Expanded criteria donor kidney allocation: marked decrease in cold ischemia and delayed graft function at a single...

Area of Science:

• Nephrology
• Transplantation Surgery
• Organ Allocation

Background:

• Expanded Criteria Donor (ECD) kidney allocation aims to improve organ utilization and transplant success.
• The effectiveness of ECD programs in reducing critical transplant metrics like cold ischemia time and delayed graft function (DGF) requires further investigation.

Purpose of the Study:

• To evaluate the impact of implementing an ECD kidney allocation program on cold ischemia time and the incidence of DGF.
• To identify risk factors associated with DGF in kidney transplant recipients.

Main Methods:

• A comparative study analyzing ECD kidney transplants during the first year of the program against historical data from the preceding 5 1/2 years.
• Logistic regression analysis was employed to determine independent risk factors for DGF.

Main Results:

• The ECD program saw a significant decrease in cold ischemia time (16.4 to 7.4 hours) and DGF incidence (43% to 15%).
• Donor kidney biopsies decreased from 85% to 24%, suggesting ECD designation may inform kidney quality assessment.
• Independent risk factors for DGF included recipient height, number of HLA mismatches, and cold ischemia time.

Conclusions:

• The ECD designation can serve as a descriptor of kidney quality, potentially reducing the need for biopsies.
• ECD kidney allocation effectively decreased cold ischemia time and DGF, offering a pathway to enhanced kidney graft survival.