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        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle">Background and objectives</span><p class="elsevierStyleSimplePara elsevierViewall">Recent systematic reviews and meta-analyses examining long-acting &#946;<span class="elsevierStyleInf">2</span>-adrenergic agonists &#40;LABA&#41; as maintenance treatment for asthma have shown surprisingly conflicting results&#46; The aim of the present study was to determine the impact&#44; in terms of efficacy and safety&#44; of previous maintenance treatment on severe asthma exacerbations&#46;</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">We retrospectively evaluated the clinical characteristics of exacerbations experienced by 1543 patients with moderate persistent and severe persistent asthma&#46; Drug therapy was as follows&#58; a combination of inhaled LABAs and corticosteroids &#40;493 patients&#41;&#44; an inhaled corticosteroid only &#40;456 patients&#41;&#44; and no maintenance treatment &#40;594 patients&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Asthmatic patients taking LABAs did not show higher mortality&#44; longer stay in the intensive care unit&#44; longer hospital stay&#44; lower pH&#44; or worse airflow obstruction than the other 2 groups&#46; On the contrary&#44; they had a higher mean &#40;SD&#41; forced expiratory volume in 1 second at discharge &#40;54&#37; &#91;16&#37;&#93;&#41; than patients taking inhaled corticosteroids &#40;48&#37; &#91;19&#37;&#93;&#41; and patients taking no maintenance treatment &#40;48&#37; &#91;20&#37;&#93;&#41; &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;009&#41;&#46; Patients taking no maintenance treatment also had lower mean &#40;SD&#41; pH values &#40;7&#46;37 &#91;0&#46;11&#93;&#41; than patients taking LABAs &#40;7&#46;39 &#91;0&#46;09&#93;&#41; and patients taking inhaled corticosteroids &#40;7&#46;39 &#91;0&#46;08&#93;&#41; &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;002&#41;&#44; and more admissions to the intensive care unit &#40;11&#46;1&#37; vs 6&#46;5&#37; and 7&#46;7&#37;&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;002 and <span class="elsevierStyleItalic">P</span>&#61;&#46;018&#44; respectively&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">This study did not reveal higher morbidity or mortality in severe asthma exacerbations in patients with moderate persistent or severe persistent asthma who had received inhaled LABAs combined with inhaled corticosteroids&#46; On the contrary&#44; asthma patients who did not use maintenance treatment experienced more severe asthma exacerbations&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Introducci&#243;n</span><p class="elsevierStyleSimplePara elsevierViewall">Recientes revisiones sistem&#225;ticas y metaan&#225;lisis que han analizado la seguridad de los agonistas adren&#233;rgicos &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga por v&#237;a inhalada en el tratamiento de mantenimiento del asma han mostrado&#44; sorprendentemente&#44; resultados dispares&#46; El objetivo de este estudio ha sido analizar el impacto&#44; en t&#233;rminos de eficacia y seguridad&#44; del tratamiento previo de mantenimiento del asma en la exacerbaci&#243;n asm&#225;tica grave&#46;</p> <span class="elsevierStyleSectionTitle">Pacientes y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">Se han evaluado retrospectivamente las caracter&#237;sticas cl&#237;nicas de las exacerbaciones graves que presentaron 1&#46;543 pacientes con asma persistente moderada o grave&#44; de los que 493 recib&#237;an previamente un agonista adren&#233;rgico &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga m&#225;s un glucocorticoide&#44; ambos inhalados&#59; 456 recib&#237;an s&#243;lo un glucocorticoide inhalado&#44; y 594 no segu&#237;an ning&#250;n tratamiento de mantenimiento&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">El grupo que recib&#237;a un agonista adren&#233;rgico &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga inhalado no present&#243; mayores mortalidad&#44; necesidad de ingreso en la unidad de cuidados intensivos y estancia