Management of Kidney Transplant Patients with Elevated Creatinine

Initial Assessment and Management

The American Society of Transplantation recommends immediate hospitalization for comprehensive evaluation of the failing allograft and to determine the cause of the severely elevated creatinine in a kidney transplant patient 1, 2
Obtain urgent nephrology consultation, preferably with a transplant nephrologist, to guide management 1, 3
Perform a comprehensive metabolic panel including electrolytes, BUN, creatinine, and calculate estimated GFR using appropriate equations 4, 2
Evaluate for signs of graft intolerance syndrome (fever, pain over graft site, hematuria, tenderness) 1, 3
Review current immunosuppressive regimen and medication adherence 5

Perform ultrasound of the transplanted kidney to evaluate for hydronephrosis, vascular complications, or other structural abnormalities 1
Consider transplant kidney biopsy to determine the cause of allograft dysfunction (rejection, recurrent disease, CNI toxicity, etc.) 1, 2
Check donor-specific antibody (DSA) levels to assess for antibody-mediated rejection 6, 4
Evaluate for infections that may be contributing to allograft dysfunction 5

Optimize immunosuppression based on biopsy findings and clinical status 1, 5
Prepare for transition to renal replacement therapy (dialysis) if not already required 1, 3
Develop a plan for immunosuppression tapering based on candidacy for re-transplantation, residual kidney allograft function, and risk of complications from overimmunosuppression 1, 7, 3, 5

Refer for re-transplantation evaluation if the patient is a suitable candidate 1, 2
Establish baseline panel reactive antibody (PRA) value to assess sensitization 3
Arrange for vascular access creation if dialysis is needed 3
Establish a shared-care model between transplant center and general nephrology 1, 3

Avoid abrupt discontinuation of immunosuppression, which can precipitate acute rejection or graft intolerance syndrome 1, 3
Do not assume that elevated creatinine is solely due to chronic rejection; other causes such as recurrent disease, medication non-adherence, or CNI toxicity should be considered 1, 5
Be aware that the decision to continue or withdraw immunosuppression should balance the risks of sensitization against the risks of infection and malignancy 3, 5
Consider that race-based eGFR equations may lead to inaccurate assessment of kidney function and potentially delayed referral for re-transplantation 1, 2