[Preventive treatment of thromboembolic disease in thoracic surgery (author's transl)].

The aim of the present work is twofold: 1) to find a simple method of diagnosing a genuine risk of post operative thromboembolic disease: the level of platellets and of fibrine, the cephaline-kaolin test, the thromboelastogram and the para-coagulation tests were not considered satisfactory by authors. Only the isotopic detection of venous thrombosis is able to confirm the value of a given preventive treatment; 2) to achieve an effective prevemtive treatment: the pre and post-operative heparin therapy (an adaptation of Kakkar's method) eliminates the clinical accidents, reduces the number of isotopic venous thrombosis, but might increase the incidence of hemorrage.