摘要
目的:QRS时限>0.12秒伴激动延迟波(N波)是预警非ST-T抬高型心肌梗死的信号。早期明确诊断,对预防、治疗及预后均有重要的临床意义。方法:临床标准确诊冠心病42例,治疗出院后按医嘱常规治疗服药。18个月内定期复查心电图,存在永久性心肌缺血,QRS时限延长伴或不伴左、右束支阻滞并出现心室激动延迟波。结果:18个月内出现急性下壁心肌梗死11例,死亡2例(18.2%),下壁+侧壁急性心肌梗死3例,死亡2例(66.7%),下壁+广泛前壁心肌梗死5例,死亡4例(80%),侧壁+后壁3例,死亡2例(66.7%)。完全性左束支传导阻滞合并下壁+后壁急性心肌梗死4例,死亡4例(100%),恶性心率失常9例,死亡5例(55.6%)。结论:QRS间期>0.12秒并N波特征是非ST-T抬高型心肌梗死的预警信号。
Objective:QRS duration≥0.12s with activation delay wave(N wave) is the warning signal of non ST-T elevation myocardial infarction.Early diagnosis is important to prevention,treatment and prognosis.Methods:Clinical standard of 42 cases of coronary heart disease diagnosis were cured with regular medicine treatment after discharge from hospital.Electrocardiogram(ecg), periodic review of 18 month exist permanent myocardial ischemia,QRS duration extension with or without left and right bundle branch block and delay in ventricular excited wave.Results:In 11 patients with acute inferior wall myocardial infarction,2 cases of death(18.2%);3 cases of inferior wall and side wall acute myocardial infarction,2 cases of death(66.7%);5 cases of inferior wall and anterior wall myocardial infarction,4 cases of death(80%);3 cases of lateral wall and posterior wall,2 cases died(66.7%);4 cases of acute myocardial infarction wall after wall +left after the merger,4 cases of death(100%);9 cases of malignant arrhythmia,5 cases of death(55.6%).Conclusion:QRS interval≥0.12s with N wave characteristics is the warning signal of non ST-T elevation myocardial infarction.
