Vitamin D therapy in CAPD: what is its role?

Area of Science:

• Nephrology
• Bone Metabolism
• Mineral and Bone Disorders

Background:

• Aluminum toxicity and calcium salt use have evolved renal osteodystrophy management in continuous ambulatory peritoneal dialysis (CAPD).
• Improved understanding of the calcitriol/parathyroid axis aids hyperparathyroid bone disease treatment.
• New assays for intact 1-84 parathyroid hormone (iPTH) impact monitoring.

Purpose of the Study:

• To outline current strategies for managing renal osteodystrophy in CAPD patients.
• To emphasize the role of bone biopsy and iPTH monitoring.
• To discuss calcitriol therapy for hyperparathyroidism.

Main Methods:

• Bone biopsy with tetracycline labeling at dialysis initiation for histology.
• Regular monitoring of serum intact parathyroid hormone (iPTH) levels.
• Assessment of calcitriol's role in managing hyperparathyroidism.

Main Results:

• Bone biopsy is recommended for initial histological diagnosis in CAPD patients.
• Regular iPTH monitoring guides management decisions.
• Oral pulse calcitriol therapy is effective for rising iPTH levels despite controlled calcium and phosphate.

Conclusions:

• Management of renal osteodystrophy in CAPD has been updated by new insights and treatments.
• Bone biopsy and iPTH monitoring are crucial for personalized patient care.
• Oral pulse calcitriol is a cost-effective treatment for hyperparathyroidism, pending long-term histological data.