Original Articles
Efficacy of the 6-Minute Walk Test in Evaluating Ambulatory Oxygen Therapy
F. Morante
, R. Güell, M. Mayos
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fmorante@hsp.santpau.es
Correspondence: Dra. E. Morante. Departament de Pneumologia. Hospital de la Santa Creu I Sant Pau. Sant Antoni Maria Claret, 167. 08025 Barcelona. España
Correspondence: Dra. E. Morante. Departament de Pneumologia. Hospital de la Santa Creu I Sant Pau. Sant Antoni Maria Claret, 167. 08025 Barcelona. España
Departament de Pneumologia, Hospital de la Santa Creu i de Sant Pau, Barcelona, Spain
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Morante, R. Güell, M. Mayos" "autores" => array:3 [ 0 => array:5 [ "preGrado" => "Dra." "nombre" => "F." "apellidos" => "Morante" "email" => array:1 [ 0 => "fmorante@hsp.santpau.es" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor1" ] ] ] 1 => array:2 [ "nombre" => "R." "apellidos" => "Güell" ] 2 => array:2 [ "nombre" => "M." "apellidos" => "Mayos" ] ] "afiliaciones" => array:1 [ 0 => array:1 [ "entidad" => "Departament de Pneumologia, Hospital de la Santa Creu i de Sant Pau, Barcelona, Spain" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor1" "etiqueta" => "*" "correspondencia" => "Correspondence: Dra. E. Morante. Departament de Pneumologia. Hospital de la Santa Creu I Sant Pau. Sant Antoni Maria Claret, 167. 08025 Barcelona. España" ] ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2004-09-09" "fechaAceptado" => "2005-02-01" "PalabrasClave" => array:2 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Key Words" "identificador" => "xpalclavsec153761" "palabras" => array:4 [ 0 => "6-minute walk test" 1 => "Ambulatory pulse oximetry" 2 => "Portable liquid oxygen" 3 => "COPD" ] ] ] "es" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palabras clave" "identificador" => "xpalclavsec153762" "palabras" => array:4 [ 0 => "Prueba de los 6 minutos de marcha" 1 => "Pulsioximetría ambulatoria" 2 => "Oxígeno líquido portátil" 3 => "EPOC" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "en" => array:1 [ "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">TO compare oxyhemoglobin saturation (SpO<span class="elsevierStyleInf">2</span>) observed during the 6-minute walk test with that of pulse oximetry carried out during activities of daily living (ADLs). The efficacy of the 6-minute walk test for determining adequate oxygen flow to prevent arterial desaturation during ADLs was also analyzed.</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">We studied 37 patients diagnosed with chronic obstructive pulmonary disease (COPD)—mean (SD) forced expiratory volume in 1 second, 26% (9%) of predicted—and compared SpO<span class="elsevierStyleInf">2</span> values obtained in the 6-minute walk test with those obtained with ambulatory pulse oximetry during ADLs. Eleven of the 20 patients with exercise-induced desaturation agreed to use portable liquid oxygen and were randomized to ambulatory pulse oximetry on 2 consecutive days, both with and without the administration of oxygen. Oxygen flow was adjusted on successive 6-minute walk tests until a mean SpO<span class="elsevierStyleInf">2</span> greater than 85% was reached.</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">The mean SpO<span class="elsevierStyleInf">2</span>for all patients was 84% (7%) during the 6-minute walk test and 89% (4%) during ADLs (<span class="elsevierStyleItalic">P</span><.001). Cumulative percentages of time with SpO<span class="elsevierStyleInf">2</span> less than 90%, 88%, and 85% were higher during the 6-minute walk test than during ADLs (<span class="elsevierStyleItalic">P</span><.001). During the walk test, desaturation was detected in 27% of patients, but was not confirmed by ambulatory pulse oximetry during ADLs. In the subgroup of 11 patients using portable liquid oxygen no significant differences were found between SpO<span class="elsevierStyleInf">2</span> values recorded during the walk test and during ADLs with the appropriate oxygen flow.