Objective: To evaluate the therapeutic and adverse effect of small dose of aspirin (Asp) combined with Ginkgo-damole injection (GDI) in treating senile unstable angina pectoris (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.