Early post-myocardial infarction exercise testing in subjects 70 years or more of age. Functional and prognostic evaluation.
A subjective maximal exercise test was performed in 62 patients, 70 years of age or more, in the third week after an acute myocardial infarction. Forty-two percent of the surviving AMI population in this age group could be tested. The estimated aerobic work capacity of the patients was on the average about 3 mets. Their maximal heart rate was about 70-80% below the normal age predicted maximum. A low increase of the pressure-rate product from rest to maximal exercise and occurrence of major exercise associated ventricular arrhythmias identified a high-risk group of 32 patients with probability of 4.5 year survival of 0.250 vs 0.767 in the remaining patients (P less than 10(-5)).
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D001794:Blood Pressure; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000401:mortality; D005082:Physical Exertion; D011379:Prognosis; D012306:Risk; D013997:Time Factors