Controlling Nutritional Status (CONUT) Score and Micronutrient Deficiency in Bariatric Patients: Midterm Outcomes of Roux-en-Y Gastric Bypass Versus One Anastomosis Gastric Bypass/Mini Gastric Bypass

Background Two of the most common bariatric procedures performed worldwide are Roux-en-Y gastric bypass (RYGB) and one anastomosis gastric bypass (OAGB). Comparative data regarding nutritional status are lacking and no previous study focus on malnutrition according to a validated score. Methods Retr...

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Published in:	Obesity surgery 2021-08, Vol.31 (8), p.3715-3726
Main Authors:	Voglino, Costantino, Tirone, Andrea, Ciuoli, Cristina, Benenati, Nicoletta, Bufano, Annalisa, Croce, Federica, Gaggelli, Ilaria, Vuolo, Maria Laura, Badalucco, Simona, Berardi, Giovanna, Cuomo, Roberto, Castagna, Maria Grazia, Vuolo, Giuseppe
Format:	Article
Language:	eng
Subjects:	Anastomosis, Roux-en-Y Diabetes Mellitus, Type 2 - epidemiology Gastric Bypass - adverse effects Gastrointestinal surgery Humans Malnutrition Medicine Medicine & Public Health Micronutrients Nutritional Status Obesity, Morbid - surgery Original Contributions Retrospective Studies Surgery
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Summary:	Background Two of the most common bariatric procedures performed worldwide are Roux-en-Y gastric bypass (RYGB) and one anastomosis gastric bypass (OAGB). Comparative data regarding nutritional status are lacking and no previous study focus on malnutrition according to a validated score. Methods Retrospective data from a single institution were reviewed. Anthropometric variables and nutritional data were assessed. The primary aim was to analyze and compare the nutritional status before and 3 years after RYGB vs OAGB using the controlling nutritional status (CONUT) score. The incidence of micronutrient deficiency and the remission of comorbidities in each group were defined as secondary outcomes. Results Fifty-seven patients in each arm were enrolled. A 3-year mild malnutrition (CONUT score 2–3) was found in 38% and 37.05% in the RYGB and OAGB groups, respectively (p > 0.05). In terms of percentage of total weight loss (%TWL) and percentage of adjustable weight loss (%AWL), no differences were found between OAGB and RYGB groups. OAGB and RYGB patients had similar vitamin deficiencies. Anemia, hypoproteinemia, hypoalbuminemia, and hypocalcemia were comparable between groups. At 3-year follow-up, total protein and albumin values were similar between arms while prealbumin deficit was more frequent after OAGB than after RYGB. The rate of type 2 diabetes (87.5% in OAGB and 92% in RYGB), arterial hypertension (51.6% in OAGB and 58.3% in RYGB), and dyslipidemia (69.7% in OAGB and 78.6% in RYGB) remission was not significantly different between the two groups. Conclusions Postoperative CONUT score, micronutrient deficiency, comorbidity remission, and improvement of anthropometric parameters 3 years postoperatively were comparable between RYGB and OAGB groups. Graphical abstract
ISSN:	0960-8923 1708-0428