A 52-year-old male suffered from acute viral myocarditis with severe cardiogenic shock. On his admission, he underwent the inotropic and IABP supports, and subsequently was treated effectively by V-A bypass, which was continued for 35 hours. But he died in the period of 69 hours after V-A bypass from extended bowel necrosis and septic shock. The small and large intestinal mucosal necrosis, hemorrhagic hepatic necrosis and acute tubular necrosis were confirmed at necropsy. It is well known that the nonocclusive mesenteric vascular spasm is concerned strongly in their pathogenesis, after prolonged severe cardiogenic shock.