Analysis of the efficacy and factors influencing the response of secondary hyperparathyroidism patients on hemodialysis to cinacalcet

Nefrología : publicación oficial de la Sociedad Española Nefrologia
Pilar Segura TorresV Pérez Bañasco

Abstract

Treatment of secondary hyperparathyroidism with cinacalcet improves control of PTH, phosphorus, calcium and Ca x P product, enabling to achieve targets recommended by K/DOQI guidelines for PTHi in only 30-50% of patients, in studies with a very selected population. The aim of this study was to analyze its effectiveness in real clinical practice, comparing results with targets recommended by K/DOQI and KDIGO guidelines and to investigate factors having influence on PTH responsiveness to cinacalcet. We collected data of evolution of 74 patients on hemodialysis with secondary hyperparathyroidism who were treated with cinacalcet for at least 6 months. According K/DOQI targets we observed a reduction of proportion of patients with PTHi > 300 pg/ml to 50%, a decrease of hyperphosphoremia from 38.4% to 23.3% and proportion of patients with Ca x P product > 55 mg2/dl2 from 37.8% to 15.1%. By contrast, presence of hypocalcemia increases from 2.7% to 12.3%. Comparing with KDIGO targets, proportion of patients with PTHi > 600 pg/ml decreased from 41.1% to 16.4% and with hyperphosphoremia from 68.5% to 52.1%. However, when considering patients with baseline PTHi > 600 pg/ml prevalence of P > 4.5 mg/dl decreased from 83.3% to 55.2%. We obse...Continue Reading

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