2016 ACVIM Forum Research Abstract Program

The prototype coil was implanted in a total of 25 dogs. Most common breeds were Hovawart (n = 8) and Golden Retriever (n = 5). Median age was 10 months (range 6 -35) and median body weight 26 kg (range 12 -48). iPSS originated from the right lateral (n = 1), right medial (n = 7) or left portal vein branch (n = 17). 19/25 dogs showed portal hypertension during shunt blocking. Unblocked and blocked shunt diameter were 5.2 -13.0 mm (median 8.3; n = 25) and 9.0 -21.0 (median 13.3; n = 24), respectively. Intervention was successful at the first (n = 24) or second (n = 1) intervention. Major complications developed in 5 dogs leading to death in 2 dogs. Minor complications were common and were mostly associated with bleeding problems. One dog was lost to follow-up after three months. Of the remaining 22 dogs, 5 experienced complications associated with change to a non-protein restricted diet: severe neurological abnormalities leading to euthanasia (n = 1), moderate symptoms leading to re-intervention (n = 2), mild symptoms which could be treated successfully by changing to a moderately protein restricted diet (n = 2). All dogs without portal hypertension showed functional closure at 3 months follow-up. In dogs with portal hypertension the cumulative proportion of functional closure reached 81% at 24 months follow-up.