What is the evidence that enteral iron supplementation improves quality of life in patients with postoperative iron deficiency after ileocolic resection

What is known

- A randomised controlled trial of ferrous fumarate corrected iron-deficiency indices (serum ferritin, iron retention) in ileostomy patients, but the study was small and mostly ulcerative colitis, not post-resection Crohn's. ¹ - Systematic review found oral iron effective for short periods but limited by intolerance/discontinuation in up to 21%, with no established diagnostic or treatment criteria. ² - Iron deficiency's quality-of-life impact (fatigue, delayed recovery) is described in review and consensus text, not measured against an enteral-iron QoL endpoint. ^2,3

What is unknown / caveats

- No retrieved trial measured quality of life as an endpoint - Controlled enteral-iron data are from a small 1982 ileostomy cohort, predominantly ulcerative colitis, not ileocolic-resection Crohn's - Oral iron may enhance intestinal inflammation in colitis models, and IV iron is favoured in active disease - Your framing is largely correct: the enteral-iron evidence here is small, dated, and does not report a blinded quality-of-life outcome after ileocolic resection.

## References

1. Kennedy HJ, Callender ST, Truelove SC, Warner GT. Haematological aspects of life with an ileostomy. Br J Haematol. 1982;52(3):445-54. PMID: 7126481.

2. Kulnigg S, Gasche C. Systematic review: managing anaemia in Crohn's disease. Aliment Pharmacol Ther. 2006;24(11-12):1507-23. PMID: 17206940.

3. Thienpont C, Van Assche G. Endoscopic and medical management of fibrostenotic Crohn's disease. Dig Dis. 2014;32 Suppl 1:35-8. PMID: 25531351.

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_Draft, generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct._