantly basal emphysema&#44; which results in less deterioration of gas exchange than apical emphysema&#46;<a class="elsevierStyleCrossRefs" href="#bib0190"><span class="elsevierStyleSup">18&#44;19</span></a></p><p id="par0105" class="elsevierStylePara elsevierViewall">Lung transplantation is considered a valid therapeutic option for patients with COPD and those with emphysema secondary to AATD&#46; According to the latest data from the International Society of Heart and Lung Transplantation &#40;ISHLT&#41; registry&#44; the median survival of patients receiving lung transplants for all causes is 5&#46;5 years&#44; or 7&#46;7 years for those who survive the first year post-transplant&#46; Patients receiving transplants for COPD and AATD have a median survival of 5&#46;4 and 6&#46;3 years&#44; respectively &#40;6&#46;8 and 8&#46;4 years for those who survive the first year&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">1</span></a> Despite this&#44; there is still little information on the progress of patients who receive a transplant for AATD&#46; In one recent series in Sweden&#44; data on 83 patients with AATD who received a transplant between 1990 and 2010 were collected from the national Swedish AATD registry and compared with a control group of 70 patients with AATD who had not received a transplant&#46; A significant survival benefit was observed in patients with PiZZ who had received a transplant&#44; compared to non-transplant patients&#46;<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">5</span></a></p><p id="par0110" class="elsevierStylePara elsevierViewall">In conclusion&#44; patients with AATD emphysema come to the transplant evaluation in a similarly serious condition to other COPD patients&#44; but at a younger age and with less tobacco exposure&#46; Although the number of all-cause transplants has increased gradually since 1993&#44; the number performed for AATD had fallen in our hospital&#44; probably due to improvements in specific disease management and better access to augmentation therapy&#46; In any event&#44; early diagnosis of AATD is essential to prevent pulmonary emphysema from progressing&#44; as recommended in clinical practice guidelines&#46;<a class="elsevierStyleCrossRefs" href="#bib0110"><span class="elsevierStyleSup">2&#44;20</span></a></p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Authors&#8217; Contributions</span><p id="par0115" class="elsevierStylePara elsevierViewall">Daniela Giacoboni participated in the study design&#44; data collection and preparation of the database&#46; Miriam Barrecheguren and Esther Rodr&#237;guez participated in the evaluation and follow-up of patients with alpha-1 antitrypsin deficiency and COPD&#46; Cristina Esquinas participated in the statistical analysis&#46; Cristina Berastegui&#44; Manuel L&#243;pez-Meseguer and Carlos Bravo participated in the evaluation of patients for lung transplantation&#46; Pietro Pirina participated in the study design&#46; Marc Miravitlles participated in the study design and in the evaluation and follow-up of patients with alpha-1 antitrypsin deficiency&#46; Antonio Roman participated in the study design and in the evaluation of patients for lung transplantation&#46; All the authors have read and approve the data presented and have contributed to the drafting of the manuscript&#46;</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Conflict of Interests</span><p id="par0120" class="elsevierStylePara elsevierViewall">Marc Miravitlles has received speaker&#39;s fees for educational events organized by Boehringer Ingelheim&#44; Pfizer&#44; AstraZeneca&#44; Novartis&#44; Grifols and Takeda&#44; and for scientific consultancy from Boehringer Ingelheim&#44; Pfizer&#44; GlaxoSmithKline&#44; AstraZeneca&#44; Novartis&#44; Almirall&#44; Gebro Pharma and Takeda&#46;</p><p id="par0125" class="elsevierStylePara elsevierViewall">Daniela Giacoboni of the Institute of Respiratory Diseases&#44; Sassari University &#40;Italy&#41; is the recipient of an unrestricted Erasmus Placement fellowship grant in Hospital Vall d&#8217;Hebron&#44; Barcelona &#40;Spain&#41;&#46; <span class="elsevierStyleGrantSponsor" id="gs1">Laboratorios Grifols</span> funds the Catalan Center for Excellence in Alpha-1 antitrypsin&#46;</p></span></span>"
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    "pdfFichero" => "main.pdf"
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    "fechaRecibido" => "2014-06-20"
    "fechaAceptado" => "2014-08-05"
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          "clase" => "keyword"
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            0 => "COPD"
            1 => "Alpha-1 antitrypsin deficiency"
            2 => "Lung transplantation"
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        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Palabras clave"
          "identificador" => "xpalclavsec597171"
          "palabras" => array:3 [
            0 => "EPOC"
            1 => "D&#233;ficit de alfa-1 antitripsina"
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    "resumen" => array:2 [
      "en" => array:3 [
