猪髂总动脉狭窄对腹主动脉下段及同侧髂总动脉狭窄上游血流动力学的影响

目的：探讨髂总动脉不同程度狭窄引起腹主动脉下段及同侧髂总动脉狭窄上游血流动力学变化的差异。方法：幼年家猪6只，利用血管夹夹闭髂总动脉侧壁依次造成1/4、1/2、3/4管腔狭窄，记录对应腹主动脉下段及同侧髂总动脉狭窄上游血流流速曲线，测算PSV、MDV。分析所有实验数据并进行统计学处理，观察血流参数与狭窄程度的相关性，并比较髂总动脉不同程度狭窄引起腹主动脉下段及同侧髂总动脉狭窄上游血流动力学变化的差异。结果：PSV与狭窄程度呈线性负相关，MDV随狭窄程度的增加呈负性增加，髂总动脉狭窄上游血流动力学改变较腹主动脉下段显著。狭窄达到一定程度后，同侧髂总动脉狭窄上游出现针尖状反向血流流速曲线，并随狭窄程度的加重而增高。结论：狭窄上游不同部位血流动力学的改变不同，离狭窄越近处变化越显著，针尖状反向血流流速曲线的出现说明靠近狭窄部位。

The hemodynamic condition of the distal abdominal aorta and proximal common iliac artery caused by ipsilateral common iliac arterial stenosis:an experimental study

Objective: To study the hemodynamic differences between distal abdominal aorta and common iliac artery caused by different degrees of ipsilateral common iliac arterial stenosis in swine. Methods: The lateral wall of common iliac artery was pinched with vascular clamp resulting in 1/4, 1/2, 3/4 stenosis in 6 juvenile domestic piglets. The parameters of PSV, MDV were obtained in all objects and analyzed with SPSS 13.0 statistical package. Results: PSV had significant negative correlation with stenotic degree,...