Intrahepatic Portosystemic Venous Anomaly in the Dog Perioperative Management and Complications

Abstract

Hypotension, hemorrhage, and acute hepatic congestion were common complications during surgical correction of intrahepatic portosystemic venous anomalies in 13 dogs. Acute splanchnic congestion and hyperthermia were the most serious postoperative complications. Three dogs died within 24 hours; 10 dogs are alive and well after 12 to 46 months.

Prognostic Implications of the Degree of Shunt Narrowing and of the Portal Vein Diameter in Dogs with Congenital Portosystemic Shunts

“…[2][3][4][5][6][21][22][23] On the other hand, long-term mortality (2.9%) was low in comparison with other studies that reported rates of 7% (3/41), 10% (3/29) and 16% (6/37) respectively. 2,4,5 One possible explanation for this difference was 7 dogs with a guarded prognosis were euthanatized intraoperatively in our study.…”

Gauged attenuation of congenital portosystemic shunts: Results in 160 dogs and 15 cats

“…Other investigators have assessed the risk by monitoring venous pressure (3,9,13,14,16,21). False-negative estimates were reported in 2 of 33 dogs (6%) (13), in 2 of 22 dogs (9%) (21), and in 1 of 13 dogs (8%) (14). From these data we conclude that the technically complicated and time-consuming procedure of portal venous pressure monitoring does not produce better results.…”

“…Using these criteria, a false-negative estimate was made in 11 of 175 cases (6%). Other investigators have assessed the risk by monitoring venous pressure (3,9,13,14,16,21). False-negative estimates were reported in 2 of 33 dogs (6%) (13), in 2 of 22 dogs (9%) (21), and in 1 of 13 dogs (8%) (14).…”

Corrosion cast study of the canine hepatic veins

“…Such approaches can provide surgeons with useful information and knowledge for the safe removal of affected liver parts. Detailed knowledge of the liver vessel anatomy is also crucial to understanding the spatial relationships among liver structures that enable correct interpretation/recognition of (i) radiographic and computed tomography scans, (ii) ultrasound images and (iii) intrahepatic vascular anomalies [9], including extra-or intrahepatic left-and right-sided vessel shunts [4,11,12] and patent venous ducts [17]. Research into hollow liver structure arrangement has been based on the studies of formalin-fixed specimens, angiograms and corrosion casts.…”