[Indications and prognosis of preventive and simultaneous operations of the abdominal cavity].

The potential risk implied in prophylactic operations is just as high as that elective interventions. Indications must be subject to stringent deliminating criteria. Required are thorough elucidation and documentation as well as comprehensive substantiation. Operations of that kind may be performed even without elaborate advance planning, if indications are urgent. Simultaneous operations are accompanied by higher risk in cases of major surgery or if one of the interventions is septic. High risk factors were recordable from combined stomach and bile duct surgery, when performed simultaneously. Morbidity amounted to 13 per cent (pulmonary embolism and pneumonia) and lethality to 15 per cent. Simultaneous operations should be performed by an experienced surgeon who should be a fast worker.