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目的探讨24 h动态心电图在无症状心肌缺血(SMI)中的诊断价值。方法对75例临床已确诊为心肌缺血的患者进行24 h动态心电图监测,并对结果进行回顾性分析。结果 75例中,有缺血性ST-T改变65例,占总数的87%,65例中共检出365阵次缺血发作,其中284阵次(78%)为SMI发作,81阵次(22%)为有症状发作,ST段压低0.1~0.4 mV。结论 24 h动态心电图明显提高了冠心病的检出率,是临床监测无症状心肌缺血的重要手段,对无症状心肌缺血的临床评估及预后评价有重要的临床意义。
Objective To investigate the diagnostic value of 24-hour Holter monitoring in asymptomatic myocardial ischemia (SMI). Methods 75 cases of clinically diagnosed patients with myocardial ischemia 24h dynamic ECG monitoring, and the results were retrospectively analyzed. Results Of 75 cases, there were 65 cases of ischemic ST-T changes, accounting for 87% of the total. Among 65 cases, 365 cases were detected ischemic attack, of which 284 (78%) were SMI attacks and 81 cases 22%) for symptomatic attack, ST segment depression 0.1 ~ 0.4 mV. Conclusions 24 h ambulatory electrocardiogram significantly improves the detection rate of coronary heart disease and is an important means of clinical monitoring of asymptomatic myocardial ischemia. It has important clinical significance for clinical evaluation and prognosis evaluation of asymptomatic myocardial ischemia.