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本文参考文献观察了7例在常规12导联心电图上,仅 V_2—V_3导联 ST 段压低为起始改变的急性后侧壁心肌梗塞(MI)患者,探讨其机理及临床意义。一般情况:我们回顾性总结1985—1990年在我院住院的79例急性 MI 患者,发现7例(8.86%)急性后侧壁 MI 患者。入院时常规12导联心电图仅V_2—V_3出现 ST 段明显压低,其中男5例,女2例,年龄43—71岁,平均56岁。无1例患者先前有过 MI病史。病例选择标准:1.典型胸疼持续时间>30分钟;2.胸疼时 V_2—V_3导联出现明显 ST 段压低。测量方法:1.基线稳定;2.以 TP 段连线为基线,在 J 点后80ms 处测量 ST 段偏移程度。ST 段下降≥2mm 为明显压低。本组患者均无瓣膜性心脏病、先天性心脏
This article references 7 cases of acute posterior wall myocardial infarction (MI) in which ST segment depression of V_2-V_3 lead to initial change on conventional 12-lead electrocardiogram, and to explore its mechanism and clinical significance. General: We retrospectively reviewed 79 acute MI patients hospitalized in our hospital from 1985 to 1990 and found 7 (8.86%) patients with acute posterior wall MI. At admission, the conventional 12-lead electrocardiogram showed a marked depression of V_2-V_3 in ST-segment, including 5 males and 2 females, aged 43-71 years, with an average of 56 years. None of the patients previously had a history of MI. Case selection criteria: 1. Typical chest pain duration> 30 minutes; 2. V_2-V_3 lead chest ST segment depression significantly. Measurements: 1. Baseline stability; 2. Base on the TP segment connection, measure the ST segment offset degree at 80ms after the J point. ST segment decreased ≥ 2mm was significantly lower. This group of patients without valvular heart disease, congenital heart