Document Detail


Speed of Ascent During Stair Climbing Identifies Operable Lung Resection Candidates.
MedLine Citation:
PMID:  22572926     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Background: Preoperative evaluation of lung resection candidates with impaired pulmonary reserves includes measurement of aerobic capacity. Stair climbing is an attractive low-cost alternative to treadmill exercise testing but it lacks standardisation. Objectives: To directly compare stair climbing and treadmill exercise testing with respect to an established cut-off value for lung resection. Methods: We subjected 56 lung resection candidates to both symptom-limited treadmill exercise testing and stair climbing to a maximum of 20 m. Both exercise tests were monitored with the same portable spiroergometer. Subjects were on average 46.6 years old, 61% were male and 54% had FEV(1)/FVC < 70%. Mean FEV(1) and DLCO(c) were 51.6 and 57.1%, respectively. Results: Mean altitude reached, exercise time, speed of ascent and peak VO(2) were 16.9 m, 74 s, 14.7 m/min and 22.4 ml/min/kg, respectively, in 54 subjects completing stair climbing. Thirty-one subjects (58%) reached 20 m without stopping. Treadmill tests were completed by 51 subjects and lasted longer (432 s; p < 0.001), but VO(2max) was not different compared to stair climbing (22.7 ml/min/kg; p = 0.673). Speed of ascent was significantly correlated to both stair climbing peak VO(2) (r = 0.63) and treadmill VO(2max) (r = 0.67). All 19 subjects (34%) who reached 20 m in 80 s or less (≥15 m/min) had a VO(2max) of ≥20 ml/min/kg. Conclusions: We found a clinically useful correlation between speed of ascent during stair climbing and VO(2max) during treadmill exercise testing. Climbing to 20 m with an average speed of ascent of ≥15 m/min accurately identified subjects qualifying for pneumonectomy according to established criteria.
Authors:
Maurizio Bernasconi; Coenraad F N Koegelenberg; Florian von Groote-Bidlingmaier; David Maree; Barend J Barnard; Andreas H Diacon; Chris T Bolliger
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-04
Journal Detail:
Title:  Respiration; international review of thoracic diseases     Volume:  -     ISSN:  1423-0356     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0137356     Medline TA:  Respiration     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 S. Karger AG, Basel.
Affiliation:
Division of Pulmonology, Department of Medicine, Tygerberg Academic Hospital, Stellenbosch University, Cape Town, South Africa.
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