High Pretransplant Parathyroid Hormone Levels Increase the Risk for Graft Failure after Renal Transplantation

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Abstract

Background.

Calcium (Ca), phosphate (P), and parathyroid hormone (PTH) are important variables influencing the risk for cardiovascular disease in dialysis patients. We studied the influence of long-standing Ca-P disregulation on renal transplant survival.

Methods.

Pretransplant PTH, Ca, P, total protein (TP), albumin, and alkaline phosphatase (AP) values were gathered in all 407 patients that received a renal transplant in our center between January 1, 2000 and July 1, 2004. Other variables expected to influence the risks were included.

Results.

In the Cox proportional hazards analysis the risk for graft failure censored for death was significantly influenced by pretransplant PTH concentration (P=0.008) and donor type (P<0.001). The influence of PTH on the risk for patient death was not significant. The risk for acute rejection was studied but PTH level did not have a significant influence on this risk (P=0.055). The risk for delayed graft function was not influenced by PTH level.

Conclusion.

Serum PTH levels have an independent influence on the risk for graft failure censored for death. Efforts to improve calcium-phosphate-PTH homeostasis in patients on the waiting list for renal transplantation should be encouraged also to improve graft survival.

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