The Treatment of Pulmonary Embolism With Fibrinolysin

* From the Department of Medicine, Graduate Hospital, University of Pennsylvania, Philadelphia 46, Pa. † Resident in Internal Medicine, Graduate Hospital, University of Pennsylvania; Teaching and Research Fellow, American Trudeau Society. ‡ Associate Professor of Medicine, Graduate School of Medicine, University of Pennsylvania. ¶ The fibrinolysin used in this study was supplied as Actase Fibrinolysin (Human) by the Ortho Pharmaceutical Corporation, Raritan, N. J. The continued high morbidity and mortality from pulmonary embolism makes this disease a major problem in all hospitals. Studies in Englandl and in the United States2 show that