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为评价急性下壁心肌梗塞(AIMI)时心前导联ST段压低的意义,对43例心电图示透壁急性心肌梗塞患者进行了研究。其中,31例有心前导联ST段压低(甲组),12例无心前导联ST段压低(乙组),两组临床表现无差异。研究结果表明,甲组患者血清酶平均峰值显著升高且左室衰竭的发生率升高;甲组室性心律紊乱、心肌再梗塞、心源性休克和房室传导阻滞的发生率亦显著高于乙组(P>0.01～0.05)。本研究资料提示,AIMI时心前导联ST段压低可能与广泛性心肌缺血和危重并发症的发生率高有关,从而认为,可将之用来预测AIMI的临床严重程度,治疗效果和预后。
To evaluate the significance of ST-segment depression in the anterior inferior leads in acute inferior myocardial infarction (AIMI), 43 patients with transmural acute myocardial infarction were studied. Among them, there were 31 cases with ST-segment depression (group A) and 12 cases without cardiac lead (ST-segment depression). There was no difference in clinical manifestations between the two groups. The results showed that the average peak serum enzyme in group A patients significantly increased and the incidence of left ventricular failure increased; a group of ventricular arrhythmias, myocardial infarction, cardiogenic shock and atrioventricular block incidence was also significant Higher than Group B (P> 0.01 ~ 0.05). Our data suggest that ST-segment depression of the lead in the heart at AIMI may be associated with a high prevalence of extensive myocardial ischemia and critical complications, suggesting that it may be used to predict the clinical severity, outcome, and prognosis of AIMI.