[Changes in the myocardium of the atrium in sudden death due to ischemic heart disease].

Studies of the myocardium of the right and left atria in 31 cases of sudden death due to myocardial infarction of the ventricles or in the presence of extensive-focal cardiosclerosis were carried out. Histological techniques for staining with hematoxylin-eosine, trichrome after Masson and Goldman's method were used. Microscopic investigation of the heart in 14 cases revealed fresh areas of necrosis of the myocardium atria, which the authors evaluated as infarction. The involvement of the myocardium of the atria into the pathological process influenced the course and prognosis of ischemic heart disease.