Japanese Journal of Veterinary Research;Volume 67 Number 2

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Transperineal ultrasonographic characteristics of the birth canal of bitches during pregnancy and dystocia

Kumara Wickramasekara Rajapakshage, Bandula;Dona Daphney Niranjala, De Silva

Permalink : http://hdl.handle.net/2115/74799
JaLCDOI : 10.14943/jjvr.67.2.185
KEYWORDS : birth canal;dog;dystocia;transperineal ultrasonography

Abstract

Investigation of canine pregnancy complications often poses a challenge to clinicians. The aim of the present study was to investigate the transperineal ultrasonographic characteristics of the birth canal of bitches during pregnancy and dystocia. Transperineal ultrasound examinations were performed on 100 pregnant bitches. In 60 apparently normal pregnant bitches, transperineal ultrasound examination of birth canal revealed mass lesion (n = 2), mild vaginal discharge (n = 5), vaginal wall hyperplasia (n = 2), and vaginal prolapse (n = 1). Forty bitches were in need of veterinary intervention in connection with parturition. The dystocia was of maternal origin in 20 cases and of fetal origin in 15 cases. The secondary uterine inertia observed to be caused by mass lesions (n = 2), vaginal prolapse (n = 1), and narrow pelvic canal (n = 1). The observed fetal causes for dystocia were malpresentation (n = 7), oversized fetus (n = 1), and fetal death (n = 10). The transperineal ultrasound can be used as a simple non-invasive diagnostic modality to evaluate the birth canal of a bitch to diagnose and plan early intervention in managing canine dystocia in clinical practice.

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