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为了了解冠状动脉阻塞程度和侧枝循环与其所供应的左室心肌之间的关系,在心内直视手术时对这些区域进行了电生理学和组织病理学检查。方法:48例因心绞痛至少伴有一支冠状动脉主支明显阻塞(>75％)而进行傍路手术和/或室壁瘤切除术的患者。术中在心肺机转流前或后即刻,作心外膜心电图检查,并从由阻塞冠状动脉所供应的心肌区采取全层心肌活检标本,进行组织病理学检查。患者均作了左心室和冠状动脉造影。结果:(1)冠状动脉阻塞程度:①和组
To understand the extent of coronary artery occlusion and the relationship between collateral circulation and the LV myocardium supplied to them, electrophysiological and histopathological examinations of these areas were performed during open heart surgery. METHODS: Forty-eight patients undergoing parapharyngeal surgery and / or aneurysm resection due to angina pectoris with at least one overt obstruction of coronary arteries (> 75%) were included. Before or after cardiopulmonary bypass, ECG was performed on the epicardium and a full-thickness myocardial biopsy specimen was taken from the myocardium area supplied by the occluded coronary artery for histopathological examination. All patients underwent left ventricular and coronary angiography. Results: (1) Coronary occlusion: ① and group