Effects of high-flow nasal cannula with oxygen on self-paced exercise performance in COPD: A randomized cross-over trial.
Medicine (Baltimore)
; 100(51): e28032, 2021 Dec 23.
Article
em En
| MEDLINE
| ID: mdl-34941043
ABSTRACT
INTRODUCTION:
Studies have demonstrated that noninvasive ventilation improves exercise intolerance in patients with chronic obstructive pulmonary disease (COPD). The role of heated humidified high-flow nasal cannula (HFNC) therapy in patients with COPD on self-paced exercise performance remains unclear. Therefore, the purpose of the present study was to determine whether HFNC-aided supplemental oxygen during a 6-minute walk test (6MWT) would change self-paced exercise performance and cardiopulmonary outcomes in patients with stable COPD.METHODS:
A single-site, cross-over trial was conducted in a pulmonary rehabilitation outpatient department. This study enrolled 30 stable COPD patients without disability. The participants with and without HFNC performed 6MWTs on 2 consecutive days. Outcomes were the distance walked in the 6MWT, physiological, and cardiopulmonary parameters.RESULTS:
Those performing HFNC-aided walking exhibited a longer walking distance than those performing unaided walking. The mean difference in meters walked between the HFNC-aided and unaided walking scenarios was 27.3â±â35.6âm (95% CI 14.4-40.5 m). The energy expenditure index was significantly lower when walking was aided by HHHNFC rather than unaided (median 1.21âbeats/m walked vs median 1.37âbeats/m walked, Pâ<â.001). However, there were no differences in transcutaneous carbon dioxide tension between HHHNFC and non-HHHNFC patients.CONCLUSION:
Walking distance and arterial oxygen saturation improved in stable COPD patients receiving HFNC with additional oxygen support. However, HFNC did not affect transcutaneous carbon dioxide tension and the self-reported dyspnea score during the walking test. The present study demonstrated the feasibility and safety of using HFNC in self-paced exercise. TRIAL REGISTRATION NCT03863821.
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Base de dados:
MEDLINE
Assunto principal:
Oxigênio
/
Doença Pulmonar Obstrutiva Crônica
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Teste de Caminhada
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Cânula
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article