Document Detail

Outcomes of patients with reduced exercise capacity at time of exercise echocardiography.
MedLine Citation:
PMID:  15182089     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To characterize the prognostic implications of exercise echocardiography in patients who have reduced exercise capacity at the time of testing.
PATIENTS AND METHODS: We examined the outcomes of 941 patients at the Mayo Clinic in Rochester, Minn, between January 1, 1990, and December 31, 1995, who had reduced exercise capacity on exercise echocardiography (women, <5 metabolic equivalents; men, <7 metabolic equivalents) and evaluated the potential association between clinical, electrocardiographic, and echocardiographic variables and outcomes for patients with normal vs abnormal exercise echocardiograms. We used variables of independent prognostic value to estimate cardiac risk.
RESULTS: For patients with normal exercise echocardiograms (n=282), the rate of cardiac death or nonfatal myocardial infarction was 09% per person-year of follow-up, and previous coronary revascularization was the only predictor of the time to cardiac event. For patients with abnormal exercise echocardiograms (n=659), the cardiac event rate was 4.4%. Independent predictors of outcome were exercise left ventricular (LV) ejection fraction (risk ratio, 1.44 per 10% decrement; 95% confidence interval, 1.2-1.7; P<.001) and an increase or no change in LV end-systolic size in response to exercise (risk ratio, 2.22; 95% confidence interval, 1.2-4.1; P=.01).
CONCLUSION: Exercise echocardiographic findings have important prognostic implications for patients who have reduced exercise capacity on testing. Echocardiographic descriptors of LV systolic function and dysfunction obtained immediately after exercise can be used to stratify cardiac risk of patients who do not achieve a level of exercise ordinarily considered to be of "diagnostic" value.
Robert B McCully; Veronique L Roger; Steve R Ommen; Douglas W Mahoney; Kelli N Burger; William K Freeman; Patricia A Pellikka
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Mayo Clinic proceedings     Volume:  79     ISSN:  0025-6196     ISO Abbreviation:  Mayo Clin. Proc.     Publication Date:  2004 Jun 
Date Detail:
Created Date:  2004-06-08     Completed Date:  2004-08-09     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0405543     Medline TA:  Mayo Clin Proc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  750-7     Citation Subset:  AIM; IM    
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MeSH Terms
Echocardiography, Stress*
Exercise Tolerance*
Heart Diseases / epidemiology,  ultrasonography*

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