EXCEEDING AND IMPORTANCE OF SYMPTOM-LIMIT ED HEART-RATE IN CORONARY EXERCISE PROGRAMS AND IN DAILY-LIFE STRESS

The exceeding of symptom-limited heart rate is regarded as increased r isk of myocardial ischemia in patients with coronary disease. To deter mine the coronary risk evaluated by exceeding of symptom-limited heart rate we examined 22 coronary patients by 24h-Holter monitoring during cardiac rehabilitation program and during daily life stress. The symp tom-limited heart rate was exceeded by 73% (16/22) in 24 hours, 32% (7 /22) manifested the 24h-maximal heart rate above the symptom-limited h eart rate during exercise programs, 27% (6/22) during daily life stres s and 14% (3/22) in both. The symptom-limited heart rate was exceeded by 64% (14/22) during the exercise program to 17 +/- 17%, just as by 6 4% (14/22) during daily life stress to 16 +/- 13%. Objective signs of ischemia during maximal heart rate above the symptom-limited heart rat e were in tendency more often during daily life stress than during the exercise program (36 resp. 14%, 8/22 resp. 3/22). Evaluated by exceed ing symptom-limited heart rate there is no significant increased risk of myocardial ischemia during rehabilitation exercise programs versus daily life stress.