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        "titulo" => "Abstract"
        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">Nebulised drugs are very useful in COPD exacerbations&#46; The most frequently used propellant is compressed air&#44; which is commonly administered together with nasal oxygen in those patients with respiratory failure&#46; The purpose of this approach is to avoid the risks inherent in breathing high inspiratory oxygen fractions &#40;FIO<span class="elsevierStyleInf">2</span>&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Aim</span><p class="elsevierStyleSimplePara elsevierViewall">To analyze the actual FIO<span class="elsevierStyleInf">2</span> obtained with such a common method under experimental conditions&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p class="elsevierStyleSimplePara elsevierViewall">Volunteers breathed using different patterns &#40;quiet breathing&#44; panting and deep breathing&#41;&#44; through either the nose or the mouth&#44; with oxygen flows of 0 vs&#46; 4l&#47;min&#46; Then&#44; they repeated quiet breathing and panting patterns&#44; with nebulisation of saline propelled by compressed air &#40;8l&#47;min&#41; and oxygen flows of 0&#44; 2&#44; 4&#44; 6 and 8l&#47;min&#46; The F<span class="elsevierStyleInf">I</span>O<span class="elsevierStyleInf">2</span> was simultaneously determined both in retronasal &#40;RN&#41; and retropharyngeal &#40;RF&#41; areas&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">During breathing without simultaneous nebulisation and oxygen flow of 4l&#47;min&#44; FIO<span class="elsevierStyleInf">2</span> reached mean values of 0&#46;42&#8211;&#46;71 &#40;RN&#41; and 0&#46;29&#8211;&#46;38 &#40;RF&#41; for the three ventilatory patterns analyzed&#46; With nebulisations during quiet breathing&#44; mean FIO<span class="elsevierStyleInf">2</span> values were 0&#46;39 &#40;RN&#41; and 0&#46;27 &#40;RF&#41; for 2l&#47;min O<span class="elsevierStyleInf">2</span> flow&#44; 0&#46;47 &#40;RN&#41;&#44; 0&#46;34 &#40;RF&#41; for 4l&#47;min&#44; 0&#46;58 &#40;RN&#41;&#44; 0&#46;38 &#40;RF&#41; for 6l&#47;min&#44; and 0&#46;68 &#40;RN&#41; and 0&#46;50 &#40;RF&#41; for 8l&#47;min&#46; Similar results were obtained with the panting pattern&#46;</p> <span class="elsevierStyleSectionTitle">Conclusion</span><p class="elsevierStyleSimplePara elsevierViewall">The FIO<span class="elsevierStyleInf">2</span> obtained using the conventional nebulisation system &#40;propulsion with compressed air and simultaneous nasal oxygen therapy&#41; are relatively high&#44; and therefore&#44; might involve risks for COPD patients during exacerbations&#46;</p>"
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        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">Los f&#225;rmacos nebulizados son de gran utilidad en el tratamiento de las agudizaciones de la EPOC&#46; El gas propulsor m&#225;s utilizado es aire comprimido&#44; que suele combinarse con oxigenoterapia por v&#237;a nasal en pacientes con insuficiencia respiratoria&#46; Este m&#233;todo pretende evitar los riesgos inherentes a la inhalaci&#243;n de fracciones inspiratorias de ox&#237;geno &#40;FIO<span class="elsevierStyleInf">2</span>&#41; elevadas&#46;</p> <span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Analizar experimentalmente las FIO<span class="elsevierStyleInf">2</span> reales obtenidas mediante el dispositivo mencionado&#46;</p> <span class="elsevierStyleSectionTitle">M&#233;todo</span><p class="elsevierStyleSimplePara elsevierViewall">Los voluntarios respiraron con diversos patrones &#40;basal&#44; jadeo y respiraci&#243;n profunda&#41; por v&#237;as nasal u oral y a flujos de ox&#237;geno de 0&#8211;4 l&#47;min&#46; Seguidamente&#44; repitieron los patrones basal y de jadeo con nebulizaci&#243;n de suero salino impulsada por aire comprimido &#40;8 l&#47;min&#41; y flujos de ox&#237;geno nasales de 0&#44; 2&#44; 4&#44; 6 y 8 l&#47;min&#46; La FIO<span class="elsevierStyleInf">2</span> se