Kidney function after solitary pancreas transplantation.

Preserving kidney function in patients after solitary pancreas transplantation (SPTx) is an important consideration, yet various factors may negatively impact long-term function of the native kidneys or kidney allograft. To determine changes in kidney function over time in a series of patients receiving SPTx, we conducted a retrospective analysis and tracked changes in serum creatinine (SCr) and calculated glomerular filtration rate (GFR) from baseline to 6 months, 1 year, or 3 years after SPTx in a series of pancreas after kidney transplants PAK; (n = 61) and pancreas transplants alone PTA; (n = 27) performed at our institution. The mean follow-up for the PAK and PTA groups was 3.4 and 2.7 years, respectively. In this series, 8% of patients after SPTx developed significant kidney failure, defined by either initiation of dialysis or receiving a kidney transplant (PAK-6, PTA-1). Twenty seven percent of SPTx patients with a baseline GFR < 60 suffered either an elevated SCr > 2.2, dialysis, or kidney transplant, whereas no patients with a baseline GFR > 60 developed significant kidney dysfunction. In the PAK group, the GFR did not show significant deterioration over time. In contrast to relatively stable kidney function in PAK patients, PTA patients experienced overall significantly greater rates of decline over time. GFR in PTA patients decreased from 78 +/- 19 (40 to 114) mL/min/1.73 m2 at baseline to 65 +/- 20 at 1 year (P = .006), while SCr increased from 1.03 +/- 0.25 mg/dL to 1.28 +/- 0.43 over the same time period (P = .012). These data show that kidney function may deteriorate after SPTx and proper patient selection may reduce the frequency of this complication.