ArticleFrontiers in nutrition2025
The impact of preoperative anemia on postoperative anemia and related nutritional abnormalities after bariatric surgery: a multicenter cohort study.
Article in Frontiers in nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Association Between Preoperative Anemia and Incident Chronic Kidney Disease after Metabolic and Bariatric Surgery: a Propensity Score-matched Cohort Study.Obesity surgery · 2026Article
- Development and Validation of a Machine Learning Model for Predicting One-year Anemia After Bariatric Surgery: A Multicenter Study.Obesity surgery · 2026Article
- Elevated preoperative red cell distribution width and incident anemia after metabolic and bariatric surgery: a cohort study.Frontiers in nutrition · 2026Article
- Prevalence and Associations of Preoperative Micronutrient Deficiencies in Bariatric Surgery Candidates with Severe Obesity.Diabetes, metabolic syndrome and obesity : targets and therapy · 2026Article
- Association Between SGLT-2 Inhibitors Use and Incidence of Anemia in Female Patients Undergoing Metabolic and Bariatric Surgery: A Retrospective Study.Obesity surgery · 2025Article
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Abstract
Background: Anemia is a common nutritional complication after bariatric surgery, deteriorating quality of life. Despite 10-30% of patients with obesity being anemic preoperatively, current guidelines do not recommend managing anemia before surgery. This study aims to evaluate the impact of preoperative anemia on postoperative anemia and related nutritional abnormalities. Methods: Patients undergoing bariatric surgery at two bariatric centers from 2017 to 2021 were reviewed and followed for 1 year. Anemia was defined by WHO criteria. Nutritional abnormalities included ferritin, folate, and vitamin B12 deficiency, and low transferrin saturation (TS) levels. Results: A total of 452 patients were included, of whom 53 (11.7%) were diagnosed with anemia before surgery. Patients with preoperative anemia were more likely to develop postoperative anemia (69.8% vs. 34.8%, Conclusion: Preoperative anemia significantly elevates the risk of postoperative anemia, especially moderate to severe cases, and increases the incidence of iron deficiency. It is crucial to actively screen for and correct preoperative anemia to enhance hemoglobin levels and prevent postoperative anemia.
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