Comparative study on the effects of small dose of aspirin combined with Ginkgo-damole injection and the effects of conventional dose of aspirin in treating senile unstable angina pectoris

Objective: To evaluate the therapeutic and adverse effect of small dose of aspirin (Asp) (UA). Methods: One hundred and twenty old in-patients of coronary heart disease with UA were randomly divided into two groups. The 60 patients in the treated group were treated with oral administration of enteric soluble 50 mg Asp once a day and GDI 20 ml per day by intravenous dripping, with 14 days as one therapeutic course, while the other 60 in the control group were treated with enteric soluble Asp 100 mg alone once a day orally. Besides, isosorbide-5-mononitrate 20 mg twice a day was applied to both groups, and the β-adrenoceptor blocker, blood lipids regulatory agents and nitroglycerin (10 mg by intravenous dripping) were given accordingly. The angina total improving rate, hemorrheologic indexes (whole blood viscosity, plasma viscosity, fibrinogen, platelet aggregation rate), comprehensive clinical terminal event and the total occurrence rate of adverse reaction in the two groups were observed. Results: After treatment, comparison between the two groups showed insignificant difference in aspects of angina total improving rate (75.00% vs 65.00 % ), hemorrheological indexes and comprehensive clinical terminal event rate (25.00 % vs 31. 67 % ),P＞0.05, and the hemorrheological indexes were improved in both groups ( P＜0.05), but the total occurrence rate of adverse reaction in the treated group was lower than that in the control group (6. 67% vs 25.00%), showing significant difference (P＜0.05). Conclusion: In treatment of senile UA, small dose of Asp combined with GDI showed therapeutic effect similar to that of conventional dose of Asp, but it has lower adverse reaction.