Di Salvo P, Bocci F, Zelli R, Polisca A
Department of Veterinary Pathology Clinical and Diagnostic, Section of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, University of Perugia, S. Costanzo 4, 06100 Perugia, Italy.
Res Vet Sci. 2006 Dec;81(3):382-8. doi: 10.1016/j.rvsc.2006.03.004. Epub 2006 May 12.
The aim of this work is to evaluate the haemodynamic characteristics of maternal and fetal vessels during normal pregnancy in bitches, using Colour and Pulsed wave Doppler ultrasonography, in order to obtain more information about maternal and fetal circulation. The blood waveforms of the uteroplacental arteries, aorta, caudal cava vein and umbilical cord of the fetuses were recorded weekly in 16 pregnant bitches. 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 cava showed a typical waveform of venous vessels. During gestation the EDV and PSV of fetal 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 was used to study the characteristics of maternal and fetal vessel flow and their progressive changes during pregnancy. This study can be considered a further contribution in diagnosing and monitoring high-risk pregnancies in Veterinary Medicine.
本研究的目的是利用彩色和脉冲波多普勒超声检查评估母犬正常妊娠期间母体和胎儿血管的血流动力学特征，以便获取更多有关母体和胎儿循环的信息。每周对16只怀孕母犬的子宫胎盘动脉、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性，而脐动脉和主动脉的血流先是收缩期，然后是舒张期。腔静脉显示出典型的静脉血管波形。在妊娠期间，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）。多普勒超声检查用于研究母体和胎儿血管血流的特征及其在妊娠期间的渐进性变化。本研究可被视为对兽医学中高危妊娠的诊断和监测的进一步贡献。
Zotero 插件