摘要
目的:探讨低温条件下兔三级肾动脉血流动力学变化规律。方法:建立兔低温模型,选取20只兔,平均分为5组,分别置于室温,-10℃和-15℃中,分别于4h和8h时进行肾脏二维超声及彩色多普勒检查(CDFI)。二维超声测量肾脏大小,记录其长、宽、厚径;多普勒流速曲线分析肾门部主肾动脉(MRA)、肾窦部段动脉(SRA)中部和肾锥体两侧缘的叶间动脉(IRA)的血流动力学指标:收缩期峰值血流速度(PSV/Vs),舒张术期最低血流速度(EDV/VD),阻力指数(RI)。结果:低温条件下肾脏的各径线测值均无改变;血流参数收缩期峰值血流速度,舒张期最低血流速度和阻力指数在各级肾动脉表现出不同的特点。结论:超声检查可以反映低温条件下兔三级肾动脉的血流动力学改变,可为临床研究低温所引起的肾损害提供信息。
Purpose： To study the changes of hemodynamics parameters of rabbit renal artery under the low temperature condition. Methods： Twenty rabbits were included in our study, and they were ran- domly divided into 5 groups, which were kept in room temperature, - 10 ℃ for 4 and 8 hours, - 15 ℃ for 4 and 8 hours. Renal ultrasonography and Color Doppler examination（CDF]） were undergone for all the groups. The renal size（length, width and thickness） were measured by two - dimensional ultrasound. The hemodynamic parameters （peak systolic velocity, end diastole velocity, resistance index） of the main renal artery （MRA）, the segmental renal artery （SRA） and interlobular renal artery（IRA） were analyzed by Doppler velocity analysis. Results： Under low temperature condition, the size of the kidneys was not changed. The changes of the hemodynamic parameters （peak systolic velocity, end diastole velocity , resistance index） were shown with different characters. Conclusion： The changes of the hemodynamic parameters of renal arteries can be monitored by ultrasonography exam, which were useful for the eval- uation of renal damage under low temperature condition.
出处
《中国医学计算机成像杂志》
CSCD
北大核心
2012年第1期72-75,共4页
Chinese Computed Medical Imaging
基金
全军“十一·五”课题科技攻关项目(08G001)~~
