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目的总结慢性冠状动脉闭塞病变(CTO)侧支循环形成因素。方法选择2001-2007年灵宝市第一人民医院80例无心肌梗死CTO患者,分为侧支良好组(甲组)和侧支不良组(乙组),对冠脉造影及临床特点分析。结果甲、乙组左冠脉优势分别为69.64%、23.0%(P<0.05),甲组近端病变、心绞痛病程(>3个月)明显多于乙组(P<0.01)。结论冠脉近端闭塞、左优势型、糖尿病及心绞痛病程长易建立侧支循环。
Objective To summarize the formation of collateral circulation in patients with chronic coronary artery occlusion (CTO). Methods Eighty patients with CTO without myocardial infarction in First People ’s Hospital of Lingbao City from 2001 to 2007 were selected and divided into two groups: good collateral group (group A) and poor collateral group (group B). The coronary angiography and clinical features were analyzed. Results The advantages of left coronary artery in group A and B were 69.64% and 23.0% respectively (P <0.05). The incidence of angina in group A was more than that in group B (P <0.01). Conclusion Close coronary artery occlusion, left dominant, diabetes and angina pectoris long easy to establish collateral circulation.