| Using the oxygen-cost diagram in ramp-slope selection for dyspneic patients. | |
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MedLine Citation:
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PMID: 20647644 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND: Maximal incremental exercise testing should be completed within 8-12 minutes. The ramp-slope influences the exercise duration. Oxygen-cost diagram (OCD) is a scoring scale for the capability of daily activity performed and therefore can be used to estimate the ramp-slope. METHODS: The OCD-algorithm and the reported-algorithm were used prospectively in random order for selecting optimal ramp-slope: Ramp-slope(OCD)=Score(OCD)xweight in kg/40 for men and weight/50 for women and Ramp-slope(reported)=(Predicted V(O2peak)-V(O2unloaded))/100. Fifty-three dyspneic patients and 16 normal controls were enrolled to perform a ramp-pattern exercise. Fourteen patients not reaching maximum exercise levels were excluded. The exercise capacity, exercise time, and success rate of loaded exercise between 8 and 12 minutes were measured. RESULTS: Comparing the reported-algorithm to the OCD-algorithm in normal controls, the only difference was that the ramp-slope was higher in males; in patients, the ramp-slope was higher in males, the exercise time shorter and the success rate lower (8.6+/-3.3 vs. 9.4+/-2.1 min, 61.5% vs. 84.6%, both p<0.05); in obese patients, the ramp-slope was lower and the exercise time longer. CONCLUSION: OCD score can predict the ramp-slope selection for exercise testing in normal controls and dyspneic patients. This may be affected by gender and body weight when using the reported-algorithm for dyspneic patients. |
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Authors:
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Ming-Lung Chuang; Chih-Hsin Lee; I-Feng Lin |
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Publication Detail:
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Type: Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't Date: 2010-07-15 |
Journal Detail:
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Title: Internal medicine (Tokyo, Japan) Volume: 49 ISSN: 1349-7235 ISO Abbreviation: Intern. Med. Publication Date: 2010 |
Date Detail:
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Created Date: 2010-07-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9204241 Medline TA: Intern Med Country: Japan |
Other Details:
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Languages: eng Pagination: 1325-32 Citation Subset: IM |
Affiliation:
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Section one, Chung Shan Medical University Hospital, Taichung, Taiwan. yuan1007@ms36.hinet.net |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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