Center Volume Not Associated with Survival Benefit of Inter-hospital Transfer for Pediatric CardiacSurger.

Objective: To evaluate the relationship between center volume and inpatient mortality after inter-hospital transfer among patients undergoing pediatric cardiac surgery using contemporary real-world data.

Methods: The Kids' Inpatient Database (KID) was queried for cardiopulmonary bypass (CPB) cases (CPB) for years 2016 and 2019. Hospitals were divided into three groups based on terciles of volume: "low": ≤103 cases/year, "mid":104-194 cases/year, and "high": >194 cases/year.