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本文报道在不稳定型心绞痛病人,应用左心室造影和选择性冠状动脉内注射放射性大分子聚合白蛋白的方法,观察冠状动脉旁路手术前后心肌灌注和收缩力的变化。方法:14例不稳定型心绞痛病人,心功能Ⅲ和Ⅳ级,手术时无急性心肌梗塞,手术前和术后3～6个月进行左心室造影、选择性冠状动脉造影和心肌灌注扫描、左心室舒张末期压和容量、每次心搏量和左心室壁节段活动分析。在冠状动脉造影后3～5分钟,于静止状态下缓慢注射性大分子聚合白蛋白(MAA)。手术前在冠状动脉注射1毫居里~(111)铟、右冠状动脉注射0.4毫居里~(99)锝MAA。手术后则每
This article reports the use of left ventricular angiography and selective intracoronary injection of radioactive macromolecule albumin in patients with unstable angina pectoris. The changes of myocardial perfusion and contractility before and after coronary artery bypass surgery were observed. Methods: 14 patients with unstable angina pectoris, grade Ⅲ and Ⅳ of cardiac function, no acute myocardial infarction at the time of surgery, left ventricular angiography, selective coronary angiography and myocardial perfusion scanning before operation and 3 ~ 6 months after operation. Left End-diastolic pressure and volume, stroke volume and left ventricular wall segment activity analysis. 3 to 5 minutes after coronary angiography, slow injection of macromolecule polymeric albumin (MAA) at rest. Prior to surgery, 1 millicuries of indium was injected into the coronary arteries and 0.4 millicuries of 99Ce technetium MAA was injected into the right coronary artery. Every time after surgery