Prophylaxis against bone loss in Kock reservoir patients with reduced glomerular filtration rate.

OBJECTIVE: We investigated whether treatment with calcium carbonate and vitamin D3 can improve the bone mineral content of patients with ileal reservoirs for continent urinary diversion and a reduced glomerular filtration rate (GFR). MATERIAL AND METHODS: Twenty-six patients with Kock reservoirs were included in the study. Bone mineralization was determined using dual-energy X-ray absorptiometry. Kidney function was estimated from Cr-EDTA clearance and serum cystatin C concentration. Osteocalcin and parathyroid hormone in serum were also measured. Patients with reduced GFR were treated with calcium carbonate and vitamin D3 perorally. RESULTS: Bone mineral density in the femur neck and hip increased in the treatment group, as reflected by an improved T score. CONCLUSION: Patients with ileal reservoirs for continent urinary diversion and reduced kidney function should be supplemented with calcium carbonate and vitamin D3 in order to reduce the long-term risk of osteoporosis.