The impact of severe acute kidney injury requiring renal replacement therapy on survival and renal function of heart transplant recipients - a UK cohort study.

Severe acute kidney injury (AKI), defined as requiring renal replacement therapy (RRT), is associated with higher mortality postheart transplantation, but its long-term renal consequences are not known. Anonymized data of 3365 patients, who underwent heart transplantation between 1995 and 2017, were retrieved from the UK Transplant Registry. Multivariable binary logistic regression was performed to identify risk factors for severe AKI requiring RRT, Kaplan-Meier analysis to compare survival and renal function deterioration of the RRT and non-RRT groups, and multivariable Cox regression model to identify predicting factors of mortality and end-stage renal disease (ESRD). 26.0% of heart recipients received RRT post-transplant. The RRT group has lower survival rates at all time points, especially in the immediate post-transplant period. However, conditional on 3 months survival, older age, diabetes and coronary heart disease, but not post-transplant RRT, were the risk factors for long-term survival. The predicting factors for ESRD were insulin-dependent diabetes, renal function at transplantation, eGFR decline in the first 3 months post-transplant, post-transplant severe AKI and transplantation era. Severe AKI requiring RRT post-transplant is associated with worse short-term survival, but has no impact on long-term mortality. It also accelerates recipients' renal function deterioration in the long term.

Strategies for expanding the UK pool of potential intestinal transplant donors.

BACKGROUND: The pool of suitable donors and listed recipients for intestinal transplantation is small, resulting in difficulties in donor-to-recipient matching and significant mortality on the waiting list. This study aims to help define the pool of potential donors for intestinal transplantation and propose methods for an increased utilization of donor bowels in the United Kingdom. METHODS: Data on bowel offering from 657 donors after brain stem death (DBD) and on 46 patients on the active intestinal transplant list over 12 months from 14 April 2011 were obtained from the UK Transplant Registry. RESULTS: Family consent for bowel donation was lower than for the other transplantable organs. Only 57% of bowels from DBD donors with consent and meeting the bowel offering criteria were offered for transplantation. A lack of suitable recipients was the most common reason cited for not offering. Only 10% of offered bowels were accepted and transplanted by centers. Donor size discrepancy and human leukocyte antigen incompatibility were common reasons for declining offers of the bowel. There was a scarcity of young and small donors compared with the number of young and small patients requiring a transplant. Two patients who were on the active list during the time period died. CONCLUSIONS: An increased awareness of bowel donation is needed to improve the low offering rate of bowels from DBD donors. A more robust UK bowel allocation system and a formalized European-wide intestinal donor organ sharing program should lead to an increased utilization of available donor bowels and a lower waiting list mortality rate.