虚拟组织学血管内超声在轻中度冠状动脉病变患者中的应用价值

Application value of virtual histology intravascular ultrasound in patients with mild or moderate coronary artery lesion

目的：探讨虚拟组织学血管内超声（IVUS）在冠状动脉轻中度病变患者中的应用价值。方法选取2013年7月-2014年7月在本院心脏介入中心行冠状动脉造影（CAG）术后判断为轻中度冠状动脉病变患者80例，行IVUS检查。比较CAG与IVUS测得的病变血管最窄处血管腔直径、直径狭窄率及斑块长度；比较CAG与IVUS对相同病灶不同狭窄率的诊断结果；比较IVUS与CAG对斑块长度及性状的检测结果。结果 CAG测得的病变最窄处血管腔直径大于IVUS、直径狭窄率低于IVUS、斑块长度短于IVUS，差异有统计学意义（P〈0.05）。 IVUS对狭窄率〉60%的病灶的诊断率高于CAG（P〈0.05）。 IVUS所发现的斑块数量明显多于CAG（P〈0.05）。结论 CAG低估血管内病变情况，IVUS可作为CAG的有效补充。

Objective To investigate the application value of virtual histology intravascular ultrasound （IVUS） in pa-tients with mild or moderate coronary artery lesion. Methods 80 patients with mild or moderate coronary artery lesion diagnosed by coronary angiography （CAG） were selected,all were taken with IVUS.The vascular cavity diameter,diame-ter of the stenosis rate and length of patch of the narrowest point lesion blood vessel measured by CAG and IVUS was compared;The diagnosis of different stenosis rate of the same lesions was compared;the test results of patch length and traits was compared. Results The vascular cavity diameter measured by CAG was longer than that measured by IVUS, diameter of the stenosis rate was lower than that measured by IVUS,length of patch was shorter than that measured by IVUS,the difference was significant （P〈0.05）.The diagnostic rate of lesions more than 60% measured by CAG was high-er than that measured by IVUS （P〈0.05）.IVUS found more plaques than CAG （P〈0.05）. Conclusion The CAG underes-timates the intravascular lesion of coronary artery.IVUS can be an effective complement to CAG.