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Does the rest electrocardiogram after myocardial infarction determine the predictive value of exercise-induced ST depression? A 2 year follow-up study in a veteran population.

Abstract：

:The failure of exercise-induced ST segment depression to consistently predict prognosis in patients after myocardial infarction could be a result of population differences and the rest electrocardiogram (ECG). These hypotheses were tested by studying 198 veterans who survived a myocardial infarction, underwent a submaximal predischarge treadmill exercise test and were followed up for cardiac events for 2 years. During the 2 years, 29 deaths, 19 reinfarctions and 28 revascularization procedures were documented. The prevalence of death or reinfarction was two times higher in patients who had exercise-induced ST depression than in patients who did not. However, in the 55 patients without Q waves, the risk increased to 11 times for an abnormal ST response. These findings suggest that exercise-induced ST depression only predicts high risk in patients after myocardial infarction whose ECG at rest does not exhibit Q waves and that differences in the prevalence of rest ECG patterns are the most likely explanation for the failure of agreement among prior studies.

journal_name

J Am Coll Cardiol

journal_title

Journal of the American College of Cardiology

authors

Klein J,Froelicher VF,Detrano R,Dubach P,Yen R

doi

10.1016/0735-1097(89)90178-2

subject

Has Abstract

pub_date

1989-08-01 00:00:00

pages

305-11

issue

2

eissn

0735-1097

issn

1558-3597

pii

0735-1097(89)90178-2

journal_volume

14

pub_type

杂志文章

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