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材料和方法:82例首次急性下壁心肌梗塞住院患者,诊断根据典型的胸痛史,血清酶及心电图演变并除外其它部位梗塞、瓣膜病、慢性阻塞性肺病及肺梗塞—栓塞。在CCU至少连续监测4天。重度房室阻滞指Ⅱ度房室阻塞或完全房室阻滞。全部作放射核素心室造影。在入院2周内(9±5.2日)正常房室传导时期以99m锝标记红细胞,用门电路r照相机显像,以改进的左前斜位投照,连接一数据处理计算机以计算左室及右室的射血分数。本实验室及右室射血分数的正常平均值各为66.6±
MATERIALS AND METHODS: Eighty-two in-patients with first acute inferior myocardial infarction were diagnosed based on a history of typical chest pain, evolution of serum enzymes and electrocardiograms, and infarction, valvular disease, chronic obstructive pulmonary disease, and pulmonary infarction-embolism. The CCU is monitored for at least 4 consecutive days. Severe atrioventricular block refers to Ⅱ degree atrioventricular block or complete atrioventricular block. All radionuclide ventriculography. Erythrocytes were labeled with 99mTc at normal ventricular conduction within 2 weeks of admission (9 ± 5.2 days), visualized with a gate r camera, improved left anterior oblique projection, and a data processing computer connected to calculate left ventricular and right Room ejection fraction. The normal average of our laboratory and right ventricular ejection fraction was 66.6 ±