determin&#243; en regiones retronasal &#40;RN&#41; y retrofar&#237;ngea &#40;RF&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Durante la respiraci&#243;n sin nebulizaci&#243;n simult&#225;nea y O<span class="elsevierStyleInf">2</span> a 4 l&#47;min&#44; la FIO<span class="elsevierStyleInf">2</span> alcanz&#243; valores medios de 0&#44;42&#8211;&#44;71 &#40;RN&#41; y 0&#44;29&#8211;0&#44;38 &#40;RF&#41; para los 3 patrones analizados&#46; Durante la nebulizaci&#243;n con salino y en respiraci&#243;n tranquila&#44; los valores medios de FIO<span class="elsevierStyleInf">2</span> fueron de 0&#44;39 &#40;RN&#41; y 0&#44;27 &#40;RF&#41; para O<span class="elsevierStyleInf">2</span> a 2 l&#47;min&#44; 0&#44;47 &#40;RN&#41; y 0&#44;34 &#40;RF&#41; para 4 l&#47;min&#44; 0&#44;58 &#40;RN&#41; y 0&#44;38 &#40;RF&#41; para 6 l&#47;min y 0&#44;68 &#40;RN&#41; y 0&#44;50 &#40;RF&#41; para 8 l&#47;min&#46; Cifras similares se alcanzaron con patr&#243;n de jadeo&#46;</p> <span class="elsevierStyleSectionTitle">Conclusi&#243;n</span><p class="elsevierStyleSimplePara elsevierViewall">Las FIO<span class="elsevierStyleInf">2</span> obtenidas mediante el sistema est&#225;ndar de nebulizaci&#243;n con aire comprimido y oxigenoterapia simult&#225;nea son relativamente elevadas y pudieran suponer un riesgo para los pacientes con EPOC exacerbada&#46;</p>"
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Original Article
Increased Inspiratory Oxygen Fractions (FIO2) Using a Conventional Drug Delivery Nebuliser
Fracciones inspiratorias elevadas de O2 con el uso del dispositivo convencional de nebulización de fármacos
Joaquim Geaa,b,
Corresponding author
jgea@imim.es

Corresponding author.
, Mauricio Orozco-Levia,b, Lluís Gallartc
a Servicio de Neumología, Hospital del Mar, Instituto Municipal de Investigación Médica (IMIM), Universitat Pompeu Fabra, Barcelona, Spain
b Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Bunyola, Baleares, Spain
c Servicio de Anestesia, Hospital del Mar–IMIM, Universidad Autónoma de Barcelona, Barcelona, Spain
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    "titulo" => "Increased Inspiratory Oxygen Fractions &#40;FIO<span class="elsevierStyleInf">2</span>&#41; Using a Conventional Drug Delivery Nebuliser"
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        "titulo" => "Fracciones inspiratorias elevadas de O<span class="elsevierStyleInf">2</span> con el uso del dispositivo convencional de nebulizaci&#243;n de f&#225;rmacos"
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        "titulo" => "Abstract"
        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">Nebulised drugs are very useful in COPD exacerbations&#46; The most frequently used propellant is compressed air&#44; which is commonly administered together with nasal oxygen in those patients with respiratory failure&#46; The purpose of this approach is to avoid the risks inherent in breathing high inspiratory oxygen fractions &#40;FIO<span class="elsevierStyleInf">2</span>&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Aim</span><p class="elsevierStyleSimplePara elsevierViewall">To analyze the actual FIO<span class="elsevierStyleInf">2</span> obtained with such a common method under experimental conditions&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p class="elsevierStyleSimplePara elsevierViewall">Volunteers breathed using different patterns &#40;quiet breathing&#44; panting and deep breathing&#41;&#44; through either the nose or the mouth&#44; with oxygen flows of 0 vs&#46; 4l&#47;min&#46; Then&#44; they repeated quiet breathing and panting patterns&#44; with nebulisation of saline propelled by compressed air &#40;8l&#47;min&#41; and oxygen flows of 0&#44; 2&#44; 4&#44; 6 and 8l&#47;min&#46; The F<span class="elsevierStyleInf">I</span>O<span class="elsevierStyleInf">2</span> was simultaneously determined both in retronasal &#40;RN&#41; and retropharyngeal &#40;RF&#41; areas&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">During