        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Introduction</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">COPD and emphysema due to alpha-1 antitrypsin deficiency &#40;AATD&#41; are the first and fourth indications for lung transplantation worldwide&#44; respectively&#46; Despite this&#44; there is little information regarding the health status of these patients at the time of transplantation&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Patients who received a lung transplant in the Hospital Vall d&#8217;Hebron between July 1993 and August 2013 were identified and data from the evaluation prior to the transplant were collected&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">A total of 217 patients who received a lung transplant for COPD and 19 in whom the indication was AATD were included&#46; These patients were severely impaired at the time of the evaluation for lung transplantation&#44; although the trend in recent years has been to evaluate patients at earlier stages of the disease&#46;</p><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Baseline characteristics were similar in both groups except that patients with AATD were younger &#91;43 &#40;7&#46;7&#41; <span class="elsevierStyleItalic">vs</span> 53&#46;6 &#40;6&#46;1&#41; years old&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#93;&#44; with less exposure to tobacco &#91;23&#46;9 &#40;15&#41; <span class="elsevierStyleItalic">vs</span> 50 &#40;29&#41; packs-year&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;002&#93; and lower PCO<span class="elsevierStyleInf">2</span> &#91;41&#46;7 &#40;7&#46;6&#41; <span class="elsevierStyleItalic">vs</span> 47&#46;9 &#40;9&#46;7&#41; mmHg&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;004&#93;&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conclusions</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">The number of patients receiving a lung transplant for COPD has progressively increased and the tendency is to perform the evaluation in earlier stages of the disease&#46; Patients receiving transplants for COPD and AATD had similar characteristics at the time of the evaluation&#44; although AATD patients were younger and had less exposure to tobacco and lower PCO<span class="elsevierStyleInf">2</span>&#46;</p></span>"
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            "identificador" => "abst0005"
            "titulo" => "Introduction"
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          1 => array:2 [
            "identificador" => "abst0010"
            "titulo" => "Methods"
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          2 => array:2 [
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            "titulo" => "Results"
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        "resumen" => "<span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Introducci&#243;n</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">La EPOC y el enfisema secundario a d&#233;ficit de alfa-1 antitripsina &#40;DAAT&#41; son la primera y la cuarta causa de trasplante pulmonar en el mundo&#44; respectivamente&#44; a pesar de lo cual disponemos de poca informaci&#243;n sobre la situaci&#243;n en la que estos pacientes llegan al trasplante&#46;</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">M&#233;todos</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Se identific&#243; a los pacientes trasplantados por EPOC y por enfisema secundario a DAAT en el Hospital Vall d&#8217;Hebron entre julio de 1993 y agosto de 2013 y se recogieron datos de la evaluaci&#243;n previa al trasplante&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Resultados</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Se incluy&#243; a un total de 217 pacientes trasplantados por EPOC y 19 por enfisema secundario a DAAT&#46; Los pacientes evaluados para trasplante por estas enfermedades presentaban una afectaci&#243;n grave de su enfermedad aunque en los &#250;ltimos a&#241;os se observ&#243; una tendencia a realizar la evaluaci&#243;n en estadios m&#225;s precoces&#46; Ambos grupos presentaban caracter&#237;sticas similares&#44; excepto que los pacientes con DAAT eran m&#225;s j&#243;venes &#40;43 &#91;7&#44;7&#93; <span class="elsevierStyleItalic">vs&#46;</span> 53&#44;6 &#91;6&#44;1&#93; a&#241;os&#59; p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#44;001&#41;&#44; con un menor consumo de tabaco &#40;23&#44;9 &#91;15&#93; <span class="elsevierStyleItalic">vs&#46;</span> 50 &#91;29&#93; paquetes&#47;a&#241;o&#59; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;002&#41; y menor PCO<span class="elsevierStyleInf">2</span> &#40;41&#44;7 &#91;7&#44;6&#93; <span class="elsevierStyleItalic">vs&#46;</span> 47&#44;9 &#91;9&#44;7&#93; mmHg&#44; p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;004&#41;&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Conclusiones</span><p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">El n&#250;mero de pacientes trasplantados por EPOC ha aumentado progresivamente&#44; observ&#225;ndose una tendencia a realizar la evaluaci&#243;n de trasplante en estadios m&#225;s tempranos de la enfermedad&#46; Los pacientes evaluados para trasplante por EPOC y por enfisema secundario a DAAT presentan caracter&#237;sticas similares&#44; aunque estos &#250;ltimos eran m&#225;s j&#243;venes&#44; ten&#237;an un menor consumo de tabaco y menor PCO<span class="elsevierStyleInf">2</span>&#46;</p></span>"
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        "nota" => "<p class="elsevierStyleNotepara" id="npar0015">Please cite this article as&#58; Giacoboni D&#44; Barrecheguren M&#44; Esquinas C&#44; Rodr&#237;guez E&#44; Berastegui C&#44; L&#243;pez-Meseguer M&#44; et al&#46; Caracter&#237;sticas de la poblaci&#243;n candidata a trasplante pulmonar por enfermedad pulmonar obstructiva cr&#243;nica y por enfisema secundario a d&#233;ficit de alfa 1 antitripsina&#46; Arch Bronconeumol&#46; 2015&#59;51&#58;379&#8211;383&#46;</p>"
