Background
The likelihood that a deceased donor kidney will be used evolves during the allocation process. Transplant centers can either decline an organ offer for a single patient or for multiple patients at the same time. We hypothesize that refusals for a single patient indicate issues with individual patients, whereas simultaneous refusals for multiple patients indicate issues with organ quality.
Methods
We investigate offer refusal patterns between January 1, 2022, and December 31, 2023, using Organ Procurement and Transplantation Network data. We aggregate refusals at the same timestamp by a center and define a multiple patient refusal as >1 or >5 patients simultaneously refused. We report the refusal codes associated with single and multiple patient refusals and the nonutilization rate after receiving single and multiple patient refusals by cross-clamp.
Results
Patient-related refusal reasons are more commonly single patient refusals, whereas organ-related refusal reasons are more commonly multiple patient refusals. Multiple patient refusals before cross-clamp are associated with nonutilization, but single patient refusals are positively correlated with utilization. The nonutilization rate was 28% for organs without pre-clamp refusals, 35% with a single center sending a multiple patient refusal, but only 12% with a single center sending a single patient refusal.
Conclusions
The risk of nonutilization can be assessed early in the offering process based on the number of single and multiple patient refusals received by a specific time (e.g., cross-clamp). Understanding refusal patterns can guide the development of transparent protocols for accelerated placement.