Impact of the 2018 UNOS Allocation Change on Severe Primary Graft Dysfunction: A Report from the International Consortium on PGD

Purpose: In 2018, the allocation system for heart transplantation (HT) in the US was changed to decrease waitlist times for the sickest candidates. Prior studies have suggested that this change resulted in the transplantation of sicker recipients, with an increase in recipients bridged with temporary MCS. We investigated whether the allocation change has impacted the prevalence of severe primary graft dysfunction (PGD).