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          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Number of COPD lung transplant recipients per year &#40;July 1993&#8211;August 2013&#41;&#46;</p>"
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          "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Error bars for the clinical variables according to the transplant period&#58; &#40;a&#41; PO<span class="elsevierStyleInf">2</span> values&#59; &#40;b&#41; FEV1&#37; values&#59; &#40;c&#41; 6-minute walk test values&#46;</p>"
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          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Values in bold are statistically significant&#46;</p>"
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                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Variables&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Period1993&#8211;2002No&#46;&#61;80&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Period2003&#8211;2008No&#46;&#61;77&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Period2009&#8211;2013No&#46;&#61;79&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">P</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Age &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50&#46;9 &#40;7&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54&#46;2 &#40;6&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54&#46;3 &#40;5&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Sex &#40;male&#41;&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">73 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">61 &#40;80&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">54 &#40;68&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Smoker &#40;former smoker&#41;&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">73 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">75 &#40;98&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">76 &#40;96&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;189&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Tobacco exposure &#40;pack-years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">43&#46;5 &#40;27&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50&#46;3 &#40;32&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50&#46;4 &#40;29&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;252&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FEV1 &#40;l&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;67 &#40;0&#46;24&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;69 &#40;0&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;81 &#40;0&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;038</span><a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FEV1 &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">20&#46;0 &#40;6&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">21&#46;7 &#40;7&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">25&#46;4 &#40;10&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#60;<span class="elsevierStyleBold">&#46;001</span><a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FVC &#40;l&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;64 &#40;0&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;69 &#40;0&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;9 &#40;0&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;157<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FVC &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">40&#46;8 &#40;13&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">39&#46;9 &#40;13&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">44&#46;3 &#40;12&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;097&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Walk test &#40;m&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">212&#46;8 &#40;83&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">244&#46;0 &#40;82&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">240&#46;2 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;05</span><a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">PaCO<span class="elsevierStyleInf">2</span> &#40;mmHg&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48&#46;0 &#40;10&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48&#46;0 &#40;9&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">46&#46;0 &#40;8&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;338&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">PO<span class="elsevierStyleInf">2</span> &#40;mmHg&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">56&#46;6 &#40;11&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">60&#46;7 &#40;10&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">62&#46;9 &#40;10&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Home oxygen&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">67 &#40;83&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">63 &#40;84&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">74 &#40;93&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;105&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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          "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Clinical Characteristics of the Patients Evaluated for Transplant According to Period&#46;</p>"
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          "leyenda" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">Values in bold are statistically significant&#46;</p>"
