Independent predictors of immediate and long-term results after pulmonary balloon valvuloplasty in dogs

✍ Scribed by Chiara Locatelli; Oriol Domenech; Joel Silva; Pedro Oliveira; Elisabetta Sala; Paola Giuseppina Brambilla; Claudio Bussadori

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 323 KB
• Volume: 13
• Category: Article
• ISSN: 1760-2734
• DOI: 10.1016/j.jvc.2010.10.003

✦ Synopsis

Objectives:

Determine whether valve morphology, pulmonary annulus diameter, aortic/pulmonic annulus ratio, balloon-to-annulus ratio (bar), pre-pulmonary balloon valvuloplasty (pbv), doppler gradient, and residual doppler gradient are independent predictors of immediate and long-term results after pbv in dogs as in humans.

Animals, materials and methods:

Retrospective study. medical records of dogs that underwent pbv, from january 1999 to december 2008 were reviewed. all dogs with pre- and immediate (24 h) post-pbv echocardiographic examination were included. 126 dogs were selected. immediate outcome was optimal when the dog survived the pbv and doppler gradient was ≤50 mmhg. long-term outcome (1 year) was optimal when the dog survived at least 1-year follow-up without symptoms and doppler gradient was ≤50 mmhg.

Results:

Only pre-pbv doppler gradient was identified as a significant independent predictor of immediate results (p < 0.001; or 0.97, ci 0.96-0.98). pre-pbv doppler gradient and residual doppler gradient were the only independent predictors of long-term results (p = 0.036; or 0.98, ci 0.96-0.99 and p = 0.005; or 0.95, ci 0.92-0.98, respectively).

Conclusion:

In dogs as in humans higher pre-pbv doppler gradient is one of the most important independent predictor of suboptimal immediate and long-term results after pbv and must be considered before scheduling this procedure. moreover higher valvar residual doppler gradient is an important independent predictors of suboptimal long-term results.