Volume: 57 Issue: 3
Year: 2026, Page: 395-399, Doi: https://doi.org/10.51966/jvas.2026.57.3.395-399
Received: Feb. 19, 2026 Accepted: May 8, 2026 Published: Sept. 30, 2026
The present study was undertaken to evaluate uteroplacental artery haemodynamics, combined thickness of the uterus and placenta (CTUP) and serum progesterone concentrations in bitches with dystocia. A total of twelve (n = 12) pregnant bitches presented at the time of parturition were subjected to ultrasonographic examination, including B-mode and colour Doppler assessment. Doppler parameters such as resistive index (RI) and pulsatility index (PI) were recorded, along with serum progesterone estimation to document physiological alterations associated with the whelping process. The animals were divided into two groups: Group 1 (bitches affected with primary uterine inertia) and Group 2 (bitches affected with obstructive dystocia). Data were analysed using the Student’s independent (unpaired) t-test and the results are expressed as mean ± standard error. Differences between groups were considered significant at p < 0.05. No significant differences were observed in haemodynamic indices (RI and PI) and CTUP between the two groups, indicating that uteroplacental perfusion was preserved in both conditions. Serum progesterone levels declined in both groups, suggesting that luteolysis of the corpus luteum had occurred irrespective of the type of dystocia.
Keywords: Dystocia, CTUP, uteroplacental artery, progesterone
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© 2026 Stephy et al. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Joseph, S. J., Paul, M. K., Jayakumar, C., Abilash, R.S., Radhika, G., Ajith, Y., Leena, C. & Pratheesh, M. D. (2026). Assessment of uteroplacental haemodynamics, combined uteroplacental thickness and serum progesterone levels in bitches with primary uterine inertia and Obstructive dystocia. Journal of Veterinary and Animal Sciences, 57(3),395-399