Sudden cardiac death (SCD) is an integral term for several heart diseases among which SCD caused by ischemic heart disease (IHD) designated as sudden coronary death (SCD) ranks first. SCD associated with alcoholic cardiomyopathy ranks second. Risk factors and pathologic manifestations of SCD correspond to those of IHD, atherosclerosis, myocardial infarction. Cardiac arrest takes place because of fibrillation of ventricular myocardium. Factor inducing fibrillation is an advanced irreversable myocardial ischemia complicated with reperfusion. The latter promotes elimination of arrythmogenic substances from the ishemic zone leading to electric unstability of the myocardium and fatal arrythmia. Possibility of idiopathic ventricular fibrillation and its mechanisms is discussed.
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