Evaluation of Nutritional Deficiency-5 Years and More Outcomes Post Laparoscopic Sleeve Gastrectomy

Abstract

IntroductionNowadays one of the most popular surgical method for treatment of obesity is laparoscopic sleeve gastrectomy (LSG). Data regarding long-term nutritional deficiencies following LSG are scare. We aim to assess the prevalence of nutritional deficiencies 5 years post-LSG.MethodsWe retrospectively reviewed the files of 338 patients who had LSG surgery between June 2012 and June 2019 and had preoperative data and had at least 1 year of surgery. Serum iron, ferritin, folic acid, hemoglobin and vitamin B12 levels during annual visits for six years after LSG were compared with preoperative data. Patients with missing data during follow-up were evaluated as dropout and assessments were made on patients with available data.ResultsA total of 338 patients (83% women), with a baseline BMI 46,87±6,17 kg/m2 were included. In baseline, hypoferritinemia was detected in 19.16% for <15 ng/mL cutoff and in 43.11% for <30 ng/ml cutoff value. Serum iron, vitamin B12 and folate deficiencies were exist in 37.62%, 18.64% and 4.14% of the patients, respectively. We compared this prevalances with postoperative datas and found that ferritin deficiency in follow-up visits was significantly more frequent than the baseline (p<0.001), conversely vitamin B12 deficiency was significantly less common (p<0,05).ConclusionDespite the supplement, our results show that the prevalence of patients with hypoferritinemia after LSG is higher than before surgery. This high prevalence may be associated with factors such as insufficient supplementation, insufficient absorption of oral preparations, and insufficient compliance to treatment.