Validation of 20-meter corridor for the 6-minute walk test in men on liver transplantation waiting list.

Abstract:

BACKGROUND:Guidelines established by the American Thoracic Society recommend the use of corridors 30 m in length for the 6-minute walk test (6MWT). However, not all institutions have such long corridors, which hinders or prevents 6MWT performance and use of its benefits. OBJECTIVE:To compare the distances walked by male patients with cirrhosis on the liver transplantation waiting list, we performed 6MWT on corridors 20 and 30 m long. METHODS:This prospective study included 10 patients on the waiting list for liver transplantation. They underwent 2 walk tests: the first test in a 20 m corridor and the second in a 30 m corridor. We assessed physiologic variables (heart rate, oxygen saturation, arterial blood pressure) and the subjective sensation of dyspnea at rest at 6 and 9 minutes after each walk. Statistical analysis was performed using the Wilcoxon test. RESULTS:Data are expressed as mean ± sd. Patient age was 59 ± 10 years. The distances walked by the patients were shorter than those predicted for their age and gender (586 ± 45 m) in both tests, no significant difference was observed between the first and the second 6MWT (437 ± 101 m vs 465 ± 80 m; P=.131) or among the physiologic variables. CONCLUSION:We concluded that a 20 m corridor can be used safely and effectively as an alternative to 30 m for the 6MWT for male patients with cirrhosis on the liver transplantation waiting list.

journal_name

Transplant Proc

authors

Veloso-Guedes CA,Rosalen ST,Thobias CM,Andreotti RM,Galhardo FD,Oliveira da Silva AM,Araujo O,Boin IF

doi

10.1016/j.transproceed.2011.03.057

subject

Has Abstract

pub_date

2011-05-01 00:00:00

pages

1322-4

issue

4

eissn

0041-1345

issn

1873-2623

pii

S0041-1345(11)00572-0

journal_volume

43

pub_type

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