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为了测定侧支循环与冠状动脉病变及左心室功能的关系,对66例心绞痛或心肌梗塞患者,行冠状动脉和左心室造影。侧支循环发生率在冠状动脉完全阻塞和多支冠状动脉病变患者明显增高。冠状动脉完全阻塞伴侧支循环形成患者的左心室射血分数和局部室壁运动明显高于冠状动脉完全阻塞无侧支形成患者。本文提示侧支循环形成与冠状动脉病变的阻塞程度及慢性心肌缺血有关。其对冠状动脉阻塞远端区的供血可保护心肌收缩功能。
In order to determine the relationship between collateral circulation and coronary artery disease and left ventricular function, coronary angiography and left ventricular angiography were performed on 66 patients with angina or myocardial infarction. The incidence of collateral circulation in patients with complete occlusion of the coronary artery and multiple coronary lesions was significantly higher. Left ventricular ejection fraction and local wall motion were significantly higher in patients with complete occlusion of the coronary artery and collateral circulation than in patients with complete occlusion of the coronary artery without collateralization. This article suggests that the formation of collateral circulation and the extent of obstruction of coronary artery disease and chronic myocardial ischemia. Its supply of distal coronary artery obstruction can protect myocardial contractile function.