Intravenous ferrous sucrose versus placebo in addition to oral iron therapy for the treatment of severe postpartum anaemia: a randomised controlled trial.

Objective: The aim of the study was to evaluate the effectiveness of intravenous iron versus placebo added to standard oral iron therapy in the treatment of severe postpartum anaemia.

Design: A randomised, double-blind, parallel-group, placebo-controlled clinical trial was performed in a single centre.

Setting: Hospital Clinic of Barcelona, Barcelona, Spain.

Population: A cohort of 72 women with severe postpartum anaemia (6.0-8.0 g/dl) treated with oral ferrous sulphate (two tablets of 525 mg).

Methods: Women were randomised to receive either intravenous ferrous sucrose (200 mg/24 hours for two consecutive days) or intravenous placebo, in addition to standard iron therapy. Clinical and laboratory data were obtained at 1, 2, and 6 weeks.

Main Outcome Measures: Haemoglobin and haematocrit at 1, 2, and 6 weeks. Other haematological and clinical parameters, psychological status, and adverse side effects were also evaluated.

Results: Haemoglobin and haematocrit values were comparable in women receiving intravenous iron or placebo in addition to oral iron therapy at any of the time points. At 6 weeks, haemoglobin level (mean ± SD) was 12.2 ± 1.0 versus 12.2 ± 0.9 g/dl, with a mean difference of -0.03 (95% CI -0.6 to 0.6), in the placebo and in the intravenous iron groups, respectively. No differences were found between clinical symptoms of anaemia, psychological status, and adverse side effects between groups.

Conclusions: Intravenous iron added to oral iron therapy did not show significant benefits over placebo, neither in haemoglobin rise nor in symptoms or adverse side effects.