Results of treatment of 8146 patients with an acute disease and injury of the abdominal cavity organs, ageing from 15 to 93 years, were analyzed. Pulmonary thromboembolism (PTHE) had occurred in 47 (0.6%) of operated patients and in 93.6% of observations have lead to exitus lethalis, in spite of reanimation measures and intensive therapy conduction. In 4.3% of patients the PTHE occurrence was preceded by clinical signs of the lower extremity deep veins thrombosis. The risk factors for the PTHE occurrence were adduced, coexistence of them was established in 44.2% of observations. Basing on comparative analysis of the fatal PTHE frequency, depending on the occurrence risk degree, the escalating of the PTHE risk in conditions of urgent abdominal surgery was substantiated. The probable efficacy of Fraxiparine in the PTHE prophylaxis was established.

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