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Predelivery hemoglobin was higher with IV ferric carboxymaltose than oral iron in a pregnancy anemia meta-analysis

European Journal of Clinical Pharmacology (PubMed)Jul 10, 2026

AI-summarized from the linked source. Educational brief, not medical advice.

Brief summary

Across 12 studies, pooled hemoglobin and ferritin were higher with intravenous ferric carboxymaltose than oral iron during pregnancy, with the clearest hemoglobin difference before delivery, but substantial between-study heterogeneity limits certainty.

What NurseJet pulled from the source

This systematic review and meta-analysis pooled eight randomized trials and four observational cohorts comparing intravenous ferric carboxymaltose with oral iron for anemia during pregnancy. In the hemoglobin analysis, seven trials and four cohorts included 6,495 patients. Intravenous treatment was associated with hemoglobin that was 0.91 g/dL higher (95% CI 0.30 to 1.51) and ferritin that was 63.8 ng/mL higher (95% CI 37.3 to 90.4). The hemoglobin difference was clearest before delivery, at 1.22 g/dL across eight studies with 1,575 patients, but was not significant postpartum. In smaller safety analyses, intravenous ferric carboxymaltose was associated with fewer drug-related adverse events (RR 0.42) and less nausea (RR 0.27) than oral iron. The authors judged it more effective for hematologic indices and favorably tolerated, while cautioning that substantial heterogeneity across studies limits confidence and does not define the best route for every patient.

Why this matters for nurses

Anemia treatment during pregnancy often requires balancing time to delivery, response to oral therapy, infusion logistics, and medication tolerance. This review matters for obstetric nurses because it quantifies the hematologic difference between routes while making clear that pooled evidence does not determine treatment for an individual patient.

Bedside takeaway

Be aware that pooled predelivery hemoglobin was higher with IV ferric carboxymaltose than oral iron, but heterogeneity and limited safety subsets mean route selection remains individualized.

Explain this for my unit

Key takeaways

  • The review included 12 studies: eight randomized trials and four observational cohorts of pregnant patients with anemia.
  • Pooled hemoglobin was 0.91 g/dL higher with intravenous ferric carboxymaltose than with oral iron.
  • The predelivery hemoglobin difference was 1.22 g/dL, while the postpartum difference was not statistically significant.
  • Smaller safety analyses found fewer drug-related adverse events and less nausea, but heterogeneity remained substantial.

Practice implications

  • For obstetric nurses, the findings support awareness that prescribed intravenous iron was associated with higher predelivery hemoglobin while requiring infusion-specific screening, administration, and observation under local policy. They do not establish that intravenous treatment is appropriate for every patient or replace prescriber-directed selection and follow-up.

Limitations & cautions

  • The review combined randomized trials with observational cohorts, and substantial heterogeneity existed across studies. Safety estimates came from smaller subsets, the postpartum hemoglobin difference was not significant, and the abstract does not establish comparative effects on transfusion, birth outcomes, maternal symptoms, or longer-term infant outcomes.
  • AI-summarized from the linked source. Review the original article before applying to practice.

Citations

Exact source links

Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.

European Journal of Clinical Pharmacology (PubMed)

European Journal of Clinical Pharmacology (PubMed). Efficacy and safety of intravenous ferric carboxymaltose versus oral iron in pregnant women with anemia: a systematic review and meta-analysis.

Open original source

https://pubmed.ncbi.nlm.nih.gov/42426275/

Professional education only

This summary does not replace clinical judgment, facility policy, provider orders, or official guidelines. Verify practice changes against the original source and local protocol.

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