Vascular failure - disharmony between capacity of a vascular bed and volume of a circulating blood owing to a failure of a vascular tonus or volume circulating bloods (hypovolemia). Deficiency of venous return (filling by a blood of heart) can break, pump function of heart. In such cases there are changes mainly as a left ventricular failure of emission with the phenomena of an ischemia of a brain, heart, kidneys and other organs, at a hypovolemia - with centralization of a circulation. Development of a syndrome of intravascular coagulation is possible.