低剂量螺旋CT冠状动脉钙化积分对不稳定型心绞痛患者冠状动脉病变及预后的预测价值Low-dose helical CT coronary calcification score has predictive value for the severity of coronary artery and prognosis in patients with unstable angina pectoris
王春燕,李建辉,范芳芳,王鹤
摘要(Abstract):
目的 旨在探讨低剂量螺旋CT(LDCT)冠状动脉钙化积分对不稳定型心绞痛患者冠状动脉粥样硬化病变情况及预后的预测价值。方法 回顾性分析2020年7月1日至9月30日于北京大学第一医院接受LDCT并行冠状动脉造影的不稳定型心绞痛患者132例。记录其临床特征、LDCT冠状动脉钙化积分和冠状动脉造影结果。对上述患者进行随访,记录主要不良心血管事件发生情况。通过单因素和多因素分析以确定LDCT冠状动脉钙化积分与冠状动脉疾病之间的关系。结果 (1)LDCT冠状动脉钙化积分在不同冠状动脉粥样硬化组中的差异有统计学意义(P=0.001)。LDCT冠状动脉钙化积分与冠状动脉造影是否为三支病变有关,积分每增加100分,三支病变可能性增加12%(95%CI1.04~1.20,P=0.003),中度钙化组(积分≥100分,<400分)和重度钙化组(积分≥400分)三支病变的可能性分别是轻度钙化组(积分<100分)的3.69倍(95%CI 1.27~10.76,P=0.017)和5.48倍(95%CI 1.87~16.02,P=0.002),趋势检验P=0.002。(2)当LDCT冠状动脉钙化积分≥196.05分时,预示着冠状动脉三支病变的可能性更大。LDCT冠状动脉钙化积分≥196.05分对诊断冠状动脉三支病变的敏感度为0.72,特异度为0.65,准确度为0.67,曲线下面积(AUC)为0.699。(3)随访期间,重度钙化组患者冠状动脉血运重建的可能性是其他患者的8.23倍(95%CI 1.12~60.67,P=0.039)。结论 LDCT可对不稳定型心绞痛患者的冠状动脉情况,尤其是严重冠状动脉粥样硬化病变进行预测,并且与预后相关。
关键词(KeyWords): 低剂量螺旋CT;冠状动脉钙化积分;冠状动脉造影;冠状动脉三支病变;预后
基金项目(Foundation): 北京大学医学部教育教学研究课题项目(2024YB23)
作者(Author): 王春燕,李建辉,范芳芳,王鹤
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