Abstract
The volume-outcome relation for complex surgical procedures such as living donor liver transplantation (LDLT) generally favors high volume (HV) centers. It is important for low to medium volume (MV) centers to evaluate their centers' performance against HV centers to allow early detection and correction of potential systemic issues. There is a dearth of national and international comprehensive registries for LDLT that may allow reasonable risk-adjusted comparisons for benchmarking. This study aims to evaluate the LDLT program by comparing our center's performance against HV centers of the Adult-to-Adult Living Donor Liver Transplantation cohort. Patient outcomes from a MV transplant center were compared with 11 HV transplant centers from the Adult-to-Adult Living Donor Liver Transplantation cohort. Outcomes evaluated included length of hospital stay, same admission mortality, 90-day mortality, and overall survival. A total of 1381 patients were analzyed. HV 1 to 4, 6, 8, 9, and 11 centers had a shorter median length of hospital stay compared with the MV center (All Dunnett corrected P values all less than .05). HV 9 and 11 centers had lower same admission mortality compared with the MV center (Dunnett corrected P=.023 and .015). After adjusting for other significant predictors, the MV center had comparable 90-day mortality rates and overall survival rates to all HV centers. This benchmarking exercise has demonstrated that the limitation of low institutional case volume can be overcome with a protocol-based framework to implement a safe LDLT program. This framework presented can be adopted for developing programs.
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