Scotti L, Di Salvo P, Bocci F, Pieramati C, Polisca A
Via San Costanzo 4, Perugia, Italy.
Theriogenology. 2008 Jun;69(9):1111-9. doi: 10.1016/j.theriogenology.2008.01.025. Epub 2008 Apr 14.
The aim of this work is to evaluate the haemodynamic characteristics of maternal and foetal vessels during normal pregnancy in queens, using colour Doppler and pulsed wave Doppler ultrasonography, in order to obtain information about maternal and foetal circulation. The blood waveforms of the uteroplacental arteries, aorta, caudal cava vein and umbilical cord of the fetuses were recorded weekly in seven healthy pregnant queens. Also, the measurements of peak systolic, end diastolic velocities, resistance and pulsatility indices were carried out. Uteroplacental blood flow was biphasic while the ones of the umbilical artery and aorta were first systolic and then diastolic. The caudal cava vein showed a typical waveform of venous vessels. During gestation the EDV and PSV of foetal vessels increased (alpha<0.05) while the PI and RI of all vessels examined decreased (alpha<0.05) except for the IP of the aorta. The Doppler ultrasonography, also in queens, can be used to evaluate the characteristics of maternal and foetal vessel flow and their progressive changes during pregnancy. This study can be considered the basis for further contribution in diagnosing and monitoring high-risk pregnancies in Veterinary Medicine.
这项工作的目的是利用彩色多普勒和脉冲波多普勒超声检查来评估正常妊娠期间母猫和胎儿血管的血流动力学特征，以便获取有关母体和胎儿循环的信息。每周对7只健康怀孕母猫的子宫胎盘动脉、主动脉、尾腔静脉和胎儿脐带的血流波形进行记录。此外，还进行了收缩期峰值、舒张末期速度、阻力和搏动指数的测量。子宫胎盘血流呈双相，而脐动脉和主动脉的血流先是收缩期，然后是舒张期。尾腔静脉显示出典型的静脉血管波形。在妊娠期，胎儿血管的舒张末期速度（EDV）和收缩期峰值速度（PSV）增加（α<0.05），而除主动脉的搏动指数（IP）外，所有检查血管的搏动指数（PI）和阻力指数（RI）均下降（α<0.05）。多普勒超声检查在母猫中也可用于评估母体和胎儿血管血流的特征及其在妊娠期间的渐进变化。这项研究可被视为在兽医学中进一步诊断和监测高危妊娠的基础。
