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Nutritional Assessment and Preparation for Adult Bariatric Surgery Candidates: Clinical Practice.

ABSTRACT: Bariatric surgery (BS) has proven to be highly efficacious in the treatment of obesity and its comorbidities. However, careful patient selection is critical for its success. Thus, patients should undergo medical, behavioral, and nutritional assessment by a multidisciplinary team. From the nutritional point of view, BS candidates should undergo nutritional assessment, preparation, and education by a registered dietitian in the preoperative period. Currently, detailed specified and comprehensive information on these topics is lacking. The present narrative review aimed to summarize the available literature concerning both the preoperative nutritional assessment components and the preoperative nutritional preparation and education components of patients planning to undergo BS. Current literature indicates that proper management before BS should include a comprehensive nutritional assessment, in which it is advisable to perform a clinical interview to assess patients' medical background, weight management history, eating patterns and pathologies, oral health, physical activity habits, nutritional status, supplementation usage, BS knowledge, surgery expectations and anthropometric measurements. Nutritional preparation and educational strategies should include an individualized preoperative weight-loss nutrition program, improvement of glycemic control, micronutrients deficiencies correction, eating and lifestyle habits adaptation, physical activity initiation, and strengthening knowledge on obesity and BS. At this stage, more well-designed intervention and long-term cohort studies are needed in order to formulate uniform evidence-based nutritional guidelines for patients who plan to undergo BS, including populations at higher nutritional risk. Moreover, postoperative outcomes of presurgical nutritional intervention programs should be studied.

SUBMITTER: Sherf-Dagan S

PROVIDER: S-EPMC8262552 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Background & aimsLittle is known about prevalence and risk factors for nutritional deficiencies in adolescents after metabolic bariatric surgery. We performed a 5-year prospective cohort study of these.MethodsAdolescents who had Roux-en-Y gastric bypass (RYGB, n = 161) or vertical sleeve gastrectomy (VSG, n = 67) were enrolled at 5 tertiary-care centers from March 2007 through February 2012. The final analysis cohort included 226 participants (161 who had RYGB and 65 who had VSG). We measured serum levels of ferritin; red blood cell folate; vitamins A, D, B1, B12; and parathyroid hormone at baseline and annually for 5 years. General linear mixed models were used to examine changes over time and identify factors associated with nutritional deficiencies.ResultsThe participants were 75% female and 72% white, with a mean age of 16.5 ± 1.6 years and mean body mass index of 52.7 ± 9.4 kg/m2 at surgery. Mean body mass index decreased 23% at 5 years, and did not differ significantly between procedures. After RYGB, but not VSG, serum concentrations of vitamin B12 significantly decreased whereas serum levels of transferrin and parathyroid hormone increased. Ferritin levels decreased significantly after both procedures. Hypo-ferritinemia was observed in 2.5% of patients before RYGB and 71% at 5 y after RYGB (P < .0001), and 11% of patients before VSG and 45% 5 y after VSG (P = .002). No significant changes in serum levels of folate or vitamins A, B1, or D were found between baseline and 5 y after either procedure. By 5 y, 59% of RYGB and 27% of VSG recipients had 2 or more nutritional deficiencies. Risk factors associated with specific deficiencies included surgery type, female sex, black race, supplementation intake, weight regain, and for females, pregnancy.ConclusionsIn a prospective study of adolescents who underwent RYGB or VSG, we observed nutritional deficiencies by 5 y after the procedures-particularly in iron and B12 after RYGB. Ongoing nutrient monitoring and supplementation are recommended for all patients, but surgery type, supplementation intake, sex, and race might affect risk. (Clinical trial registration: Adolescent Bariatrics: Assessing Health Benefits and Risk [also known as Teen-Longitudinal Assessment of Bariatric Surgery (Teen-LABS)], NCT00474318.).

Project description:BackgroundDepression and binge eating disorder (BED) are prevalent among bariatric surgery candidates. Depression subtypes may be differentially related to obesity, such that the atypical subtype predicts poorer outcomes. However, no research has examined depression subtypes, BED, and weight loss in bariatric candidates.ObjectiveTo examine whether presurgical atypical depressive symptoms, compared with no depressive and melancholic depressive symptoms, were associated with higher rates of presurgical BED, binge eating severity, and poorer postsurgical weight loss trajectories among bariatric candidates.SettingAn outpatient Midwest bariatric clinic.MethodsParticipants were 345 adults (aged 46.27 ± 12.78 yr, 76% female; body mass index = 49.84 ± 8.51 kg/m2) who received a presurgical evaluation. Depression subtypes (melancholic, atypical, and no depressive symptoms) were categorized using the Beck Depression Inventory-II. BED diagnosis and severity were evaluated using the Eating Disorder Diagnostic Scale and Binge Eating Scale, respectively. Weight loss trajectories were calculated as percent total weight loss postsurgery.ResultsUsing no depression as the referent, participants reporting melancholic symptoms (odds ratio = 7.60, P < .001 confidence interval95 [2.59-22.28]) and atypical symptoms (odds ratio = 10.11, P < .01 confidence interval95 [2.69-37.94]) were more likely to meet criteria for BED. Patients with atypical depressive symptoms exhibited the highest binge eating severity scores (mean = 23.03). Depression subtypes did not predict percent total weight loss trajectories within 18-months postbariatric surgery.ConclusionsPatients reporting preoperative atypical depressive symptoms were more likely to meet criteria for co-morbid BED diagnosis and have greater binge eating severity but did not have poorer weight loss within 18 months postsurgery. Future studies with longer-term follow-up and corresponding measures of postsurgical depression and binge eating pathology are warranted.

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Nutritional Assessment and Preparation for Adult Bariatric Surgery Candidates: Clinical Practice.

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