Supplementation Adherence and Outcomes Among Pregnant Women After Bariatric Surgery.

Purpose: Most patients undergoing bariatric surgery (BS) are fertile women whose postoperative (post-op) hormonal balance and weight loss increases fertility, frequently leading to pregnancy. This study aims to analyze supplementation adherence of pregnant women after BS and perinatal outcomes.

Materials And Methods: This retrospective study analyzed records from women after BS who consulted nutritionists at least twice during pregnancy.

Diet-induced thermogenesis in postoperatve Roux-en-Y gastric bypass patients with weight regain.

Background: Bariatric surgery has been shown to be an effective treatment for obesity. Changes in energy expenditure, especially through diet-induced thermogenesis (DIT), have been identified as one of the mechanisms to explain this success. However, not all patients are able to maintain healthy postoperative weight loss.

Effects of a very low calorie diet in the preoperative stage of bariatric surgery: a randomized trial.

Background: Preoperative bariatric patients can follow very low calorie diets (VLCD), reducing surgical risks. However, possible advantages of a liquid diet over one of normal consistency are controversial. This study investigated the effect of a liquid VLCD compared with one of normal consistency considering visceral fat (VF) loss and metabolic profile in preoperative clinically severe obese patients.

Comparison of weight loss, food consumption and frequency of vomiting among Roux-en-Y gastric bypass patients with or without constriction ring.

Background: After Roux-en-Y gastric bypass to avoid rapid gastric emptying, dumping syndrome and regained weight due to possible dilation of the gastric pouch, was proposed to place a ring around the gastric pouch.

Aim: To compare weight loss, consumption of macronutrients and the frequency of vomiting among patients who underwent Roux-en-Y gastric bypass with and without the placement of a constriction ring around the pouch.

Method: A retrospective study, in which an analysis of medical records was carried out, collecting data of two groups of patients: those who underwent the operation with the placement of a constriction ring (Ring Group) and those who underwent without the placement of a ring (No-Ring Group).

Diet-induced thermogenesis and respiratory quotient after Roux-en-Y gastric bypass surgery: a prospective study.

Background: Studies in humans and other animals have shown that Roux-en-Y gastric bypass (RYGB) leads to increased energy expenditure (EE). We analyzed several components of EE, such as the respiratory quotient (RQ), resting metabolic rate (RMR), and diet-induced thermogenesis (DIT) among patients before and after RYGB.

Methods: In this prospective clinical study, RMR, DIT, and RQ were measured by indirect calorimetry (IC) in the same patients before and 12 months after RYGB (the preoperative and postoperative time points, respectively).

Validation of ultrasound examination for assessment of the abdominal visceral fat in clinically serious obese patient.

Background: Computerized tomography is the gold-standard for measurement of abdominal visceral fat. However, it is costly and involves submitting patients to ionizing radiation.

Aim: To validate the use of ultrasonography in assessing abdominal visceral fat among clinically serious obese patients of both genders.

Diet-induced thermogenesis and respiratory quotient after Roux-en-Y gastric bypass.

Background: Roux-en-Y gastric bypass (RYGB) surgery is an effective tool for long-term weight loss. Mechanisms underlying the effectiveness of such surgery might result not only from the anatomic changes due to the procedure, but also from favorable changes in energy metabolism. Our objective was to evaluate the respiratory quotient (RQ), resting metabolic rate (RMR), and diet-induced thermogenesis (DIT) among clinically severe obese patients (control group) and patients who had undergone RYGB ≥ 1 year previously.

Energy expenditure before and after Roux-en-Y gastric bypass.

Background: Weight loss may decrease the energy expenditure (EE) because of changes in body composition (BC). The reduction in EE may contribute, in part, to weight regain. Experimental studies in animals indicate that Roux-en-Y Gastric Bypass (RYGB) increases the resting metabolic rate (RMR) when adjusted for body weight (BW).

Metabolic profile of clinically severe obese patients.

Background: Since low basal metabolic rate (BMR) is a risk factor for weight regain, it is important to measure BMR before bariatric surgery. We aimed to evaluate the BMR among clinically severe obese patients preoperatively. We compared it with that of the control group, with predictive formulas and correlated it with body composition.

Dietary protein intake and bariatric surgery patients: a review.

Bariatric surgery, a highly successful treatment for obesity, requires adherence to special dietary recommendations to insure the achievement of weight loss goals and weight maintenance. Postoperative consumption of protein is linked to satiety induction, nutritional status, and weight loss. Hence, we conducted an extensive literature review to identify studies focused on the following: protein and nutritional status; recommendations for dietary protein intake; the effects of protein-rich diets; and associations between dietary protein intake and satiety, weight loss, and body composition.

Correlation of respiratory muscle strength with anthropometric variables of normal-weight and obese women.

Objective: To correlate anthropometric data and respiratory muscle strength (RMS) of normal-weight and obese women.

Methods: The sample consisted of 103 sedentary women, divided into two groups: 57 obese and 46 normal-weight women. Waist circumference (WC) and hip circumference (HC) were measured to calculate the waist-to-hip ratio (WHR), and maximal respiratory pressures (Pmax) were determined using an analog vacuum manometer to ± 300 cm H2O.

Snack-eating patients experience lesser weight loss after Roux-en-Y gastric bypass surgery.

Background: In bariatric surgery patients, weight loss and long-term weight maintenance are related to food intake and eating patterns. To improve the diet orientation in the bariatric surgery postoperative period, we assessed the postoperative eating patterns and related them to weight loss.

Methods: This was a transversal, analytical, and descriptive study that assessed body mass index (BMI) values and percentage of excess weight loss (%EWL) in patients who had undergone Roux-en-Y gastric bypass (RYGBP) surgery.

Relation between carbohydrate intake and weight loss after bariatric surgery.

Background: Weight loss and long-term weight maintenance in bariatric surgery patients are related to maintaining satiety. It can be related to glycemic load (GL) and carbohydrate (g CHO) intake. The aim of this study was to investigate the effect of g CHO and GL and in weight loss on patients who had undergone bariatric surgery.

Nutritional management of weight regain after bariatric surgery.

Background: The aim of this study was to propose dietetic guidelines for the nutritional management of weight regain in Roux-en-Y gastric bypass (RYGB) patients.

Methods: Thirty patients more than 2 years after RYGB surgery were followed up once every 15 days for at least 3 months. We collected from the medical records weight before surgery, excess weight, minimum weight reached 2 years after surgery, and percent of body fat before the operation.