Patients who develop iron-deficiency anemia following bariatric surgery present a distinct clinical challenge. Procedures that alter normal duodenal anatomy can compromise dietary iron absorption, making standard management approaches insufficient in this population.
Iron-deficiency anemia occurring in a patient with a history of bariatric surgery — particularly procedures known to disrupt normal duodenal iron absorption — in the absence of any identifiable source of chronic gastrointestinal blood loss.
Given the anatomical changes from bariatric surgery, the preferred approach involves intravenous iron therapy — particularly in more severe presentations or when oral supplementation proves insufficient.
Full sequencing, specific agents, dosing, and monitoring criteria are in the complete protocol.
DOI: 10.1016/j.cgh.2024.03.046
Intravenous iron therapy should be used in individuals who have undergone bariatric procedures, particularly those that are likely to disrupt normal duodenal iron absorption, and have iron-deficiency anemia with no identifiable source of chronic gastrointestinal blood loss.
Given the anatomic considerations at play after bariatric surgery, IV iron is preferred in patients after bariatric surgery, particularly in more severe cases or when oral supplementation is ineffective.
In one study of women developing ID after Roux-en-Y gastric bypass, a single dose of IV iron was more effective and better tolerated than treatment with either oral ferrous fumarate or ferrous gluconate.
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