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Year : 2020  |  Volume : 11  |  Issue : 4  |  Page : 184-190

Intravenous iron versus oral iron in anemia management for perioperative patients: A systemic review and meta-analysis

1 Department of Urology, Glasgow Royal Infirmary, Greater Glasgow and Clyde, Glasgow, UK
2 Department of Urology, Hamad General Hospital, Hamad Medical Corporation, Doha, UK
3 Qatar, Queen Elizabeth University Hospital, Glasgow, UK
4 Department of Pediatric, Rotherham General Hospital, UK

Correspondence Address:
Dr. Ahmed H Alshantti
Glasgow Royal Infirmary, NHS Greater Glasgow and Clyde, Glasgow
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/joah.joah_76_20

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INTRODUCTION: Perioperative anemia commonly occurs in patients undoing major surgery. We aimed to assess the efficacy and safety of intravenous iron therapy (IVIT) given compared to standard practice of oral iron in the perioperative period. DESIGN: We conducted a Cochrane style systematic review. The search strategy included common search engines: Medline, Embase, Cochrane, and Google Scholar for only eligible clinical trials (randomized controlled trials) comparing IV over oral iron therapy up to July 2019. The primary outcome was the effect of IVIT on the change of hemoglobin level. The secondary outcomes were the effects of IVIT compared to oral iron on ferritin level, mean corpuscular volume, and adverse side effects. Data were collected from each trial and where applicable meta-analyzed using RevMan. RESULTS: Six randomized clinical trials that fit our inclusion criteria were included in the study. We found that IVIT increases the level of hemoglobin compared to oral iron (MD: Mean difference 0.90, 95% confidence interval [CI]: 0.44–1.36, P = 0.000). Serum ferritin levels increased significantly in favor of the IV iron group compared to the oral iron group at posttreatment (MD: 106.95, 95% CI: 73.29, 140.62 ng/mL). In addition, marked increases in the pooled mean corpuscular volume (MCV) level were observed in favor of the IVIT (MD: 6.07, 95% CI: −0.88–13.02). There was no significant difference in the rate of adverse effects in both the groups. CONCLUSION: IV iron therapy is more effective than oral iron on increasing hemoglobin, ferritin, and MCV in the perioperative period and is also as safe with no diffidence in the risk of developing adverse side effects.

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