SummaryShock syndrome, with rigid criteria for diagnosis, developed in 79 (17,5 %) of 450 patients with acute myocardial infarction; 45 cases concerned typical cardiogenic shock (10 %); 34 other cases concerned various clinical states : shock associated with prolonged arrhythmia (16 cases), vagal shock (12 cases), hypovolemic shock (4 cases) and vasoplegic shock (2 cases).The prognosis of cardiogenic shock is very poor, compared with other clinical types. However dopamine was successful in approximately 1 out 4 cases of severe cardiogenic shock.Hemodynamic studies were obtained in 9 patients. Hemodynamic effects of dopamine were studied in 6 cases of cardiogenic shock.