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                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">AATD patientsNo&#46;&#61;19Mean &#40;SD&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">COPD patientsNo&#46;&#61;217Mean &#40;SD&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">P</span><a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Age &#40;years&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">48&#46;1 &#40;7&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">53&#46;6 &#40;6&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;002</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Sex &#40;male&#41;&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">17 &#40;89&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">172 &#40;79&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;380&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Tobacco exposure &#40;&#37;&#41; &#40;current smokers&#43;former smokers&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">18 &#40;94&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">212 &#40;97&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;208&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Pack-years&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">23&#46;9 &#40;15&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">50 &#40;28&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#60;<span class="elsevierStyleBold">&#46;001</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FEV1 &#40;l&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;689 &#40;0&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">0&#46;734 &#40;0&#46;4&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;687&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FEV1 &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">20&#46;2 &#40;5&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">22&#46;5 &#40;8&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;305&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FVC &#40;l&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;962 &#40;0&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1&#46;734 &#40;0&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;170&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">FVC &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">44&#46;4 &#40;12&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">41&#46;5 &#40;13&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;356&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">6-min walk test &#40;m&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">199&#46;2 &#40;91&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">234&#46;4 &#40;85&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;114&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">PO<span class="elsevierStyleInf">2</span> &#40;mmHg&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">59&#46;4 &#40;6&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">60&#46;1 &#40;11&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;788&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">PaCO<span class="elsevierStyleInf">2</span> &#40;mmHg&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">41&#46;7 &#40;7&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">47&#46;9 &#40;89&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top"><span class="elsevierStyleBold">&#46;004</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Oxygen therapy&#59; n &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">17 &#40;89&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">188 &#40;87&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">&#46;999&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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            0 => array:3 [
              "identificador" => "tblfn0010"
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              "nota" => "<p class="elsevierStyleNotepara" id="npar0010">Mann&#8211;Whitney <span class="elsevierStyleItalic">U</span> test or Chi-squared test&#46;</p>"
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Demographic and Clinical Characteristics of Patients Evaluated for Transplant by Group&#46;</p>"
        ]
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    ]
    "bibliografia" => array:2 [
      "titulo" => "References"
      "seccion" => array:1 [
        0 => array:2 [
          "identificador" => "bibs0005"
          "bibliografiaReferencia" => array:20 [
            0 => array:3 [
              "identificador" => "bib0105"
              "etiqueta" => "1"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "The Registry of the International Society for Heart and Lung Transplantation&#58; 29th adult lung and heart-lung transplant report &#8211; 2012"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "J&#46;D&#46; Christie"
                            1 => "L&#46;B&#46; Edwards"
                            2 => "A&#46;Y&#46; Kucheryavaya"
                            3 => "C&#46; Benden"
                            4 => "A&#46;I&#46; Dipchand"
                            5 => "F&#46; Dobbels"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.healun.2012.08.004"
                      "Revista" => array:6 [
                        "tituloSerie" => "J Heart Lung Transplant"
                        "fecha" => "2012"
                        "volumen" => "31"
                        "paginaInicial" => "1073"
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Article information
ISSN: 15792129
Original language: English
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