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目的:评估CT冠状动脉造影(CTCA)在典型心绞痛患者诊断性检查中的辅助价值。方法和结果:对62例拟行诊断性检查(包括运动心电图和传统冠状动脉造影)的典型心绞痛患者(45例男性,平均年龄58.5±7.7岁)进行CTCA检查。仅纳入窦性心律且能屏气20s以上的患者。初始心律≥70次/min者服用β受体阻断剂。分别确定运动心电图、CTCA以及运动心电图后的CT检查用于检出或排除显著冠状动脉狭窄病变(管腔直径狭窄程度>50%)患者的验后似然比。患者中显著冠状动脉病变(CAD)的患病率为74%。
Objective: To evaluate the value of CT coronary angiography (CTCA) in the diagnostic tests of patients with typical angina pectoris. Methods and Results CTCA was performed in 62 patients with typical angina (45 males, mean age 58.5 ± 7.7 years) who were scheduled for diagnostic tests (including exercise ECG and conventional coronary angiography). Only patients with sinus rhythm and breath-hold over 20 seconds are included. The initial rhythm ≥ 70 beats / min were taking β-blockers. CT examinations after exercise ECG, CTCA, and exercise ECG, respectively, were performed to detect or exclude postexposure likelihood ratios in patients with significant coronary artery stenosis (lumen diameter stenosis> 50%). The prevalence of significant coronary lesions (CAD) in patients was 74%.