[The complex assessment of myocardial electrical instability in exacerbated ischemic heart disease].

Risk of sudden coronary death in patients with unstable stenocardia is studied insufficiently. 39 patients with unstable stenocardia underwent Holter's monitoring, loading tests and invasive programmed ventricular stimulation coming lately into increasingly wide use for assessment of myocardial electric stability. Programmed stimulation allowed to single out two groups of patients: with ventricular tachycardia (56.4%) and without it (43.6%). Results obtained by aforementioned methods showed no correlation which is explained by the authors as being due to different pathogenetical mechanisms initiating ventricular arrhythmias. Thus, for example, rhythm disorders emerged not infrequently in the periods of ischemia during Holter's monitoring while myocardial ischemia was not observed in all cases of programmed ventricular stimulation. That is why complex approach needs to be pursued for assessment of electric stability of myocardium in patients with advancing stenocardia.