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有关经皮穿刺冠状动脉腔内成形术的可行性和短、中期疗效已经明确。一些作者报道患者术后在平静状态时,心肌对铊的摄取改善,运动时改善更明显,冠状动脉血流增加,心肌乳酸生成减少,临床症状改善,非侵入性左室功能参数正常化。但此新疗法对左室工作的效益尚未完全肯定,因而本文对有严重冠状动脉病变患者在成功地施行导管扩张术的前、后,采用侵入和非侵人性方法测量其左室功能,以观察术后左室功能改善的情况。方法:男性患者7例,经冠状动脉造影证实左前降支近端高度或接近完全阻塞,心绞痛程度Ⅲ～Ⅳ级,运动时 ST-T 发生可逆性改变而无心肌梗塞史。检查前一日开始停用硝酸甘油长效制剂和β-阻滞剂,在安静和平卧运动(82±17瓦)下用~99锝标记的人体白蛋白作首次通过和门电路血池扫描。然后将 Swan-Ganz 7F 双腔热敏电阻导管置入肺动脉,Millar PC 771(7F)型双端微型压力计
The feasibility and short, medium-term efficacy of percutaneous transluminal coronary angioplasty has been clear. Some authors report that the patient’s caloric intake of thallium improved after surgery, with more pronounced improvement in exercise, increased coronary blood flow, decreased myocardial lactate production, improved clinical symptoms, and normalization of noninvasive left ventricular function parameters. However, the benefits of this new therapy on left ventricular function have not yet been fully affirmed, so this article for patients with severe coronary artery disease before and after the successful catheter dilation, invasive and non-invasive methods to measure their left ventricular function to observe Postoperative left ventricular function improved. Methods: Seven male patients were confirmed by coronary angiography. The proximal or distal complete occlusion of the left anterior descending artery was confirmed. The grade of angina pectoris was grade Ⅲ ~ Ⅳ. The reversible change of ST-T during exercise was without myocardial infarction. The nitroglycerine depot and beta-blocker were discontinued on the day before the test and first passage through the gated blood circuit was scanned with 99 technetium-labeled human albumin in a quiet and supine exercise (82 ± 17 watts). The Swan-Ganz 7F dual-chamber thermistor catheter was then placed into the pulmonary artery, and a Millar PC 771 (7F) double-ended micrometer