[The significance of the performance-lactate quotient in patients following acute myocardial infarct in a preliminary stress test].

According to the risk group classification on the basis of an isoenzyme monitoring n = 67 patients (of them 12 females) with acute myocardial infarction were temporarily differentiated: slight risk (n = 26) on the 14th day, medium risk (n = 16) on the 21st day and high risk (n = 25) greater than or equal to 28. By means of orientating tolerance test and measurement of the lactate concentrations examinations were performed on the day post infarction. All patients with slight risk achieved the physical performance of 375 Watt/min in slight lactate concentrations (less than 4 mmol/l).

[Submaximal stress test and lactate dynamics following acute myocardial infarct in elderly patients].

Eighty patients were physically conditioned after definite myocardial infarction (WHO definition). The percentage of patients older than 60 years was 28%. Physical conditioning as part of the non-drug therapy of acute myocardial infarction is of great importance also to older patients.

[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.