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01.10.2016 | Originalien

Intravenous iron administration in restless legs syndrome

An observational study in geriatric patients

verfasst von: Benjamin Lieske, Ingrid Becker, Ralf Joachim Schulz, Maria Cristina Polidori, Jan Kassubek, Gabriele Roehrig, MD, MPH

Erschienen in: Zeitschrift für Gerontologie und Geriatrie | Ausgabe 7/2016

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Abstract

Background

This observational study was carried out to investigate the effect of intravenous (i.v.) iron administration on the clinical symptoms of restless legs syndrome (RLS) in geriatric outpatients over 65 years old.

Methods

In this study geriatric outpatients (mean 4.5 ± 3.4 comorbidities and 5.7 ± 4.4 drugs taken) were recruited according to the following inclusion criteria: ≥ 65 years, diagnosis of RLS due to iron deficiency, i.e. ferritin < 50 µg/l or transferrin saturation (TFS) < 16 %) as well as no other iron therapy within 2 weeks prior to the study. Of the patients 7 (41 %) received 500 mg ferric carboxymaltose (FCM) and 10 patients (59 %) received iron gluconate (62.5 mg) based on the degree of iron deficiency. As assessed by the international RLS severity scale (IRLS) symptoms were recorded 3 times: at the beginning of iron therapy (t0), after 2 weeks (t1) and after 12 weeks (t2).

Results

A total of 17 patients (13 female, 4 male, mean age 73.2 ± 5.9 years) were included. The IRLS score significantly improved in all patients as shown by an average decrease from 30.2 (± 4.3) to 20.2 (± 4.7) (p < 0.001) after 2 weeks of i.v. iron treatment and to 23.2 ± 6.6 (p < 0.001) after 12 weeks. There was a high correlation between ferritin values and the IRLS score (C 0.729, p < 0.001). The part of the IRLS referring to activities of daily living (ADL) improved from a median of 3 (scores 3–4) to 2 (scores 2–3, p = 0.001) after 2 weeks (effect size − 0.6).

Conclusion

In this study group of geriatric outpatients i.v. administration of iron was associated with a significant improvement of symptoms in RLS as assessed by the IRLS score 2 weeks after treatment. In geriatric patients with RLS associated with iron deficiency, i.v. iron administration should be considered regarding improvement of RLS symptoms and ADL.
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Metadaten
Titel
Intravenous iron administration in restless legs syndrome
An observational study in geriatric patients
verfasst von
Benjamin Lieske
Ingrid Becker
Ralf Joachim Schulz
Maria Cristina Polidori
Jan Kassubek
Gabriele Roehrig, MD, MPH
Publikationsdatum
01.10.2016
Verlag
Springer Medizin
Erschienen in
Zeitschrift für Gerontologie und Geriatrie / Ausgabe 7/2016
Print ISSN: 0948-6704
Elektronische ISSN: 1435-1269
DOI
https://doi.org/10.1007/s00391-015-0984-y

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