The bone and mineral disorder of children

DAGMARA BORZYCH; LESLEY REES; IL SOO HA; ANNABELLE CHUA; PATRICIA GARRAMUÑO VALLES; MARIA LIPKA; PEDRO ZAMBRANO; THURID AHLENSTIEL; SEVCAN A. BAKKALOGLU; ANA P. SPIZZIRRI; LAURA LOPEZ; FATIH OZALTIN; NIKOLETA PRINTZA; PANKAJ HARI; GU¨ NTER KLAUS; MUSTAFA BAK; ANDREA VOGEL; GEMA ARICETA; HUI KIM YAP; BRADLEY A. WARADY; FRANZ SCHAEFER

KIDNEY INTERNATIONAL

NATURE PUBLISHING GROUP

Lugar: New York; Año: 2010 vol. 78 p. 1295 - 1304

0085-2538

The bone and mineral disorder of children undergoing chronic peritoneal dialysis. Borzych D, Rees L, Ha IS, Chua A, Valles PG, Lipka M, Zambrano P, Ahlenstiel T, Bakkaloglu SA, Spizzirri AP, Lopez L, Ozaltin F, Printza N, Hari P, Klaus G, Bak M, Vogel A, Ariceta G, Yap HK, Warady BA, Schaefer F; International Pediatric PD Network (IPPN). Collaborators (70) Sojo E, Coccia PA, Suarez A, Valles PG, Salim R, van Hoeck K, Koch V, Feber J, Geary DA, White C, Valenzuela M, Villagra J, Cano F, Contreras MA, Vogel A, Zambrano P, Chiu MC, Xu H, Vondrak K, Rönnholm K, Ranchin B, Ulinski T, Fischbach M, Büscher R, Kemper M, Pape L, Schaefer F, Borzych D, John U, Klaus G, Haffner D, Papachristou F, Bagga A, Kanitkar M, Verrina E, Edefonti A, Leozappa G, Landau D, Ha IS, Paik KH, Sahpazova E, Groothoff JW, Silva Y, Zurowska AM, Borzych D, Drozdz D, Lipka M, Sczepanska M, Brumariu O, Yap HK, Ariceta G, Ozaltin F, Bakkaloglu S, Bilge I, Serdaroglu E, Bal A, Mir S, Rees L, Watson AR, Grünberg J, Greenbaum L, Neu A, Askenazi D, Gipson D, Patel H, Dharnidharka V, Bunchman T, Chua A, Warady BA, Zaritsky J. Source Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg, Germany. Abstract The mineral and bone disorder of chronic kidney disease remains a challenging complication in pediatric end-stage renal disease. Here, we assessed symptoms, risk factors and management of this disorder in 890 children and adolescents from 24 countries reported to the International Pediatric Peritoneal Dialysis Network Registry. Signs of this disease were most common in North American patients. The prevalence of hyperphosphatemia increased with age from 6% in young infants to 81% in adolescents. Serum parathyroid hormone (PTH) was outside the guideline targets in the majority of patients and associated with low calcium, high phosphorus, acidosis, dialysis vintage and female gender. Serum calcium was associated with dialytic calcium exposure, serum phosphorus with low residual renal function and pubertal status. PTH levels were highest in Latin America and lowest in Europe. Vitamin D and its active analogs were most frequently administered in Europe; calcium-free phosphate binders and cinacalcet in North America. Clinical and radiological symptoms markedly increased when PTH exceeded 300 pg/ml, the risk of hypercalcemia increased with levels below 100 pg/ml, and time-averaged PTH concentrations above 500 pg/ml were associated with impaired longitudinal growth. Hence, the symptoms and management of the mineral and bone disorder of chronic kidney disease in children on peritoneal dialysis showed substantial regional variation. Our findings support a PTH target range of 100-300 pg/ml in the pediatric age group