[An orienting stress test following acute myocardial infarct in the elderly].

In a prospective study of 150 patients with definite myocardial infarction (WHO) risk group assignment in the acute phase was done based on lactate dehydrogenase isoenzyme monitoring. 28% of the patients were older than 60 years. The informative functional exercise test was performed by the end of the hospital phase according to three risk groups at different times. Low risk on the 14th day, medium risk on the 21st day, and patients at highest risk on the 28th day after the infarction at the earliest. In connection there this test lactate was determined. In older patients, upper age limit 75 years, any severe complications did not occur during exercise. High-risk patients were objectified by the lactate dynamism, and the decision was made on the further individual outpatient design of physical conditioning by means of low level exercise training.