Single extrahepatic portacaval-shunt in an African lion (Panthera-leo)

Quandt, S. K. F., Vanrensburg, I. J., Leisewitz, A. L. , Buffa, E. A., Reuter, B. E. E. and Reyers, Fred (1992) Single extrahepatic portacaval-shunt in an African lion (Panthera-leo). Journal of Zoo and Wildlife Medicine, 23 (3). pp. 336-341. ISSN 1042-7260

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A subadult African lioness (Panthera leo) was presented with excessive salivation, star gazing, high-stepping gait, abnormal behavior, and loss of consciousness. Antibiotic treatment resulted in only temporary improvement. Clinical examination revealed a mild hypoalbuminemia and an elevated fasting blood ammonia concentration of 292 mumol/L. During laparotomy, a large tortuous vein was found that entered the vena cava caudal to its confluence with the renal veins. An intraoperative mesenteric portography was performed, and the vein was identified as an extrahepatic solitary portopostcaval shunt. While the basal mesenteric pressure was being monitored, the shunt was ligated. Postligational portal angiography revealed the portal blood flow passing through the liver. Blood ammonia concentration decreased to 52.6 mumol/L within 2 hr after surgery and to 37.1 mumol/L 8 days postoperative. No further signs have been observed in the lioness.

Keywords:Portocaval shunt, Portosystemic shunt, Hepatic encephalopathy, African lion, Panthera leo
Subjects:D Veterinary Sciences, Agriculture and related subjects > D300 Animal Science
Divisions:College of Science > School of Life Sciences
ID Code:8794
Deposited On:11 Jul 2013 15:32

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