[Characteristics of the clinical picture of ischemic heart disease complicated by sick sinus syndrome and problems of the prognosis of syncopal states].

Combined investigation of 86 coronary patients, including 18 patients with the sick-sinus syndrome, demonstrated the clinical pattern of the disease. The contribution of atrial systole to cardiac output was assessed in patients with sick-sinus syndrome. A basic rule is proposed for the prediction of syncopal states associated with the sick-sinus syndrome in coronary patients, its accuracy reaching 94.6%.