Document Detail

A four-minute submaximal constant work rate exercise test to assess cardiovascular functional class in chronic heart failure.
MedLine Citation:
PMID:  9604949     Owner:  NLM     Status:  MEDLINE    
To develop a submaximal constant work rate exercise test able to grade cardiovascular dysfunction in patients with chronic heart failure, 80 patients and 59 control subjects performed a symptom-limited incremental exercise test and a constant work rate exercise test at a fixed work rate (50 W for 4 minutes). The time constant of VO2 at the start of constant work rate exercise and time for gas exchange ratio (respiratory exchange ratio) to equal 1 were independent predictors of cardiovascular functional class and correctly classified the functional class in 89 +/- 9% and 83 +/- 11% of patients, respectively.
R Belardinelli; Y Y Zhang; K Wasserman; A Purcaro; P G Agostoni
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  81     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-06-16     Completed Date:  1998-06-16     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1210-4     Citation Subset:  AIM; IM    
Ospedale Cardiologico G. M. Lancisi, Ancona, Italy.
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MeSH Terms
Cardiac Output, Low / diagnosis*,  metabolism,  physiopathology
Exercise Test* / methods
Middle Aged
Oxygen Consumption
Stroke Volume

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