ArticleWorld journal of surgery2022
Anemia After Sleeve Gastrectomy and One-Anastomosis Gastric Bypass: An Investigation Based on the Tehran Obesity Treatment Study (TOTS).
Article in World journal of surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.
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Who cites it
9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- Primary and Revisional One Anastomosis Gastric Bypass: A Systematic Review and GRADE-Based IFSO Position Statement.Obesity surgery · 2026Pooled it
- Iron deficiency anemia after one anastomosis gastric bypass: A systematic review and meta-analysis.Surgical endoscopy · 2025Pooled it
- Long-Term Outcomes of Laparoscopic Sleeve Gastrectomy Versus One-Anastomosis Gastric Bypass: A Retrospective Comparative Study with ≥ 7 Years Follow-Up.Obesity surgery · 2025Article
- Association Between SGLT-2 Inhibitors Use and Incidence of Anemia in Female Patients Undergoing Metabolic and Bariatric Surgery: A Retrospective Study.Obesity surgery · 2025Article
- The impact of preoperative anemia on postoperative anemia and related nutritional abnormalities after bariatric surgery: a multicenter cohort study.Frontiers in nutrition · 2025Article
- Revisional one-anastomosis gastric bypass for failed laparoscopic sleeve gastrectomy.Updates in surgery · 2024Article
- Legacy of the Tehran Obesity Treatment Study: Findings from 10 Years Bariatric Surgery Survey.International journal of endocrinology and metabolism · 2024Review
- A Comparative Analysis of Safety and Efficacy of Bariatric Surgery During the COVID-19 Pandemic and Pre-Pandemic Period: Insights from the Tehran Obesity Treatment Study.World journal of surgery · 2023Article
- Which nutritional prognosis is better? comparison of the three most commonly performed bariatric surgeries: A systematic review and network meta-analysis.Frontiers in surgery · 2022Review
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBariatric surgery has been associated with iron, folate, and vitamin B12 deficiencies, which can lead to anemia. This study compares the incidence of anemia between sleeve gastrectomy (SG) and one-anastomosis gastric bypass (OAGB).
methodsPatients from a prospectively collected database of patients with morbid obesity undergoing a primary bariatric procedure from April 2013 to September 2018 were included. Statistical analysis was performed using the general estimation equation. Patients were followed for 6, 12, 24, and 36 months post-surgery.
resultsThe present study included 2618 patients, of whom 72.3% underwent SG and 27.6% underwent OAGB. The majority of the study population were women (75.7%), and the mean age of the participants was 39.5 ± 11.7 years. At the end of the follow-up, the excess weight loss percentage was 66.15 in the SG group and 75.41 in the OAGB group (P < 0.05). The incidence of anemia at 12-, 24-, and 36-month was 16.2, 19.7, and 24.3% in the SG group and 28.4, 37.6, and 56.5% in the OAGB group, showing significantly higher incidence in the OAGB than the SG group ([Formula: see text] < 0.001). However, there was no significant difference between the SG and OAGB groups regarding the incidence of iron and vitamin B12 deficiency.
conclusionsThe patients undergoing bariatric surgery, especially OAGB, should be closely monitored post-surgery regarding the incidence of anemia, and supplementation in developing countries could be continued even after the first year.
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