急性下壁心肌梗塞并发正后壁心肌梗塞心电图分析

ANALYSIS OF EKG OF ACUTE INFERIOR WALL INFARCTION ACCOMPANIED WITH ACUTE POSTERIOR WALL INFARCTION

25例急性下壁心肌梗塞并发正后壁心肌梗塞的心电图指征,以胸导联V_2S-T段下移最明显(下移0.12～0.4mV),有23例(占81.20％),伴有R_(v2)导联电压增高0.5～1.0mV者20例(占80.00％)。均有T_(v2)导联电压高耸,胸背导联V_7～V_9呈对应性S-T段升高0.05～0.2mV,且有ST-T的动态改变。

The EKG features of 25 cases of acute inferior wall infarction accompanied with acute posterior wall infarction were analysed. Besides the EKG phenomenon of acute inferior wall infarct, there was an arisen the EKG feature of posterior wall infarction: on precordial leads, S-T segments were depressed 0.12～0.4 mV in 23 cases (81.2%), Rv, were elevated 0.5～1.0 mV, R/S>1 in 20 cases (80.00%) and Tv_2 were high among all cases; on posterior thoraxic leads, S-T segments on V_7～V_9 were elevated and the dynamic changes appeared.