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12 March 2017 : Clinical Research  

Efficacy of Intravenous Iron Sucrose in Hemodialysis Patients with Restless Legs Syndrome (RLS): A Randomized, Placebo-Controlled Study

Yinghui Deng1ABCDEFG*, Jinglin Wu1ABF, Qiang Jia1CD

DOI: 10.12659/MSM.900520

Med Sci Monit 2017; 23:1254-1260

Abstract

BACKGROUND: Restless legs syndrome (RLS) is a common disorder in hemodialysis (HD) patients that causes sleep disturbances and diminished quality of life. Because iron deficiency has been implicated in the pathogenesis of RLS, we sought to investigate the effects of intravenous (IV) iron sucrose on symptoms of RLS in HD patients.

MATERIAL AND METHODS: The study was a randomized, placebo-controlled study of 1000 mg iron sucrose versus normal saline as placebo. Patients were evaluated at baseline and 2 weeks after the last injection. The severity of RLS was assessed using the International RLS Study Group rating scale (IRLS). Blood samples were taken to measure iron parameters reflecting the iron status, including serum ferritin (SF) concentration, percentage transferrin saturation (TSAT%) and hemoglobin (Hb), and other biochemical parameters as safety assessments, including creatinine (Cr), urea, intact parathyroid hormone (iPTH), and the index of urea clearance (Kt/V). Adverse events were monitored in all subjects during the period of infusion.

RESULTS: After 2 weeks, IRLS scores decreased more in the IV-iron group (–7.38±2.03) than in the placebo group (–0.81±2.61) (P=0.000). Serum ferritin, TSAT, and hemoglobin increased more in the IV-iron group (227.63±77.64 µg/L; 26.06±7.77%; 13.98±3.62g/L, respectively) than in the placebo group (SF, p=0.000; TSAT, p=0.000; Hb, p=0.000, respectively). There were no significant differences between IV-iron and placebo groups in Cr, urea, iPTH, and Kt/V. No adverse effects were observed in the study.

CONCLUSIONS: IV iron sucrose is a safe and effective treatment for reducing RLS symptoms in HD patients over the short-term.

Keywords: Hemodialysis Units, Hospital, Iron, Restless Legs Syndrome

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750