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目的分析急性下壁心肌梗死(acute inferior myocardial infarction,AIMI)伴有胸前导联ST段压低的冠状动脉病变特点及临床意义。方法回顾分析2006年8月~2007年8月住院的AIMI患者91例。按胸前导联ST段是否压低将患者分为4组:胸前导联ST段无压低组(n=27);胸前导联仅V1~4ST段压低组(n=26);胸前导联仅V5~6ST段压低组(n=12);广泛胸前导联ST段压低组(n=26)。结果AIMI伴有胸前导联V1~4ST段压低与冠状动脉多支病变呈负相关,ORⅢ=0.38,无统计学意义;AIMI伴有胸前导联V1~6ST段压低与冠状动脉多支病变呈正相关,ORⅣ=5.25,P<0.01,有显著统计学意义。胸前导联V1~6ST段压低组与其他组相比较,左室射血分数(LVEF)低,差异显著(P<0.05);该组前降支病变率高(73.1%),但与其他3组相比无统计学差异。结论AIMI伴有胸前导联V1~6ST段压低提示多支病变,且心功能不全发生率高。
Objective To analyze the characteristics and clinical significance of acute inferior myocardial infarction (AIMI) accompanied with coronary lesion of ST segment depression in precordial leads. Methods A retrospective analysis of 91 patients with AIMI admitted to hospital from August 2006 to August 2007 was performed. Patients were divided into 4 groups according to whether the ST segment of chest lead was depressed or not: ST-segment non-depression group (n = 27) Lead was only V5 ~ 6ST segment depression group (n = 12); extensive thoracic ST segment depression group (n = 26). Results There was a negative correlation between V1 ~ 4ST depression in AIMI and coronary artery multi-vessel disease with OR Ⅲ = 0.38, but there was no significant difference between AIMI and patients with coronary artery disease Was a positive correlation, OR ¢ ö = 5.25, P <0.01, with significant statistical significance. Compared with other groups, the left ventricular ejection fraction (LVEF) was lower (P <0.05) in patients with V1 ~ 6ST depression in the lead of the thoracic aorta. The rate of the anterior descending coronary artery was higher (73.1% No significant difference between the three groups. Conclusions AIMI accompanied with the reduction of V1 ~ 6ST lead in thoracic aorta suggests multi-vessel disease, and the incidence of cardiac dysfunction is high.