To initiate or continue transcatheter aortic valve replacement (TAVR) programs, hospitals need to follow volume requirements for surgical aortic valve replacement (SAVR). However, the association between SAVR volume and TAVR outcomes is not well studied. This study aims to evaluate the association between hospital SAVR and combined SAVR volumes with patient outcomes of TAVR procedures.
This observational cohort study included a total of 60,538 patients with TAVR procedures. The primary outcomes of the study were associations between SAVR volume, SAVR, and TAVR volumes. Other outcomes included the risk of death, stroke, and readmissions within 30 days determined using the hierarchical logistic regression model.
The findings suggested that hospitals with high SAVR volumes were likely to implement higher TAVR early, which resulted in higher growth in TAVR volumes over time. Further adjustment indicated that high hospital SAVR volume was not independently associated with improved patient outcomes after TAVR. A joint analysis of TAVR and SAVR volumes indicated that patients treated in hospitals with high TAVR volumes had lower 30-day mortality after TAVR.
The research concluded that hospitals with high SAVR volume were likely to adopt TAVR quickly; however, hospital SAVR volume alone was not associated with better TAVR outcomes.