[Case report on the administration of diuretics during pregnancy].

Diuretics potentiate existing hypovolaemia and hämoconcentration in patients suffering from toxemia of pregnancy. This effect also applies to the fetus. A case is presented of an intrauterine spontaneous thrombosis in the inferior vena cava and its tributaries in a fetus with resulting perinatal death during long-term diuretic therapy because of edema in the mother in the third trimester.