alexa Treatment of iron deficiency anemia in orthopedic surgery with intravenous iron: efficacy and limits: a prospective study.
Haematology

Haematology

Journal of Blood Disorders & Transfusion

Author(s): Theusinger OM, Leyvraz PF, Schanz U, Seifert B, Spahn DR

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Abstract BACKGROUND: Preoperative anemia is frequent in patients undergoing orthopedic surgery. The purpose of this study was to assess the preoperative increase of hemoglobin in iron deficiency anemia patients treated with intravenous iron. METHODS: After obtaining written informed consent, 20 patients with iron deficiency anemia received 900 mg intravenous iron sucrose over 10 days starting 4 weeks before surgery. Changes of hemoglobin and iron status were measured over 4 weeks and at discharge. In the last 11 patients, endogenous erythropoietin was also measured. Data were analyzed using the Friedman test followed by pairwise Wilcoxon signed rank tests with Bonferroni correction. RESULTS: Hemoglobin increased significantly (P < 0.0001) after intravenous iron treatment. Overall, the mean maximum increase was 1.0 +/- 0.6 g/dl (range, 0.2-2.2 g/dl). Ferritin increased from 78 +/- 70 to 428 +/- 191 microg/l (P = 0.0001), ferritin index decreased from 2.7 +/- 2.4 to 1.5 +/- 1.0 (P = 0.0001), and soluble transferrin receptor decreased from 4.1 +/- 2.3 mg/l to 3.7 +/- 2.3 mg/l (P = 0.049), whereas transferrin saturation (20.5 +/- 9.0 to 22.9 +/- 9.0\%) and serum iron (13.3 +/- 4.6 to 13.1 +/- 4.5 microm) did not change significantly after intravenous iron treatment. Endogenous erythropoietin decreased from 261 +/- 130 pg/ml to 190 +/- 49 pg/ml 2 weeks after intravenous iron treatment (P = 0.050, not significant after Bonferroni correction). No adverse events related to intravenous iron were observed. The maximum increase of hemoglobin was observed 2 weeks after the start of intravenous iron treatment, indicating that administration of intravenous iron 2-3 weeks before surgery may be optimal. CONCLUSION: Treatment with intravenous iron allows correcting iron deficiency anemia before elective surgery. This article was published in Anesthesiology and referenced in Journal of Blood Disorders & Transfusion

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