breathing without simultaneous nebulisation and oxygen flow of 4l&#47;min&#44; FIO<span class="elsevierStyleInf">2</span> reached mean values of 0&#46;42&#8211;&#46;71 &#40;RN&#41; and 0&#46;29&#8211;&#46;38 &#40;RF&#41; for the three ventilatory patterns analyzed&#46; With nebulisations during quiet breathing&#44; mean FIO<span class="elsevierStyleInf">2</span> values were 0&#46;39 &#40;RN&#41; and 0&#46;27 &#40;RF&#41; for 2l&#47;min O<span class="elsevierStyleInf">2</span> flow&#44; 0&#46;47 &#40;RN&#41;&#44; 0&#46;34 &#40;RF&#41; for 4l&#47;min&#44; 0&#46;58 &#40;RN&#41;&#44; 0&#46;38 &#40;RF&#41; for 6l&#47;min&#44; and 0&#46;68 &#40;RN&#41; and 0&#46;50 &#40;RF&#41; for 8l&#47;min&#46; Similar results were obtained with the panting pattern&#46;</p> <span class="elsevierStyleSectionTitle">Conclusion</span><p class="elsevierStyleSimplePara elsevierViewall">The FIO<span class="elsevierStyleInf">2</span> obtained using the conventional nebulisation system &#40;propulsion with compressed air and simultaneous nasal oxygen therapy&#41; are relatively high&#44; and therefore&#44; might involve risks for COPD patients during exacerbations&#46;</p>"
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        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">Los f&#225;rmacos nebulizados son de gran utilidad en el tratamiento de las agudizaciones de la EPOC&#46; El gas propulsor m&#225;s utilizado es aire comprimido&#44; que suele combinarse con oxigenoterapia por v&#237;a nasal en pacientes con insuficiencia respiratoria&#46; Este m&#233;todo pretende evitar los riesgos inherentes a la inhalaci&#243;n de fracciones inspiratorias de ox&#237;geno &#40;FIO<span class="elsevierStyleInf">2</span>&#41; elevadas&#46;</p> <span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Analizar experimentalmente las FIO<span class="elsevierStyleInf">2</span> reales obtenidas mediante el dispositivo mencionado&#46;</p> <span class="elsevierStyleSectionTitle">M&#233;todo</span><p class="elsevierStyleSimplePara elsevierViewall">Los voluntarios respiraron con diversos patrones &#40;basal&#44; jadeo y respiraci&#243;n profunda&#41; por v&#237;as nasal u oral y a flujos de ox&#237;geno de 0&#8211;4 l&#47;min&#46; Seguidamente&#44; repitieron los patrones basal y de jadeo con nebulizaci&#243;n de suero salino impulsada por aire comprimido &#40;8 l&#47;min&#41; y flujos de ox&#237;geno nasales de 0&#44; 2&#44; 4&#44; 6 y 8 l&#47;min&#46; La FIO<span class="elsevierStyleInf">2</span> se determin&#243; en regiones retronasal &#40;RN&#41; y retrofar&#237;ngea &#40;RF&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Durante la respiraci&#243;n sin nebulizaci&#243;n simult&#225;nea y O<span class="elsevierStyleInf">2</span> a 4 l&#47;min&#44; la FIO<span class="elsevierStyleInf">2</span> alcanz&#243; valores medios de 0&#44;42&#8211;&#44;71 &#40;RN&#41; y 0&#44;29&#8211;0&#44;38 &#40;RF&#41; para los 3 patrones analizados&#46; Durante la nebulizaci&#243;n con salino y en respiraci&#243;n tranquila&#44; los valores medios de FIO<span class="elsevierStyleInf">2</span> fueron de 0&#44;39 &#40;RN&#41; y 0&#44;27 &#40;RF&#41; para O<span class="elsevierStyleInf">2</span> a 2 l&#47;min&#44; 0&#44;47 &#40;RN&#41; y 0&#44;34 &#40;RF&#41; para 4 l&#47;min&#44; 0&#44;58 &#40;RN&#41; y 0&#44;38 &#40;RF&#41; para 6 l&#47;min y 0&#44;68 &#40;RN&#41; y 0&#44;50 &#40;RF&#41; para 8 l&#47;min&#46; Cifras similares se alcanzaron con patr&#243;n de jadeo&#46;</p> <span class="elsevierStyleSectionTitle">Conclusi&#243;n</span><p class="elsevierStyleSimplePara elsevierViewall">Las FIO<span class="elsevierStyleInf">2</span> obtenidas mediante el sistema est&#225;ndar de nebulizaci&#243;n con aire comprimido y oxigenoterapia simult&#225;nea son relativamente elevadas y pudieran suponer un riesgo para los pacientes con EPOC exacerbada&#46;</p>"
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ISSN: 15792129
Original language: English
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