[Clinical study on xinkening in treating asymptomatic myocardial ischemia in coronary heart disease].

31 cases of asymptomatic myocardial ischemia in coronary heart disease were studied. According to Cohn's classification system, 4 cases were totally asymptomatic (type 1), 18 cases were asymptomatic with previous myocardial infarction (type 2) and 9 cases were asymptomatic ischemia with angina (type 3). Randomized crossing self-controlled observation methods were applied. Xinkening were used in treated group, while persantin and aspirin were used in control group. The result showed that ST-segment depression were reduced in treated and control group in comparing with those obtained before treatment, difference was significant (P < 0.01). The efficacy of treated group compared with control also were significantly different (P < 0.01), the former was better. Total time of ST-segment depression showed similar result. There was no adverse effect to heart, liver, kidney and blood. No allergic reaction was found in this observation.