Total or partial Q wave regression occurred in 55% of men following acute myocardial infarction but did not predict survival or recurrence of myocardial infarction.
Cohort (n=127)
Does Q wave regression following acute myocardial infarction predict survival or recurrence of myocardial infarction?
A substantial proportion of patients experience Q wave regression after acute myocardial infarction, which does not predict survival or recurrence, highlighting the need for additional diagnostic evidence to identify prior MI.
The predictors and effects of Q wave regression following acute Q wave myocardial infarction were examined in 1965-1982 in 127 Japanese-American men who participated in a prospective epidemiologic study of cardiovascular disease. Of these 127 men, 53 (42%) showed total regression of Q waves, 17 (13%) showed partial regression, and 57 (45%) showed no Q wave regression following acute myocardial infarction. Age at myocardial infarction and location of myocardial infarction did not predict which men would undergo Q wave regression. Q wave status after myocardial infarction (total, partial, or no regression) did not predict survival or recurrence of myocardial infarction. This study found that a substantial proportion of acute myocardial infarction cases undergo Q wave regression, indicating that clinicians and investigators alike require additional evidence to identify people with previous myocardial infarction.
Marcus et al. (Sun,) conducted a cohort in Acute Q wave myocardial infarction (n=127). Q wave regression vs. No Q wave regression was evaluated on Survival or recurrence of myocardial infarction. Total or partial Q wave regression occurred in 55% of men following acute myocardial infarction but did not predict survival or recurrence of myocardial infarction.
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