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| Current research landscape on anemia after bariatric and metabolic surgery |
| Guo Peisen, Yu Jiahui, Yang Huawu |
| Gastrointestinal Minimally Invasive Center The Third People's Hospital of Chengdu Chengdu 610031 China |
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Abstract Bariatric and metabolic surgery BMS is an important method for treating obesity and metabolic diseases yet it is
frequently associated with postoperative complications. Anemia is a common complication with its incidence influenced by factors such
as country surgical technique and follow-up duration. The primary cause is impaired nutrient absorption post-surgery leading to
deficiencies in iron vitamin B12
folic acid and copper. Additionally peptic ulcers and menstrual blood loss are significant
contributing factors. Conditions such as refractory iron deficiency anemia thalassemia and Helicobacter pylori infection may further
elevate the risk of postoperative anemia. The treatment of iron deficiency anemia after BMS should adopt a stepwise management
approach. First dietary modification to increase nutrient-rich food intake is recommended. If ineffective oral supplementation should
be initiated. For patients with malabsorption or severe anemia intravenous supplementation can rapidly replenish nutrient
reserves. Clinically individualized plans should be formulated in combination with the patient's surgical method nutritional status and
comorbidities. Concurrently screening and addressing specific underlying causes are crucial to reduce the incidence of postoperative
anemia and optimize treatment outcomes.
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