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Rev Mal Respir. 2012 Nov;29(9):1104-10. doi: 10.1016/j.rmr.2012.08.004. Epub 2012 Sep 26.

[Determining factors of walking distance during 6-minutes walk test in COPD patients].

[Article in French]

Author information

1
Service de pneumologie, centre hospitalier universitaire Saint-Pierre, rue Haute 322, Brussels, Belgium. Marie_Bruyneel@stpierre-bru.be

Abstract

INTRODUCTION:

In stable COPD, we studied the factors determining six-minute walking distance and dyspnea at the end of the test.

METHODS:

Patients were evaluated by tests of lung function, St Georges' respiratory questionnaire (SGRQ) and 6MWT with inspiratory capacity measurements (IC) and continuous oxymetry.

RESULTS:

Eighty-two patients (mean FEV(1): 56+19% predicted) were studied. Mean 6-minute walking distance was 477+89m, (72+14% PV). Walking distance during 6MWT (m) was correlated with FEV(1), IC/TLC ratio, TLC, pre-test IC and DLco/VA. When expressed as a percent of predicted values, walking distance was correlated with FRC, pre-test IC and SGRQ activity score. End-test dyspnea was correlated with FRC, pre-test dyspnea and SGRQ activity and total scores.

CONCLUSION:

The factors determining 6-minute walking distance and end-test dyspnea are complex and include both functional and non-functional factors. In COPD, 6MWT is thus an investigation that has additional integrative value.

PMID:
23200582
DOI:
10.1016/j.rmr.2012.08.004
[Indexed for MEDLINE]

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