[Disorders of cardiac rhythm in patients with ischemic heart disease and spontaneous stenocardia].

In 22 patients with spontaneous angina pectoris, diagnostic value of 24-hour ECG monitoring for cardiac rhythm disturbances registration was compared to that of cold test (CT) and hyperventilation test (HVT). Ventricular extrasystoles or paroxysmal tachycardia during anginal attack (either spontaneous or induced) was registered in 40.9% of patients. 24-hour ECG monitoring proved to be the most valuable method for determination of the anginal attack character and connected with it's rhythm disturbances. Combination with CT and HVT increases occurrence of angiospastic angina pectoris and cardiac rhythm disturbances determination during myocardial ischemia. Repeated HVT in 14 patients using calcium antagonists (diltiazem, nifedipine) induced no coronary spasm.