UK National DCD Heart Transplant Program - First Year Experience

Abstract

Purpose The donation after circulatory death (DCD) pathway is an emerging contributor to heart transplantation. Selected UK centres started their adult programs in 2015, followed by a centrally funded national pilot commencing September 2020. The purpose of this study is to review the activity and outcomes of the UK National DCD heart transplant program during this pilot. Methods Data on DCD heart transplants between September 2020 to August 2021 were extracted from the UK Transplant Registry, held by National Health Service Blood and Transplant. The Registry contains data on all offered organs from potential donors, proceeding donations and organ recipients. Additional data were collected on the DCD Heart travel document. The DCD hearts were procured by 3 specialist retrieval teams, with national organ allocation to all 7 adult and paediatric heart transplant centres. Endpoints The hearts of 143 potential DCD donors were referred for offering during this 12-month period, from all areas of the UK. This resulted in 77 acceptance, 60 retrievals, 33 hearts retrieved and 30 transplants. Direct procurement and machine perfusion was the technique used for all DCD heart retrievals with 2 hearts retrieved during abdominal normothermic regional perfusion. Six procurements were performed by a hybrid team consisting of members from 2 retrieval teams, and 21 were transplanted by a different centre to that of the retrieval team. Median donor and recipient age was 33 (range: 12-50) and 46 (range: 13-62), respectively. Seven recipients were super-urgent and 13 were urgent; with a median wait time of 20 days (range: 1-320). In the same period there were 105 adult and 18 paediatric donation after brain death (DBD) heart transplants; DCDs representing 19% and 22% of the programs, respectively. Two patients died within 30 days, making the 30-day survival rate 93.3% (95% CI: 76-98), similar to the DBD cohort. Extracorporeal membrane oxygenation in the first 30 days was required for 15 out of 30 transplants. Conclusion In the 12-month pilot, DCD heart transplantation was 20% of the total heart transplant activity. This UK wide program was underpinned by unprecedented collaboration between UK cardiothoracic teams, and with abdominal teams, improving communication and shared learning. High volume, specialised procurement teams are key to a successful DCD heart sharing program to overcome challenges from the learning curve. The donation after circulatory death (DCD) pathway is an emerging contributor to heart transplantation. Selected UK centres started their adult programs in 2015, followed by a centrally funded national pilot commencing September 2020. The purpose of this study is to review the activity and outcomes of the UK National DCD heart transplant program during this pilot. Data on DCD heart transplants between September 2020 to August 2021 were extracted from the UK Transplant Registry, held by National Health Service Blood and Transplant. The Registry contains data on all offered organs from potential donors, proceeding donations and organ recipients. Additional data were collected on the DCD Heart travel document. The DCD hearts were procured by 3 specialist retrieval teams, with national organ allocation to all 7 adult and paediatric heart transplant centres. The hearts of 143 potential DCD donors were referred for offering during this 12-month period, from all areas of the UK. This resulted in 77 acceptance, 60 retrievals, 33 hearts retrieved and 30 transplants. Direct procurement and machine perfusion was the technique used for all DCD heart retrievals with 2 hearts retrieved during abdominal normothermic regional perfusion. Six procurements were performed by a hybrid team consisting of members from 2 retrieval teams, and 21 were transplanted by a different centre to that of the retrieval team. Median donor and recipient age was 33 (range: 12-50) and 46 (range: 13-62), respectively. Seven recipients were super-urgent and 13 were urgent; with a median wait time of 20 days (range: 1-320). In the same period there were 105 adult and 18 paediatric donation after brain death (DBD) heart transplants; DCDs representing 19% and 22% of the programs, respectively. Two patients died within 30 days, making the 30-day survival rate 93.3% (95% CI: 76-98), similar to the DBD cohort. Extracorporeal membrane oxygenation in the first 30 days was required for 15 out of 30 transplants. In the 12-month pilot, DCD heart transplantation was 20% of the total heart transplant activity. This UK wide program was underpinned by unprecedented collaboration between UK cardiothoracic teams, and with abdominal teams, improving communication and shared learning. High volume, specialised procurement teams are key to a successful DCD heart sharing program to overcome challenges from the learning curve.