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将 70例首次发生下壁心肌梗塞 (下壁 AMI)的患者分为两组。 A组为 14例合并左前分支传导阻滞 ( LAH)者 ,B组为 56例单纯下壁 AMI者。比较两组患者住院期间心脏事件 (梗塞后心绞痛、再梗塞、充血性心力衰竭、心源性休克及死亡 )的发生率及出院前左室射血分数 ( LVEF)、室性心律失常( VA)发生率。结果显示 ,A组住院期间心脏事件发生率 ( 64.3% )明显高于 B组 ( 19.6% ) ,P<0 .0 1;出院前 LVEF[( 4 5.7± 12 .8) % ]明显低于 B组 [( 57.2± 9.6) % ],P<0 .0 1;VA发生率 ( 64.3% )明显高于B组 ( 2 5.0 % ) ,P<0 .0 5。提示下壁 AMI发生 L AH者近期预后不良 ,可能存在冠脉左前降支狭窄及多支病变
Seventy patients with first-time inferior myocardial infarction (AMI) were divided into two groups. A group of 14 patients with left anterior branch block (LAH), B group of 56 patients with simple inferior wall AMI. The incidence of cardiac events (post-infarction angina pectoris, reinfarction, congestive heart failure, cardiogenic shock and death) and pre-discharge left ventricular ejection fraction (LVEF), ventricular arrhythmia (VA) Occurrence rate. The results showed that the incidence of cardiac events during hospitalization in group A (64.3%) was significantly higher than that in group B (19.6%, P <0.01); LVEF [(47.7 ± 12.8%) before discharge was significantly lower than that in group B Group [(57.2 ± 9.6)%], P <0.01; the incidence of VA was significantly higher in 64.3% than in group B (5.0%), P <0.05. It is suggested that there is a short-term prognosis for the occurrence of LAM in the inferior wall AMI. There may be coronary artery left anterior descending coronary artery stenosis and multi-vessel disease