Aim:To observe the effect of heparin therapy on early prognosis of high risk patients with unstable angina (UA).Methods: A total of 86 patients with UA(Braunwald score>3) were randomly divided into heparin group( n=42) and regular therapeutic group ( n=44 ).Results: The cases with the rate of angina attack≥1/d and the incidence of cardiac events of heparin group were significantly less than those of regular therapeutic group (16.7% vs 36.8% and 2.4% vs 20.5%, P<0.05 ).Conclusion: Heparin therapy can...