A four-minute submaximal constant work rate exercise test to assess cardiovascular functional class in chronic heart failure

Romualdo Belardinelli, Yong Yu Zhang, Karlman Wasserman, Augusto Purcaro, Pier G. Agostoni

Research output: Contribution to journalArticle

Abstract

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 ration (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.

Original languageEnglish
Pages (from-to)1210-1214
Number of pages5
JournalThe American Journal of Cardiology
Volume81
Issue number10
DOIs
Publication statusPublished - May 15 1998

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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