hospitalaria&#44; peor pH ni mayor obstrucci&#243;n del flujo a&#233;reo que los otros 2 grupos de pacientes&#46; Por el contrario&#44; al recibir el alta hospitalaria present&#243; un volumen espiratorio forzado en el primer segundo significativamente mejor &#40;p &#61; 0&#44;009&#41;&#58; media &#177; desviaci&#243;n est&#225;ndar del 54 &#177; 16&#37;&#44; frente al 48&#177;19 y el 48 &#177; 20&#37; de los otros 2 grupos&#46; En el grupo que no recib&#237;a tratamiento previo el pH fue significativamente peor &#40;7&#44;37 &#177; 0&#44;11&#44; frente a 7&#44;39 &#177; 0&#44;09 y 7&#44;39 &#177; 0&#44;08&#41; y hubo una mayor proporci&#243;n de pacientes que precisaron ingreso en la unidad de cuidados intensivos &#40;el 11&#44;1 frente al 6&#44;5 y el 7&#44;7&#37;&#41;&#44; en comparaci&#243;n con los otros 2 &#40;p &#61; 0&#44;002 y p &#61; 0&#44;018&#44; respectivamente&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">El presente estudio no constat&#243; una mayor morbimortalidad de la exacerbaci&#243;n asm&#225;tica grave en los pacientes con asma persistente moderada-grave que recib&#237;an previamente tratamiento con un agonista adren&#233;rgico &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga y un glucocorticoide inhalados&#46; Por el contrario&#44; quienes no segu&#237;an tratamiento de mantenimiento presentaron una exacerbaci&#243;n m&#225;s grave&#46;</p>"
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Original article
Impact of Preventive Treatment With Long-Acting β2-Adrenergic Agonists and Inhaled Corticosteroids on the Morbidity and Mortality of Severe Asthma Exacerbations in 1543 Patients
Impacto del tratamiento preventivo con agonistas adrenérgicos β2 de acción larga y glucocorticoides inhalados en la morbimortalidad de 1.543 episodios de exacerbación grave de asma
Vicente Plazaa,
Corresponding author
vplaza@santpau.cat

Corresponding author.
, Jesús Bellido-Casadoa, Gustavo J. Rodrigob, Javier Solartec, Gema Rodríguez-Trigod,e, Ricardo Sepúlvedaf, Hugo Neffeng, Miguel Perpiñáh
a Servicio de Neumología, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
b Departamento de Emergencia, Hospital Central de las Fuerzas Armadas, Montevideo. Facultad de Medicina Claeh, Punta del Este, Maldonado, Uruguay
c Unidad de Medicina Respiratoria, Hospital San Ignacio, Universidad Javeriana, Bogotá, Colombia
d Servicio de Neumología, Complejo Hospitalario Universitario, A Coruña, Spain
e Servicio de Neumología, Hospital Clínico San Carlos, Madrid, Spain
f Instituto del Tórax, Santiago, Chile
g Unidad de Medicina Respiratoria, Hospital de Niños O. Allassia, Santa Fe, Argentina
h Servicio de Neumología, Hospital Universitario La Fe, Valencia, Spain
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            "entidad" => "Servicio de Neumolog&#237;a&#44; Hospital de la Santa Creu i Sant Pau&#44; Universitat Aut&#242;noma de Barcelona&#44; Barcelona&#44; Spain"
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            "entidad" => "Departamento de Emergencia&#44; Hospital Central de las Fuerzas Armadas&#44; Montevideo&#46; Facultad de Medicina Claeh&#44; Punta del Este&#44; Maldonado&#44; Uruguay"
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            "entidad" => "Instituto del T&#243;rax&#44; Santiago&#44; Chile"
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            "entidad" => "Servicio de Neumolog&#237;a&#44; Hospital Universitario La Fe&#44; Valencia&#44; Spain"
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      "es" => array:1 [
        "titulo" => "Impacto del tratamiento preventivo con agonistas adren&#233;rgicos &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga y glucocorticoides inhalados en la morbimortalidad de 1&#46;543 episodios de exacerbaci&#243;n grave de asma"
      ]
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    "fechaRecibido" => "2009-03-05"
    "fechaAceptado" => "2009-05-10"
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        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Keywords"
          "identificador" => "xpalclavsec155510"
          "palabras" => array:7 [
            0 => "Asthma"
