ArticleObesity surgery2021
Vitamin D in the Preoperative and Postoperative Periods of Bariatric Surgery.
Article in Obesity surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Vitamin D status and supplementation before and after Bariatric Surgery: Recommendations based on a systematic review and meta-analysis.Reviews in endocrine & metabolic disorders · 2023Pooled it
- Baseline 25(OH)D level is a prognostic indicator for bariatric surgery readmission: a matched retrospective cohort study.Frontiers in nutrition · 2024Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo evaluate the evolution of vitamin D levels (25OHD) in patients submitted to bariatric surgery.
methodsRetrospective study, conducted with patients submitted to bariatric surgery between 2013 and 2018, in a city in the Northeast of Brazil. The variations of 25OHD, weight, body mass index (BMI), and total lymphocyte count were analyzed and compared for preoperative and postoperative periods of 6 and 12 months. Vitamin D levels below 30ng/mL were considered insufficient. Analysis of variance (ANOVA) was used for repeated measures, followed by Bonferroni post hoc test. To identify variables related to vitamin D, Pearson's correlation test and linear regression analysis were used. A significance level of 5% (p <0.05) was adopted.
resultsA total of 646 patients were evaluated, with a mean age of 41.3 ± 10.8 years. Most of the patients were female (75%) and had 25OHD insufficiency in the preoperative period (79.1%). It was found that in the postoperative period there was an increase in vitamin D levels. Linear regression showed that the variation in vitamin D is negatively influenced by BMI in the preoperative period (β = -0.20; p = 0.02) and by BMI (β = -0.38; p <0.001) and by age (β = -0.08; p = 0.02) in the 6-month postoperative period.
conclusionThere was an increase in vitamin D levels in the postoperative period. BMI proved to be a negative factor for obtaining adequate levels of vitamin D in the preoperative period and in the 6-month postoperative period.
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