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Zimmermann, Julia; Kauke, Teresa; Kufeldt, Johannes; Thasler, Wolfgang E.; Werner, Jens; Rittler, Peter (2018): Is Vitamin Supplementation Necessary After Sleeve Gastrectomy? Retrospective Analysis of Nutritional Status, Diabetes Mellitus, and Weight Loss. In: Bariatric Surgical Practice and Patient Care, Vol. 13, No. 3: pp. 137-142
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Purpose: The laparoscopic sleeve gastrectomy (SG) is an effective stand-alone procedure in the surgical treatment of overweight. The present study focused on the treatment of patients with SG and documented changes regarding the nutritional status, improvement of HbA1c, and postoperative weight loss. Methods: One hundred fifty-seven patients were subject to an SG. The development of vitamin D-, B1-, and B12-levels, as well as HbA1c, weight, body mass index, and percentage of excess weight loss (%EWL), was obtained postoperatively. Results: The preoperative deficit of vitamin D (15.44ng/L) was eliminated after SG and increased up to 27.85ng/L. Vitamin B12 showed no significant variance at any time. Vitamin B1 and B12 were based in the reference range during the whole study. The study showed a significant %EWL in the first 12 months (maximum: 52.47%) with a mild weight regain after 24 and 36 months. HbA1c showed a decrease from 6.07% to 5.47% after 12 months and an increase up to 5.57% thereafter. Conclusions: Apart from a few exceptions, vitamin supplementation is not obligatorily necessary after SG. SG improves the HbA1c in correlation to the weight loss and reaches a maximum weight loss in the first postoperative year with a trend of weight gain thereafter.