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Renal transplantation and secondary hyperparathyroidism
K Uchida1, Y Tominaga, Y Tanaka
1Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Japan.
Seminars in Surgical Oncology
|March 1, 1997
Summary
Secondary hyperparathyroidism (2
Area of Science:
- Nephrology and Endocrinology
- Transplantation Medicine
Background:
- Secondary hyperparathyroidism (2'HPT) often improves post-renal transplantation (RTx) with restored allograft function.
- Renal allograft function can decline due to rejection, nephrotoxicity, or disease recurrence, impacting mineral metabolism.
- Pre-transplant parathyroidectomy is recommended for severe 2'HPT to prevent hypercalcemia-induced allograft damage.
Purpose of the Study:
- To analyze the management of secondary hyperparathyroidism (2'HPT) in renal transplant recipients.
- To establish monitoring guidelines and surgical indications for 2'HPT post-renal transplantation.
Main Methods:
- Monitoring of serum parathyroid hormone, calcium, phosphate, and alkaline phosphatase.
- Bone X-ray assessment for vascular calcification.
- Surgical intervention (parathyroidectomy) considered for persistent hypercalcemia.
Main Results:
- Post-RTx parathyroid function and mineral metabolism are closely linked to allograft function.
- Hypercalcemia (>12 mg/dl) post-RTx necessitates parathyroidectomy to prevent vascular calcification.
- Total parathyroidectomy with forearm allograft is an effective surgical option.
Conclusions:
- Careful monitoring of mineral metabolism and calcium levels is crucial for 2'HPT patients post-RTx.
- Timely parathyroidectomy is indicated to prevent hypercalcemia and vascular calcification, preserving allograft and patient outcomes.
- Surgical management of 2'HPT remains important even after successful renal transplantation.