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Vet Surg. 2013 Nov;42(8):951-7. doi: 10.1111/j.1532-950X.2013.12072.x. Epub 2013 Oct 7.

Long-term outcome after surgical ameroid ring constrictor placement for treatment of single extrahepatic portosystemic shunts in dogs.

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  • 1Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athena, Georgia.

Abstract

OBJECTIVE:

To report long-term clinical outcome in dogs treated for single congenital extrahepatic portosystemic shunt (CEHPSS) with a ameroid ring constrictor (ARC) and to identify perioperative variables associated with outcome.

STUDY DESIGN:

Retrospective, multi-institutional study.

ANIMALS:

Dogs (n = 206) with CEHPSS.

METHODS:

Medical records of dogs with CEHPSS treated by ARC were reviewed for perioperative and short-term (<1 month) data. Long-term follow-up information was obtained by telephone interview with referring veterinarians and/or owners. Kaplan-Meier analysis was used to estimate median survival time. Factors associated with short-term survival, outcome grade, and total survival time were identified.

RESULTS:

Fifteen dogs died <1 month after ARC placement. Follow-up data were obtained for 112 of 191 dogs that survived >1 month; median follow was 54 months (range, 1-175 months) and 103 (92%) dogs had no clinical signs. Estimated median survival time was 152 months. Variables significantly associated with short-term survival included being intact and a low total white blood cell (WBC) count. Variables significantly associated with a successful outcome included having surgery later in the study period and negative postoperative nuclear scintigraphy. In the long-term survival analyses, intact dogs and those with higher WBC counts and occlusion pressures and lower bile acid concentrations were more likely to survive.

CONCLUSIONS:

Dogs with CEHPSS treated by ARC generally have a good prognosis and prolonged postoperative survival.

© Copyright 2013 by The American College of Veterinary Surgeons.

PMID:
24118005
[PubMed - in process]
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