冠状动脉搭桥术前后内乳动脉桥及左前降支远段血流动力学改变的超声研究  

Hemodynamic changes of the left internal mammary artery and the distal left anterior descending artery before and after coronary artery bypass graft by ultrasound

作　　者：田津[1] 李治安[1] 杨娅[1] 孙琳[1] 何怡华[1] 

机构地区：[1]首都医科大学附属北京安贞医院超声科,北京100029

出　　处：《中国医学影像技术》2004年第8期1220-1222,共3页Chinese Journal of Medical Imaging Technology

基　　金：北京市自然科学基金资助项目(7042023)

摘　　要：目的　应用常规超声结合冠脉血流显像技术观察分析冠状动脉搭桥术前后内乳动脉桥及远段左前降支血流动力学改变。方法　行冠状动脉搭桥术患者 46例 ,于手术前后超声检查左内乳动脉 ,其中 3 8例患者检查左前降支远段。结果　术后内乳动脉桥起始段显示率 95 .65 % ,由术前收缩期优势型转变为术后舒张期优势型频谱。左前降支远段血流信号表现为流速及流速时间积分增加。结论　常规超声结合冠脉血流显像技术可为冠状动脉搭桥术后随访提供一种无创的方法。ObjectiveTo observe and analyze the hemodynamic changes of the left mammary arteries (LIMA) and the distal of left anterior descending arteries (LAD) before and after coronary artery bypass graft (CABG). MethodsAll 46 patients with LIMA orthopic bypass graft were detected by routine ultrasound combined with color Doppler coronary flow imaging(CDCFI). All the 46 LIMA and 38 distal LAD were evaluated before and after the operation. Systolic peak velocity, diastolic peak velocity, systolic velocity time integral, diastolic velocity time integral for each segment were measured respectively. ResultsThe percentage of visualization of the proximal segment of LIMA after CABG was 95.65%, and the hemodynamic pattern changed from systolic dominant before the operation to diastolic dominant after the operation. The diastolic peak velocity and diastolic velocity time integral increased in the distal segment of LAD. ConclusionRoutine ultrasound combined with CDCFI provides a non invasive method for the clinical follow up after CABG.

关 键 词：冠脉血流显像技术 内乳动脉 冠状动脉搭桥术 左前降支 

分 类 号：R514.4[医药卫生—内科学] R445.1[医药卫生—临床医学]