</p> <span class="elsevierStyleSectionTitle">Conclusion</span><p class="elsevierStyleSimplePara elsevierViewall">The 6-minute walk test is an effective method for detecting desaturation during ADLs and for establishing the oxygen flow needed to correct exercise-induced desaturation.</p>" ] "es" => array:1 [ "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Comparar la saturación de la oxihemoglobina (SpO<span class="elsevierStyleInf">2</span>) observada durante la prueba de los 6 min de marcha (P6m) con la SpO<span class="elsevierStyleInf">2</span> de la pulsioximetría ambulatoria realiza-da durante las actividades de la vida diaria (AVD). Se anali-zó también la eficacia de la P6m en determinar el flujo de oxígeno adecuado para prevenir la desaturación arterial durante las AVD.</p> <span class="elsevierStyleSectionTitle">Pacientes y métodos</span><p class="elsevierStyleSimplePara elsevierViewall">Se estudió a 37 pacientes diagnosti-cados de enfermedad pulmonar obstructiva crónica —valor medio (± desviación estándar) del volumen espiratorio forzado en el primer segundo 26 ± 9% del valor de referencia— en los que se compararon los valores de SpO<span class="elsevierStyleInf">2</span> obtenidos en la P6m y la pulsioximetría ambulatoria. De los 20 pacientes con desaturación al esfuerzo, 11 aceptaron el oxígeno líquido portátil y realizaron la pulsioximetría ambulatoria de forma aleatoriza-da en 2 días consecutivos con y sin la administración de oxígeno. El flujo de oxígeno se estableció en la P6m con pruebas su-cesivas hasta lograr una SpO<span class="elsevierStyleInf">2</span> media superior al 85%.</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">La SpO<span class="elsevierStyleInf">2</span> media en el total de pacientes fue del 84 ± 7% en la P6m y del 89 ± 4% en la pulsioximetría ambulatoria (p < 0,001). Los porcentajes de tiempo acumulado con SpO<span class="elsevierStyleInf">2</span> < del 90, del 88 y del 85% fueron superiores en la P6m (p < 0,001). Durante la P6m, en un 27% de los pacientes se detectó desaturación, que no se confirmó con la pulsioximetría ambulatoria. En el subgrupo de 11 pacientes no se obser-varon diferencias significativas entre la P6m y la pulsioximetría ambulatoria realizadas con el flujo de oxígeno ajustado.</p> <span class="elsevierStyleSectionTitle">Conclusión</span><p class="elsevierStyleSimplePara elsevierViewall">La P6m es un método eficaz para detectar la desaturación durante las AVD y establecer el flujo de oxígeno para corregir la desaturación al esfuerzo.</p>" ] ] "bibliografia" => array:2 [ "titulo" => "REFERENCES" "seccion" => array:1 [ 0 => array:1 [ "bibliografiaReferencia" => array:26 [ 0 => array:3 [ "identificador" => "bib1" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Continuous or nocturnal oxygen therapy in hypoxemic chronic obstructive lung disease (a clinical trial)" "autores" => array:1 [ 0 => array:2 [ "colaboracion" => "Nocturnal Oxygen Therapy Trial" "etal" => false ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "Ann Intern Med" "fecha" => "1980" "volumen" => "93" "paginaInicial" => "391" "paginaFinal" => "398" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/6776858" "web" => "Medline" ] ] ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib2" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Long term domiciliary oxygen therapy in chronic cor pulmonale complicating chronic bronchitis and emphysema" "autores" => array:1 [ 0 => array:2 [ "colaboracion" => "Report of the Medical Research Council Working Party" "etal" => false ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "Lancet" "fecha" => "1981" "volumen" => "1" "paginaInicial" => "681" "paginaFinal" => "685" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/2882097" "web" => "Medline" ] ] ] ] ] ] ] ] 2 => array:3 [ "identificador" => "bib3" "etiqueta" => "3" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "On behalf of the GOLD Scientific Committee. 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| Year/Month | Html | Total | |
