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目的:探讨冠心病患者无症状性心肌缺血(SMI)的临床特点及发生规律。方法:对医院住院治疗的心血管患者中行Holter监测证实有SMI的126例患者进行回顾性分析。结果:126例冠心病患者中共检出缺血性sT段改变529阵次,其中428阵次(81%)属无症状性心肌缺血,而有症状发作101阵次(19%)。SMI发作时间大多集中在06∶00~10∶00(60%);16∶00~17∶00(30%);其他时间(10%)。结论:SMI有明确的节律性及活动诱发因素,与心率正相关;Holter作为无创性检查是评价SMI的重要工具。
Objective: To investigate the clinical features and occurrence of asymptomatic myocardial ischemia (SMI) in patients with coronary heart disease. Methods: A retrospective analysis was performed on 126 hospitalized patients with cardiovascular disease who underwent Holter monitoring with SMI. Results: A total of 529 ischemic sT segments were detected in 126 patients with coronary heart disease. Among them, 428 (81%) were silent myocardial infarction and 101 were symptomatic (19%). SMI attack time mostly concentrated in the 06:00 ~ 10:00 (60%); 16:00 ~ 17:00 (30%); the other time (10%). CONCLUSIONS: SMI has definite rhythmicity and activity-inducing factors, which are positively correlated with heart rate. Holter as a non-invasive examination is an important tool for evaluating SMI.