[Causes and features of involvement of the intestine and its vessels in acute disturbance of mesenterial circulation].

A course of acute disturbance of mesenterial circulation (ADMC) in 346 patients (89% of them were over 50 years, mean age 68.4+/-3.6 years) was analyzed. Occlusive forms of ADMC occurred in 88% cases (91% of them were due to affection of intestinal arterial bed). Atherosclerosis of the aorta or/and it unpaired visceral branches was the main cause of ADMC in 96% patients. In 87.6% cases the causes of acute mesenterial ischemia were occlusive disease of intestinal vessels due to thrombosis and embolism of unpaired visceral branches of the abdominal aorta, thrombosis in porto-mesenterial bed. Circulatory disorders on the microcirculation level (non-occlusive ischemia) were among the causes in 7.5% cases.