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The effect of intravenous iron on erythropoiesis in older people with hip fracture

Anaesthesia and Critical Care Research Group, Division of Clinical Neuroscience, Queen's Medical Centre, University of Nottingham, Nottingham, UK. Department of Anaesthesia, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK. Department of Healthcare of Older Life, Nottingham University Hospitals NHS Trust, Nottingham, UK. Nottingham University Hospitals NHS Trust, Nottingham, UK. Warwick Medical School, University of Warwick, Warwick, UK.

Age and ageing. 2019
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Abstract
BACKGROUND anaemia following hip fracture is common and associated with worse outcomes. Intravenous iron is a potential non-transfusion treatment for this anaemia and has been found to reduce transfusion rates in previous observational studies. There is good evidence for its use in elective surgical populations. OBJECTIVE to examine the impact of intravenous iron on erythropoiesis following hip fracture. DESIGN two-centre, assessor-blinded, randomised, controlled trial of patients with primary hip fracture and no contra-indications to intravenous iron. METHOD the intervention group received three doses of 200 mg iron sucrose over 30 min (Venofer, Vifor Pharma, Bagshot Park, UK) on three separate days. Primary outcome was reticulocyte count at day 7 after randomisation. Secondary outcomes included haemoglobin concentration, complications and discharge destination. Eighty participants were randomised. RESULTS there was a statistically significantly greater absolute final reticulocyte count in the iron group (89.4 (78.9-101.3) x 109 cells l-1 (n = 39) vs. the control (72.2 (63.9-86.4)) x 109 cells l-1 (n = 41); P = 0.019; (mean (95% confidence intervals) of log-transformed data). There were no differences in final haemoglobin concentration (99.9 (95.7-104.2) vs. 102.0 (98.7-105.3) P = 0.454) or transfusion requirements in the first week (11 (28%) vs. 12 (29%); P = 0.899). Functional and safety outcomes were not different between the groups. CONCLUSIONS although intravenous iron does stimulate erythropoiesis following hip fracture in older people, the effect is too small and too late to affect transfusion rates. Trial Registry Numbers: ISRCTN76424792; EuDRACT 2011-003233-34.
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Language : eng
Credits : Bibliographic data from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine