TitlePrevalence of major complications and procedural mortality in 336 dogs undergoing interventional cardiology procedures in a single academic center.
Publication TypeJournal Article
Year of Publication2019
AuthorsLeBlanc, N, Agarwal, D, Menzen, E, Nomi, K, Sisson, DD, Scollan, KF
JournalJ Vet Cardiol
Date Published2019 Jun
KeywordsAnimals, Cardiovascular Surgical Procedures, Dog Diseases, Dogs, Female, Male, Oregon, Postoperative Complications, Prevalence, Retrospective Studies

INTRODUCTION: Overall complication rates associated with a wide range of diagnostic and therapeutic interventional cardiac procedures in a contemporary academic setting have not been reported.

ANIMALS, MATERIALS AND METHODS: Consecutive interventional procedures performed for client-owned dogs were retrospectively analyzed to characterize procedural complications and mortality.

RESULTS: Three hundred sixty-four procedures were performed on 336 dogs. Interventions included attempted or completed transvenous pacemaker (PM) implantation (n = 134) with subsequent pacing system revision (n = 8), pulmonic balloon valvuloplasty (BVP) (n = 117) with a subset of patients undergoing an additional BVP (n = 14), transarterial closure of left-to-right shunting patent ductus arteriosus (PDA) (n = 66), diagnostic angiography and/or cardiovascular pressure measurement (n = 9), transvenous temporary pacing (n = 7), septal defect occlusion (n = 5), heartworm extraction (n = 3), and BVP catheter fragment retrieval (n = 1). The prevalence of major perioperative and postoperative complications for all procedures was 5% and 6%, respectively, and the procedural mortality rate was 2%. The overall rate of major complications was 12% for the PM group, 11% for the BVP group, and 2% for the PDA occlusion group. Both PM implantation and BVP have higher rates of major complications overall compared with PDA occlusion (p=0.0151).

CONCLUSIONS: The results of this study indicate that the prevalence of major complications and mortality associated with interventional cardiac procedures is low; however, significant differences exist in complication rates between procedures.

Alternate JournalJ Vet Cardiol
PubMed ID31174729