Stent angioplasty for treatment of canine valvular pulmonic stenosis

Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology
I SosaJ C Fudge

Abstract

Four dogs presented for evaluation and treatment of severe pulmonic valve stenosis and underwent stenting of the pulmonic valve annulus using bare-metal balloon-expandable stents. All dogs survived the procedure with immediate reduction of the transpulmonary valve pressure gradient and increase in activity levels. One dog had a stent fracture and migration 1 month after the intervention. This dog underwent a second procedure, in which multiple stents were used to alleviate the obstruction. The stents that were placed at the level of the right ventricular outflow tract fractured within 1 month of the procedure, and the patient died when a third (surgical) approach was attempted. The other three dogs remain alive 54, 42, and 29 months after the procedure. Stent angioplasty may be a viable option for dogs with valvular pulmonic stenosis in which routine balloon valvuloplasty does not provide a successful outcome. Aggressive attempts to diminish RVOT dynamic obstruction with high-dose beta blockade and avoiding deployment of the stent within the RVOT are recommended to prevent stent fracture and migration.

Citations

Jun 29, 2021·The Journal of Small Animal Practice·A B Saunders
Jun 19, 2021·Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology·T GunasekaranR A Sanders

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