            1 => "Morbidity"
            2 => "Mortality"
            3 => "Severe asthma exacerbation"
            4 => "Preventive treatment of asthma"
            5 => "Inhaled corticosteroids"
            6 => "Inhaled long-acting &#946;<span class="elsevierStyleInf">2</span>-agonists"
          ]
        ]
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          "clase" => "keyword"
          "titulo" => "Palabras clave"
          "identificador" => "xpalclavsec155511"
          "palabras" => array:7 [
            0 => "Asma"
            1 => "Morbilidad"
            2 => "Mortalidad"
            3 => "Exacerbaci&#243;n grave de asma"
            4 => "Tratamiento preventivo del asma"
            5 => "Glucocorticoides inhalados"
            6 => "Agonistas adren&#233;rgicos &#946;2 de acci&#243;n larga inhalados"
          ]
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    "resumen" => array:2 [
      "en" => array:2 [
        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle">Background and objectives</span><p class="elsevierStyleSimplePara elsevierViewall">Recent systematic reviews and meta-analyses examining long-acting &#946;<span class="elsevierStyleInf">2</span>-adrenergic agonists &#40;LABA&#41; as maintenance treatment for asthma have shown surprisingly conflicting results&#46; The aim of the present study was to determine the impact&#44; in terms of efficacy and safety&#44; of previous maintenance treatment on severe asthma exacerbations&#46;</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">We retrospectively evaluated the clinical characteristics of exacerbations experienced by 1543 patients with moderate persistent and severe persistent asthma&#46; Drug therapy was as follows&#58; a combination of inhaled LABAs and corticosteroids &#40;493 patients&#41;&#44; an inhaled corticosteroid only &#40;456 patients&#41;&#44; and no maintenance treatment &#40;594 patients&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Asthmatic patients taking LABAs did not show higher mortality&#44; longer stay in the intensive care unit&#44; longer hospital stay&#44; lower pH&#44; or worse airflow obstruction than the other 2 groups&#46; On the contrary&#44; they had a higher mean &#40;SD&#41; forced expiratory volume in 1 second at discharge &#40;54&#37; &#91;16&#37;&#93;&#41; than patients taking inhaled corticosteroids &#40;48&#37; &#91;19&#37;&#93;&#41; and patients taking no maintenance treatment &#40;48&#37; &#91;20&#37;&#93;&#41; &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;009&#41;&#46; Patients taking no maintenance treatment also had lower mean &#40;SD&#41; pH values &#40;7&#46;37 &#91;0&#46;11&#93;&#41; than patients taking LABAs &#40;7&#46;39 &#91;0&#46;09&#93;&#41; and patients taking inhaled corticosteroids &#40;7&#46;39 &#91;0&#46;08&#93;&#41; &#40;<span class="elsevierStyleItalic">P</span>&#61;&#46;002&#41;&#44; and more admissions to the intensive care unit &#40;11&#46;1&#37; vs 6&#46;5&#37; and 7&#46;7&#37;&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;002 and <span class="elsevierStyleItalic">P</span>&#61;&#46;018&#44; respectively&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">This study did not reveal higher morbidity or mortality in severe asthma exacerbations in patients with moderate persistent or severe persistent asthma who had received inhaled LABAs combined with inhaled corticosteroids&#46; On the contrary&#44; asthma patients who did not use maintenance treatment experienced more severe asthma exacerbations&#46;</p>"
      ]
      "es" => array:2 [
        "titulo" => "Resumen"
