was read the article
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"apellidos" => "Vagheggini" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0873215911000687?idApp=UINPBA00004E" "url" => "/08732159/0000001700000006/v2_201509041318/S0873215911000687/v2_201509041318/en/main.assets" ] "asociados" => array:1 [ 0 => array:19 [ "pii" => "S087321591100119X" "issn" => "08732159" "doi" => "10.1016/j.rppneu.2011.09.002" "estado" => "S300" "fechaPublicacion" => "2011-11-01" "aid" => "56" "copyright" => "Sociedade Portuguesa de Pneumologia" "documento" => "simple-article" "crossmark" => 0 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "cor" "cita" => "Rev Port Pneumol. 2011;17:290-1" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 6423 "formatos" => array:3 [ "EPUB" => 234 "HTML" => 4941 "PDF" => 1248 ] ] "en" => array:10 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Letter to the Editor</span>" "titulo" => "Response to the letter “Ambulatory oxygen: Is the 6 minute walk test the best option?”" "tienePdf" => "en" "tieneTextoCompleto" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "290" "paginaFinal" => "291" ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Resposta à carta “Oxigenoterapia de deambulação: será o teste de 6 minutos de marcha a melhor opção?”" ] ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "T. Vieira, I. Belchior, J. Almeida, V. Hespanhol, J.C. Winck" "autores" => array:5 [ 0 => array:2 [ "nombre" => "T." "apellidos" => "Vieira" ] 1 => array:2 [ "nombre" => "I." "apellidos" => "Belchior" ] 2 => array:2 [ "nombre" => "J." "apellidos" => "Almeida" ] 3 => array:2 [ "nombre" => "V." "apellidos" => "Hespanhol" ] 4 => array:2 [ "nombre" => "J.C." "apellidos" => "Winck" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S087321591100119X?idApp=UINPBA00004E" "url" => "/08732159/0000001700000006/v2_201509041318/S087321591100119X/v2_201509041318/en/main.assets" ] ] "en" => array:12 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Letter to the Editor</span>" "titulo" => "Ambulatory oxygen: Is the six-minute walk test the best option?" "tieneTextoCompleto" => true "saludo" => "<span class="elsevierStyleItalic">Dear Editor,</span>" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "289" "paginaFinal" => "290" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "S. Diaz Lobato, S. Mayoralas Alises, J.L. García Gonzalez" "autores" => array:3 [ 0 => array:4 [ "nombre" => "S." "apellidos" => "Diaz Lobato" "email" => array:1 [ 0 => "sdiazlobato@gmail.com" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0005" ] ] ] 1 => array:2 [ "nombre" => "S." "apellidos" => "Mayoralas Alises" ] 2 => array:2 [ "nombre" => "J.L." "apellidos" => "García Gonzalez" ] ] "afiliaciones" => array:1 [ 0 => array:1 [ "entidad" => "Servicio de Neumología, Hospital Ramón y Cajal, Madrid, Spain" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Oxigenoterapia de deambulação: será o teste de 6 minutos de marcha a melhor opção?" ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">We have read with great interest the paper recently published by Vieira et al. in the <span class="elsevierStyleItalic">Portuguese Journal of Pulmonology</span> about the efficacy and patterns of ambulatory oxygen usage in a university hospital.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> To determine patterns of ambulatory oxygen (AO) use among patients with COPD and interstitial lung diseases, the authors have studied 37 consecutive adult patients on AO by liquid O(2) for more than 3 months. The acute response to O(2) was evaluated through the standardized 6-minute walk test (6MWT) and the Borg dyspnoea scale during a O(2) pre-intervention trial. In relation to the acute response to O(2) there were significant improvements in the distance walked, in resting SatO(2), in minimal SatO(2), and in percentage of desaturation, independently of the diagnosis. However, acute improvement in 6MWT parameters was not predictive of enhancement of outdoor activities with AO. AO was used for a mean of 4.1<span class="elsevierStyleHsp" style=""></span>h/day and surprisingly, patients spent fewer hours per day away from home after AO treatment. Moreover, 16% of the patients were not compliant to the prescription, and 54% mentioned side effects.</p><p id="par0010" class="elsevierStylePara elsevierViewall">The ATS Guideline for the 6MWT<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> have established that the strongest indication for the 6MWT is for measuring the response to medical interventions in patients with moderate to severe heart or lung disease, as a one-time measure of functional status of patients, and as a predictor of morbidity and mortality. The number of meters walked has been accepted as the main variable to be recorded in these situations.<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a> The paper from Vieira et al.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> highlights a number of important problems related to 6MWT that we would like to consider.