Doppler evaluation of maternal and foetal vessels during normal gestation in queen

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 uterop...

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Bibliographic Details
Published in:Theriogenology 2008-06, Vol.69 (9), p.1111-1119
Main Authors: Scotti, L., Di Salvo, P., Bocci, F., Pieramati, C., Polisca, A.
Format: Article
Language:English
Subjects:
Animals
Aorta - physiology
Blood Flow Velocity
blood vessels
cats
Cats - physiology
dams (mothers)
Doppler
Female
females
Fetus
Foetal vessels
Gestational Age
hemodynamics
Maternal vessels
Maternal-Fetal Exchange - physiology
new methods
placenta
Placenta - blood supply
Pregnancy
Pregnancy, Animal - physiology
Queens
temporal variation
ultrasonography
Ultrasonography, Doppler - veterinary
Umbilical Cord - blood supply
uterus
Uterus - blood supply
Venae Cavae - physiology
veterinary medicine
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Summary: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 ( α < 0.05) while the PI and RI of all vessels examined decreased ( α < 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.
ISSN:0093-691X
1879-3231
DOI:10.1016/j.theriogenology.2008.01.025