        "resumen" => "<span class="elsevierStyleSectionTitle">Introducci&#243;n</span><p class="elsevierStyleSimplePara elsevierViewall">Recientes revisiones sistem&#225;ticas y metaan&#225;lisis que han analizado la seguridad de los agonistas adren&#233;rgicos &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga por v&#237;a inhalada en el tratamiento de mantenimiento del asma han mostrado&#44; sorprendentemente&#44; resultados dispares&#46; El objetivo de este estudio ha sido analizar el impacto&#44; en t&#233;rminos de eficacia y seguridad&#44; del tratamiento previo de mantenimiento del asma en la exacerbaci&#243;n asm&#225;tica grave&#46;</p> <span class="elsevierStyleSectionTitle">Pacientes y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">Se han evaluado retrospectivamente las caracter&#237;sticas cl&#237;nicas de las exacerbaciones graves que presentaron 1&#46;543 pacientes con asma persistente moderada o grave&#44; de los que 493 recib&#237;an previamente un agonista adren&#233;rgico &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga m&#225;s un glucocorticoide&#44; ambos inhalados&#59; 456 recib&#237;an s&#243;lo un glucocorticoide inhalado&#44; y 594 no segu&#237;an ning&#250;n tratamiento de mantenimiento&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">El grupo que recib&#237;a un agonista adren&#233;rgico &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga inhalado no present&#243; mayores mortalidad&#44; necesidad de ingreso en la unidad de cuidados intensivos y estancia hospitalaria&#44; peor pH ni mayor obstrucci&#243;n del flujo a&#233;reo que los otros 2 grupos de pacientes&#46; Por el contrario&#44; al recibir el alta hospitalaria present&#243; un volumen espiratorio forzado en el primer segundo significativamente mejor &#40;p &#61; 0&#44;009&#41;&#58; media &#177; desviaci&#243;n est&#225;ndar del 54 &#177; 16&#37;&#44; frente al 48&#177;19 y el 48 &#177; 20&#37; de los otros 2 grupos&#46; En el grupo que no recib&#237;a tratamiento previo el pH fue significativamente peor &#40;7&#44;37 &#177; 0&#44;11&#44; frente a 7&#44;39 &#177; 0&#44;09 y 7&#44;39 &#177; 0&#44;08&#41; y hubo una mayor proporci&#243;n de pacientes que precisaron ingreso en la unidad de cuidados intensivos &#40;el 11&#44;1 frente al 6&#44;5 y el 7&#44;7&#37;&#41;&#44; en comparaci&#243;n con los otros 2 &#40;p &#61; 0&#44;002 y p &#61; 0&#44;018&#44; respectivamente&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">El presente estudio no constat&#243; una mayor morbimortalidad de la exacerbaci&#243;n asm&#225;tica grave en los pacientes con asma persistente moderada-grave que recib&#237;an previamente tratamiento con un agonista adren&#233;rgico &#946;<span class="elsevierStyleInf">2</span> de acci&#243;n larga y un glucocorticoide inhalados&#46; Por el contrario&#44; quienes no segu&#237;an tratamiento de mantenimiento presentaron una exacerbaci&#243;n m&#225;s grave&#46;</p>"
      ]
    ]
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      "titulo" => "References"
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            0 => array:3 [
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                  "referenciaCompleta" => "Global Initiative for Asthma&#46; Global Strategy for Asthma Management and Prevention NHLBI&#47;WHO Workshop Report&#46; 2006&#46; Available from&#58; <a class="elsevierStyleInterRef" href="http://www.ginasthma.com/">http&#58;&#47;&#47;www&#46;ginasthma&#46;com</a>"
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            1 => array:3 [
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                          "autores" => array:4 [
                            0 => "S&#46;R&#46; Salpeter"
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                          "etal" => false
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                            0 => "M&#46;R&#46; Sears"
                            1 => "A&#46; Ottosson"
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                          ]
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                        "fecha" => "2009"
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                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/18768573"
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                            0 => "J&#46; Crane"
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                            0 => "N&#46; Pearce"
                            1 => "J&#46; Grainger"
                            2 => "M&#46; Atkinson"
                            3 => "J&#46; Crane"
                            4 => "C&#46; Burgess"
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