</p><p id="par0015" class="elsevierStylePara elsevierViewall">First of all, it is necessary to say that in this Guideline there is no reference to the role of the 6MWT in the AO prescription. Second, it is very important to take into account that the 6MWT is not as simple as it may seem. Not every walk performed in a hospital in the presence of someone in a white coat is a walk test. In order for the test to be a valid instrument of measurement, it should strictly conform to official guidelines, for reasons of external validity. This means having a long, quiet corridor, some clearly visible objects to mark the ends of the distance to be covered, adequate safety measures, and a dedicated member of staff (a nurse or doctor) to supervise the tests. It would also require all patients under consideration for portable oxygen therapy to actually undergo 3 walk tests (4, counting the practice walk): a walk at baseline, a walk to titrate oxygen flow, and a walk to evaluate response – this last one preferably taking place on a different day from the first one.<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> In most cases, however, the only test likely to be performed is the walk to set flow. Third, if oxygen is to be prescribed for patients who are unable to take the walk test because of some contraindication (e.g., angina), the guidelines as they are written will not be followed.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a> At present, most patients are receiving AO without a prior 6MWT being performed. On the contrary, the public health authorities have established the 6MWT as a prerequisite for the prescription of portable oxygen therapy in an attempt to reduce the cost of domiciliary respiratory therapies. Finally, as the authors have shown, acute improvement in 6MWT parameters was not predictive of enhancement of outdoor activities with AO. So, what can we do?</p><p id="par0020" class="elsevierStylePara elsevierViewall">We daily see many patients who live more comfortably and with less dyspnoea on AO. We do not think probably that the 6MWT is the best tool to test the benefits of AO in our patients. Would a simple walk be enough? A 2-min walk test? Should we guarantee the use of as much oxygen as the patient can take if a chronic respiratory insufficiency<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> is present? The study by Vieira et al. is of interest for those who prescribe AO in their practice and it underscores the need for further study to identify the type of patient who will truly benefit from such therapy.</p></span>" "pdfFichero" => "main.pdf" "tienePdf" => true "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:6 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Efficacy and patterns of ambulatory oxygen usage - experience of a university hospital" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:5 [ 0 => "T. Vieira" 1 => "I. Belchior" 2 => "J. Almeida" 3 => "V. Hespanhol" 4 => "J.C. Winck" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1016/j.rppneu.2011.03.012" "Revista" => array:2 [ "tituloSerie" => "Rev Port Pneumol" "fecha" => "2011" ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib0010" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Statement: six minute walk test" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:1 [ 0 => "ATS" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1164/ajrccm.166.1.at1102" "Revista" => array:6 [ "tituloSerie" => "Am J Respir Crit Care Med" "fecha" => "2002" "volumen" => "166" "paginaInicial" => "111" "paginaFinal" => "117" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/12091180" "web" => "Medline" ] ] ] ] ] ] ] ] 2 => array:3 [ "identificador" => "bib0015" "etiqueta" => "3" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Longitudinal follow-up of six-minute walk distance after pulmonary endarterectomy" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:6 [ 0 => "M.N. 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Goldstein" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1164/rccm.200904-0493OC" "Revista" => array:3 [ "tituloSerie" => "Am J Respir Crit Care Med" "fecha" => "2011" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/19797159" "web" => "Medline" ] ] ] ] ] ] ] ] 4 => array:3 [ "identificador" => "bib0025" "etiqueta" => "5" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Walk tests in the prescription of portable oxygen therapy" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:1 [ 0 => "L. Puente-Maestu" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "Arch Bronconeumol" "fecha" => "2005" "volumen" => "41" "paginaInicial" => "591" "paginaFinal" => "592" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/16324595" "web" => "Medline" ] ] ] ] ] ] ] ] 5 => array:3 [ "identificador" => "bib0030" "etiqueta" => "6" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Ambulatory oxygen for chronic obstructive pulmonary disease" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:2 [ 0 => "F.S. Ram" 1 => "J.A. Wedzicha" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:3 [ "tituloSerie" => "Cochrane Database Syst Rev" "fecha" => "2002" "paginaInicial" => "CD000238" ] ] ] ] ] ] ] ] ] ] ] "idiomaDefecto" => "en" "url" => "/08732159/0000001700000006/v2_201509041318/S0873215911001188/v2_201509041318/en/main.assets" "Apartado" => array:4 [ "identificador" => "9594" "tipo" => "SECCION" "pt" => array:2 [ "titulo" => "Carta ao Editor" "idiomaDefecto" => true ] "idiomaDefecto" => "pt" ] "PDF" => "https://static.elsevier.es/multimedia/08732159/0000001700000006/v2_201509041318/S0873215911001188/v2_201509041318/en/main.pdf?idApp=UINPBA00004E&text.app=https://journalpulmonology.org/" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0873215911001188?idApp=UINPBA00004E" ]
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