|---|---|---|---|
| 2024 November | 4 | 2 | 6 |
| 2024 October | 33 | 23 | 56 |
| 2024 September | 31 | 9 | 40 |
| 2024 August | 42 | 36 | 78 |
| 2024 July | 29 | 24 | 53 |
| 2024 June | 29 | 28 | 57 |
| 2024 May | 40 | 31 | 71 |
| 2024 April | 17 | 22 | 39 |
| 2024 March | 18 | 14 | 32 |
| 2024 February | 21 | 25 | 46 |
| 2023 March | 0 | 1 | 1 |
| 2023 February | 20 | 21 | 41 |
| 2023 January | 20 | 29 | 49 |
| 2022 December | 19 | 29 | 48 |
| 2022 November | 15 | 28 | 43 |
| 2022 October | 26 | 33 | 59 |
| 2022 September | 15 | 26 | 41 |
| 2022 August | 18 | 37 | 55 |
| 2022 July | 22 | 35 | 57 |
| 2022 June | 14 | 29 | 43 |
| 2022 May | 30 | 33 | 63 |
| 2022 April | 27 | 25 | 52 |
| 2022 March | 23 | 27 | 50 |
| 2022 February | 18 | 30 | 48 |
| 2022 January | 15 | 34 | 49 |
| 2021 December | 22 | 44 | 66 |
| 2021 November | 17 | 47 | 64 |
| 2021 October | 20 | 47 | 67 |
| 2021 September | 16 | 51 | 67 |
| 2021 August | 9 | 22 | 31 |
| 2021 July | 13 | 31 | 44 |
| 2021 June | 10 | 32 | 42 |
| 2021 May | 16 | 25 | 41 |
| 2021 April | 27 | 60 | 87 |
| 2021 March | 19 | 29 | 48 |
| 2021 February | 15 | 23 | 38 |
| 2021 January | 9 | 14 | 23 |
| 2020 December | 15 | 12 | 27 |
| 2020 November | 9 | 13 | 22 |
| 2020 October | 11 | 5 | 16 |
| 2020 September | 8 | 7 | 15 |
| 2020 August | 14 | 11 | 25 |
| 2020 July | 10 | 19 | 29 |
| 2020 June | 10 | 6 | 16 |
| 2020 May | 18 | 19 | 37 |
| 2020 April | 11 | 14 | 25 |
| 2020 March | 11 | 17 | 28 |
| 2020 February | 15 | 14 | 29 |
| 2020 January | 15 | 21 | 36 |
| 2019 December | 12 | 29 | 41 |
| 2019 November | 9 | 28 | 37 |
| 2019 October | 15 | 14 | 29 |
| 2019 September | 29 | 20 | 49 |
| 2019 August | 11 | 13 | 24 |
| 2019 July | 11 | 21 | 32 |
| 2019 June | 6 | 11 | 17 |
| 2019 May | 11 | 24 | 35 |
| 2019 April | 13 | 65 | 78 |
| 2019 March | 13 | 17 | 30 |
| 2019 February | 8 | 14 | 22 |
| 2019 January | 6 | 19 | 25 |
| 2018 December | 10 | 17 | 27 |
| 2018 November | 8 | 17 | 25 |
| 2018 October | 18 | 15 | 33 |
| 2018 September | 13 | 13 | 26 |
| 2018 May | 7 | 0 | 7 |
| 2018 April | 6 | 6 | 12 |
| 2018 March | 3 | 3 | 6 |
| 2018 February | 8 | 11 | 19 |
| 2018 January | 3 | 7 | 10 |
| 2017 December | 5 | 10 | 15 |
| 2017 November | 2 | 11 | 13 |
| 2017 October | 3 | 15 | 18 |
| 2017 September | 3 | 11 | 14 |
| 2017 August | 4 | 27 | 31 |
| 2017 July | 3 | 4 | 7 |
| 2017 June | 5 | 31 | 36 |
| 2017 May | 5 | 13 | 18 |
| 2017 April | 3 | 8 | 11 |
| 2017 March | 2 | 8 | 10 |
| 2017 February | 0 | 6 | 6 |
| 2017 January | 3 | 10 | 13 |
| 2016 December | 10 | 10 | 20 |
| 2016 November | 16 | 12 | 28 |
| 2016 October | 22 | 10 | 32 |
| 2016 September | 23 | 13 | 36 |
| 2016 August | 14 | 3 | 17 |
| 2016 July | 14 | 4 | 18 |
| 2016 March | 2 | 0 | 2 |
| 2015 December | 2 | 0 | 2 |
| 2015 October | 231 | 1 | 232 |
| 2015 September | 273 | 12 | 285 |
| 2015 August | 247 | 14 | 261 |
| 2015 July | 274 | 17 | 291 |
| 2015 June | 219 | 9 | 228 |
| 2015 May | 220 | 23 | 243 |
| 2015 April | 214 | 20 | 234 |
| 2015 March | 260 | 15 | 275 |
| 2015 February | 226 | 4 | 230 |
| 2015 January | 179 | 13 | 192 |
| 2014 December | 226 | 9 | 235 |
| 2014 November | 255 | 17 | 272 |
| 2014 October | 344 | 20 | 364 |
| 2014 September | 256 | 8 | 264 |
| 2014 August | 305 | 21 | 326 |
| 2014 July | 267 | 10 | 277 |
| 2014 June | 280 | 8 | 288 |
| 2014 May | 301 | 13 | 314 |
| 2014 April | 243 | 7 | 250 |
| 2014 March | 226 | 15 | 241 |
| 2014 February | 205 | 8 | 213 |
| 2014 January | 197 | 9 | 206 |
| 2013 December | 105 | 7 | 112 |
| 2013 November | 88 | 10 | 98 |
| 2013 October | 89 | 9 | 98 |
| 2013 September | 81 | 17 | 98 |
| 2013 August | 81 | 7 | 88 |
| 2013 July | 78 | 31 | 109 |
| 2013 June | 53 | 8 | 61 |
| 2013 May | 58 | 6 | 64 |
| 2013 April | 63 | 8 | 71 |
| 2013 March | 9 | 2 | 11 |
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