2016 ACVIM Forum Research Abstract Program

This study investigated the relationship between the measured AoSA and response to combined cutting and high pressure balloon valvuloplasty (CB/HPBV), in dogs with severe SAS. Retrospective evaluation of angiographic and echocardiographic video loops of 22 client-owned dogs of various breeds affected with severe SAS (PG mean 143.36 mmHg; range 80.49-322.5 mmHg) who underwent CB/HPBV were evaluated at the baseline time point immediately prior to the procedure. Two board-certified veterinary cardiologists and 1 novice evaluated these video loops to identify still frame images to be used to measure the AoSA. Each evaluator was blinded to the other 2 evaluators' selected images and subsequent measurements of the AoSA. All evaluators were blinded to initial PG and patient outcomes following the procedure. The percentage decrease in PG at 24 hours, 6 months, and 12 months after ballooning was then calculated and correlated to the measured AoSA at each recheck and for each imaging plane.