[Ambulatory coronary angiography. Organization--patient safety--economic benefits].

916 (63%) of 1,452 coronary angiographies performed at the University Hospital in Trondheim from 1988 to 1990 were done policlinically. The study shows that coronary angiography can be carried out safely on an outpatient basis, and that more than 50% of all patients admitted for a coronary angiography can be examined in this way.

The antithrombotic effect of heparin in deep venous thrombosis: relation to four heparin assays.

In a prospective study, 280 patients with phlebographically proven deep venous thrombosis received intravenous heparin infusion; 224 of the patients were subjected to control phlebography after 5-8 days of treatment. Females above 70 years showed least phlebographic improvement despite similar heparin dosage and heparin activity. Heparin activity in daily drawn blood samples was determined by four different assays.