Longitudinal Doppler sonographic measurements of vascular impedance in the central and peripheral spiral arteries throughout pregnancy
Longitudinal Doppler sonographic measurements of vascular impedance in the central and peripheral spiral arteries throughout pregnancy
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DOI：
10.1002/(sici)1097-0096(200002)28:2
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发表时间：
2000-02-01
影响因子：
0.9
通讯作者：
Tsai, CH
中科院分区：
文献类型：
--
作者：
Hsieh, YY;Chang, CC;Tsai, CH
目的.我们评估了在整个无并发症妊娠的中央和外周胎盘床的螺旋动脉的血管阻抗。应用经腹彩色多普勒超声检测94例无并发症单胎妊娠妇女的螺旋动脉搏动指数（PI）、阻力指数（RI）和收缩期峰值流速。从月经第10 ~ 40周开始，每5周进行一次超声检查。螺旋动脉中央段与外周段的PI、RI和收缩期峰值流速无差异。经龄25周后中央螺旋动脉PI和RI值。经龄20周后外周动脉PI、RI值下降。需要更多的受试者来阐明正常和复杂妊娠过程中中央和外周螺旋动脉阻抗的变化。(C)John Wiley & Sons，Inc.
Purpose. We assessed vascular impedance in the spiral arteries in the central and peripheral placental bed throughout uncomplicated pregnancies.Methods. Transabdominal color Doppler sonography was used to measure the pulsatility index (PI), resistance index (RI), and peak systolic velocity in the central and peripheral spiral arteries in 94 women with uncomplicated singleton pregnancies. Sonographic examinations took place approximately every 5 weeks from 10 to 40 weeks' menstrual age.Results. PI, RI, and peak systolic velocity were not different in the central versus the peripheral segments of the spiral arteries. The PI and RI values of central spiral arteries after 25 weeks' menstrual age. The PI and RI values of peripheral arteries decreased after 20 weeks' menstrual age.Conclusions. Additional subjects are needed to clarify changes in the impedance of central and peripheral spiral arteries over the course of normal and complicated pregnancies. (C) 2000 John Wiley & Sons, Inc.