Anemia After Sleeve Gastrectomy and One‐Anastomosis Gastric Bypass: An Investigation Based on the Tehran Obesity Treatment Study (TOTS)

Barzin, Maryam; Tasdighi, Erfan; Ebadinejad, Amir; Khalaj, Alireza; Mahdavi, Maryam; Hosseinpanah, Farhad

doi:10.1007/s00268-022-06528-7

Cited by 5 publications

(10 citation statements)

References 44 publications

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“…The study characteristics are presented in Table 1. Two included studies 34,45 were RCTs, 10 were prospective cohort studies, 21,24,27–29,31,35,36,40,49 and 19 were retrospective cohort studies 12,13,22,23,26,30,32,33,37–39,41–44,46–48 . Twenty‐eight studies 12,13,21–37,40–48 were single‐center studies, while three studies 38,39,49 were multicenter studies.…”

Section: Resultsmentioning

confidence: 99%

“…Two included studies 34,45 were RCTs, 10 were prospective cohort studies, 21,24,27–29,31,35,36,40,49 and 19 were retrospective cohort studies 12,13,22,23,26,30,32,33,37–39,41–44,46–48 . Twenty‐eight studies 12,13,21–37,40–48 were single‐center studies, while three studies 38,39,49 were multicenter studies. The majority of studies 12,13,21–29,31,33,35,37–45,47–49 were conducted in Europe and Asia, with the number of patients ranging from 30 to 1942.…”

Section: Resultsmentioning

confidence: 99%

“…The majority of studies 12,13,[21][22][23][24][25][26][27][28][29]31,33,35,[37][38][39][40][41][42][43][44][45][47][48][49] were conducted in Europe and Asia, with the number of patients ranging from 30 to 1942.…”

Section: Study Characteristicsmentioning

confidence: 99%

“…The baseline levels of serum iron, ferritin, folate, and VB12 are shown in Table 2, and their reference range is shown in Table S3. Twentyone studies 24,25,[29][30][31][32][33]35,[37][38][39][40][41][42][43][44][45][46][47][48][49] recommended prophylactic iron supplementations, 22 studies 21,[23][24][25][29][30][31][32][33]35,37,[39][40][41][42][43][44][45][46][47][48][49] recommended prophylactic folate supplementations, and 22 studies 21,[23][24][25][29]…”

Section: Nutrient Data and Supplementation Strategymentioning

confidence: 99%

“…Twenty-seven studies 12,13,21,[23][24][25][27][28][29][30][31][32][33][34][35][36][37][40][41][42][43][44][45][46][47][48][49] involving 7488 patients reported the prevalence of anemia after SG (Figure 2). The overall estimate of the prevalence was 7% (95% CI [4,10], I 2 = 97%) at baseline.…”

Section: Prevalence Of Anemiamentioning

confidence: 99%

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Prevalence of anemia and related nutrient deficiencies after sleeve gastrectomy: A systematic review and meta‐analysis

et al. 2022

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Summary This study aimed to investigate the prevalence of anemia and related nutrient deficiencies after sleeve gastrectomy (SG). Four online databases were searched for relevant articles. Thirty‐one studies with 7639 patients were included in the meta‐analysis. The pooled anemia prevalence was 7%, 6%, 9%, 10%, 12%, 25%, 20%, and 18% at baseline, 3 months, 6 months, 12 months, 24 months, 36 months, 48 months, and 60 months, respectively. Although the prevalence of vitamin B12 and folate deficiencies remained low postoperatively, the prevalence of ferritin deficiency steadily increased from 6% at baseline to 27% at 60 months. The prevalence of serum iron deficiency decreased from 13% at baseline to 6% at 24 months and increased to 20% at 60 months. Anemia and ferritin deficiency were strongly correlated (Pearson correlation coefficient = 0.774, p = 0.041). Subgroup analysis suggested that age ≤40 years, preoperative anemia, and insufficient iron supplementations were high‐risk factors for postoperative anemia. SG is associated with an increased risk of anemia and decreased iron storage over long‐term observation. Routine iron supplementations may reduce anemia after SG; however, the dosages recommended by current guidelines may be insufficient. More strict monitoring schedules and supplementation strategies should be established for the timely detection and management of postoperative anemia.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Study Characteristicsmentioning

confidence: 99%

Section: Nutrient Data and Supplementation Strategymentioning

confidence: 99%

Section: Prevalence Of Anemiamentioning

confidence: 99%

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Prevalence of anemia and related nutrient deficiencies after sleeve gastrectomy: A systematic review and meta‐analysis

et al. 2022

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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

Ebadinejad,

Ghazy,

Hosseinpanah

et al. 2023

World j. surg.

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Background The COVID-19 pandemic has raised global health concerns and posed challenges for postoperative follow-up care for patients undergoing bariatric surgery due to social distancing rules. Methods This was a cohort study on patients with morbid obesity who underwent bariatric surgery and had been enrolled in Tehran Obesity Treatment Study. Patients who had surgery between March 2020 and March 2021 were classified as those undergoing the procedure amid the COVID-19 pandemic, while those who had surgery between March 2017 and March 2018 were categorized as the pre-pandemic group. ResultsThe study included 982 patients in the pre-COVID-19 pandemic group and 602 patients in the COVID-19 pandemic group, with mean ages of 39.61 and 39.51 years, respectively. After adjusting for preoperative body mass index (BMI) and surgery type, the patients who underwent surgery during the COVID-19 pandemic demonstrated comparable results to the pre-COVID-19 group in terms of total weight loss %, excess weight loss %, BMI reduction, and fat mass reduction during the 12-month postoperative period. Additionally, the rate of complications with a gradeCIII based on the Clavien-Dindo classification was significantly lower in patients who underwent surgery during the COVID-19 pandemic. Notably, there were no deaths reported in either group. Conclusion Despite social isolation and unfavorable lifestyle modifications, bariatric surgery-induced weight loss after one year was the same in patients undergoing the procedure either before or after the implementation of social distancing measures. More research is needed to analyze the influence of the COVID-19 pandemic on the long-term outcomes of bariatric surgery.

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Change in Mineral Status After Bariatric Surgery: a Meta-analysis

Cao,

Liang,

et al. 2023

OBES SURG

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Anemia After Sleeve Gastrectomy and One‐Anastomosis Gastric Bypass: An Investigation Based on the Tehran Obesity Treatment Study (TOTS)

Cited by 5 publications

References 44 publications

Prevalence of anemia and related nutrient deficiencies after sleeve gastrectomy: A systematic review and meta‐analysis

Prevalence of anemia and related nutrient deficiencies after sleeve gastrectomy: A systematic review and meta‐analysis

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

Change in Mineral Status After Bariatric Surgery: a Meta-analysis

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