Exercise capability in heart failure: is cardiac output important after all?

The exercise capability of 39 patients with severe chronic heart failure was assessed in several ways and compared with measurements of cardiac output. The relation between cardiac index and exercise tolerance measured on a treadmill was poor (r=0·191, p=0·245). However, exercise tolerance measured...

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Bibliographic Details
Published in:The Lancet (British edition) 1991-03, Vol.337 (8744), p.771-773
Main Authors: Cowley, A.J., Fullwood, L.J., Muller, A.F., Stainer, K., Hampton, J.R., Skene, A.M.
Format: Article
Language:English
Subjects:
Aged
Biological and medical sciences
Cardiac output
Cardiac Output - physiology
Cardiology. Vascular system
Cardiovascular disease
Evaluation Studies as Topic
Exercise
Exercise - physiology
Exercise Test - methods
Female
Fitness equipment
Heart
Heart diseases
Heart failure
Heart Failure - physiopathology
Heart failure, cardiogenic pulmonary edema, cardiac enlargement
Humans
Male
Medical research
Medical sciences
Middle Aged
Patients
Walking
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Summary:The exercise capability of 39 patients with severe chronic heart failure was assessed in several ways and compared with measurements of cardiac output. The relation between cardiac index and exercise tolerance measured on a treadmill was poor (r=0·191, p=0·245). However, exercise tolerance measured with a series of self-paced corridor walk tests showed moderate correlations with cardiac index (r=-0·404, p=0·015 to r=-0·516, p=0·001) and customary activity assessed by step counting correlated better with cardiac index (r=0·537, p
ISSN:0140-6736
1474-547X
DOI:10.1016/0140-6736(91)91381-4