Open AccessBalloon Valvuloplasty in 30 Dogs with Pulmonic Stenosis: Effect of Valve Morphology and Annular Size on Initial and 1-Year Outcome
Author(s) -
Claudio Bussadori,
Eric DeMadron,
Roberto A. Santilli,
Michele Borgarelli
Publication year - 2001
Publication title -
journal of veterinary internal medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.356
H-Index - 103
eISSN - 1939-1676
pISSN - 0891-6640
DOI - 10.1892/0891-6640(2001)015<0553:bvidwp>2.3.co;2
Subject(s) - medicine , pulmonic stenosis , asymptomatic , balloon dilation , hypoplasia , stenosis , pulmonary valve , cardiology , balloon , cardiac skeleton , doppler echocardiography , radiography , constriction , radiology , aortic valve replacement , blood pressure , diastole
Case records of 30 dogs in which valvular pulmonic stenosis (PS) was treated by balloon dilation were reviewed retrospectively. Physical examination, thoracic radiographs, 9-lead ECG, echocardiography, and Doppler studies were performed in all dogs. Two-dimensional and Doppler echocardiography were repeated after 24 h and 1 year after treatment. Dogs were divided into 2 groups based on their valvular anatomy on echocardiography and aortic:pulmonary ratio: 18 had type A PS with normal annulus diameter and aortic:pulmonary ratio < or = 1.2, and 12 had type B PS with pulmonary annulus hypoplasia and aortic:pulmonary ratio > 1.2. Most dogs in the type B group were brachycephalic and had no poststenotic dilatation on thoracic radiographs. Of the dogs with type A stenosis, 100% survived valvuloplasty with resolution of clinical signs. At 1-year follow-up, 94.4% were still alive and remained asymptomatic. Of those with type B stenosis, 66.6% had favorable outcome postvalvuloplasty. At 1-year follow-up, 66.6% of dogs were alive, and resolution of clinical signs was obtained in 50%. This study revealed the immediate and long-term efficacy of balloon valvuloplasty in dogs with PS.