Doppler ultrasonographic assessment of feline fetal viability through monitoring the fetal and maternal vasculature : A Longitudinal Study | ||||
| New Valley Veterinary Journal | ||||
| Articles in Press, Accepted Manuscript, Available Online from 24 June 2025 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/nvvj.2025.389786.1083 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
eslam bashandy  1; Mohammed Elmetwally2; Waleed Senosy 3
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| 1Theriogenology Department, Faculty of Veterinary Medicine, New Valley University, Al kharga,72511, Egypt. | ||||
| 2Theriogenology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura,35516, Egypt. | ||||
| 3Theriogenology Department, Faculty of Veterinary Medicine, New Valley University, Al Kharga, New Valley | ||||
| Abstract | ||||
| The aim of present study was to use the non-invasive color Doppler ultrasound to monitor the heamodynemic alterations in the blood flow through the uterine arteries, umbilical artery and fetal aorta in cats during pregnancy. Furthermore, identify a reference qualitative and quantitative evaluation of the changes in uterine artery, umbilical artery and fetal aorta blood flow in cats throughout pregnancy and identify correlations between those measures and fetal age, viability, and development. Nine healthy pregnant short-hair queens, aging from 3 to 5 years and weighing 3 to 6 kg, were examined weekly from day 14 to day 58 after mating. The Doppler indices were blood flow volume (BFV), time averaged maximum velocity (TAMV), peak systolic velocity (PSV), resistance index (RI), pulsatility index (PI), and diameter (D) of Uterine arteries, Umbilical artery and Fetal Aorta in cats during pregnancy. Based on the noninvasive color doppler sonography, the BFV, TAMV, PSV were increased significantly at all-time points of the examination. Conversely, the RI and PI decreased gradually at all-time points. Fetal Heart Rate was first registered on Day 21 when it began to increase up to Day 42 and then diminished to the end of gestation. The study concludes that Doppler evaluation could be a beneficial adjunct to prenatal treatment of pregnant queens, including assessment of vascular gestational development and prediction of gestational age. However, there is a need for further comparative studies involving impaired pregnancies. | ||||
| Keywords | ||||
| Doppler ultrasonography; fetoplacental circulation; fetal viability; pregnant cat | ||||
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