Pediatric cadaver kidney transplants into adults

Area of Science:

• Nephrology
• Transplantation immunology
• Pediatric surgery

Background:

• Cadaveric kidney transplantation is a vital treatment for end-stage renal disease.
• The use of pediatric donor kidneys in adult recipients is often debated due to concerns about organ viability and function.
• Optimizing donor selection criteria is crucial for improving transplant outcomes.

Purpose of the Study:

• To evaluate the outcomes of adult recipients receiving single kidney cadaver transplants from young donors (16 months to 16 years old).
• To compare the renal function and graft survival rates between kidneys from young donors (≤8 years) and older pediatric donors (>8 years).

Main Methods:

• A retrospective analysis of 77 adult recipients of single kidney cadaver transplants performed over a 5-year period.
• Exclusion of cyclosporine immunosuppression to isolate the impact of donor age.
• Comparison of renal function markers (serum creatinine) and graft survival at various time points between two donor age groups.

Main Results:

• Three recipients experienced ischemic ureteral complications, with one resulting in allograft loss.
• Kidneys from younger donors (≤8 years) showed a significantly higher mean 1-month serum creatinine nadir (2.6 ± 1.6 mg/dL) compared to older pediatric donors (1.9 ± 0.8 mg/dL).
• No statistically significant differences were observed in 1-week dialysis requirements, 1-month graft function, actuarial graft survivals, or serum creatinine levels at 3, 6, 12, and 24 months post-transplant.

Conclusions:

• Cadaver kidneys from young pediatric donors can be successfully transplanted into adult recipients.
• Despite initial differences in serum creatinine, long-term graft function and survival are not adversely affected by using kidneys from younger donors.
• This study supports the expanded use of pediatric donor kidneys in adult transplantation to increase organ availability.