COPD Patients with Exertional Desaturation Are at a Higher Risk of Rapid Decline in Lung Function
Yonsei Medical Journal
; : 732-738, 2014.
Article
em En
| WPRIM
| ID: wpr-159379
Biblioteca responsável:
WPRO
ABSTRACT
PURPOSE: A recent study demonstrated that exertional desaturation is a predictor of rapid decline in lung function in patients with chronic obstructive pulmonary disease (COPD); however, the study was limited by its method used to detect exertional desaturation. The main purpose of this study was to explore whether exertional desaturation assessed using nadir oxygen saturation (SpO2) during the 6-minute walk test (6MWT) can predict rapid lung function decline in patients with COPD. MATERIALS AND METHODS: A retrospective analysis was performed on 57 patients with moderate to very severe COPD who underwent the 6MWT. Exertional desaturation was defined as a nadir SpO2 of or =50 mL. Patients were divided into rapid decliner (n=26) and non-rapid decliner (n=31) groups. RESULTS: A statistically significant difference in exertional desaturation was observed between rapid decliners and non-rapid decliners (17 vs. 8, p=0.003). No differences were found between the groups for age, smoking status, BODE index, and FEV1. Multivariate analysis showed that exertional desaturation was a significant independent predictor of rapid decline in patients with COPD (relative risk, 6.8; 95% CI, 1.8 to 25.4; p=0.004). CONCLUSION: This study supports that exertional desaturation is a predictor of rapid lung function decline in male patients with COPD.
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Texto completo:
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Índice:
WPRIM
Assunto principal:
Testes de Função Respiratória
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Exercício Físico
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Volume Expiratório Forçado
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Estudos Retrospectivos
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Doença Pulmonar Obstrutiva Crônica
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Hipóxia
Tipo de estudo:
Etiology_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Female
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Humans
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Male
Idioma:
En
Revista:
Yonsei Medical Journal
Ano de publicação:
2014
Tipo de documento:
Article