Renata Gobato
Universidade Estadual de Campinas-UNICAMP, Brazil
Title: Micronutrient and physiologic parameters before and 6 months after RYGB
Biography
Biography: Renata Gobato
Abstract
Bariatric surgery is considered an effective method for sustained weight loss, but may cause various nutritional complications. The aim of this study was to evaluate the nutritional status of minerals and vitamins, food consumption, and to monitor physiologic parameters in patients with obesity before and 6 months after Roux-en-Y gastric bypass surgery (RYGB). Thirty-six patients who had undergone RYGB were prospectively evaluated before and 6 months after surgery. At each phase their weight, height, body mass index (BMI), Electro Sensor Complex (ES Complex) data, food consumption, and total protein serum levels, albumin, pre- albumin, parathyroid hormone, zinc, B12 vitamin, iron, ferritin, copper, ionic calcium, magnesium, and folic acid were assessed. The mean weight loss from baseline to 6 months after surgery was 35.34±4.82%. Markers of autonomic nervous system balance, stiffness index, standard deviation of normal-to-normal R-R intervals (SDNN), and insulin resistance were also improved. With regard to the micronutrients measured, 34 patients demonstrated some kind of deficiency. There was a high percentage of zinc deficiency in both pre- (55.55%) and postoperative (61.11%) patients, and 33.33% of the patients were deficient in prealbumin post-operatively. The protein intake after 6 months of surgery was below the recommended intake (<70 g/d) for 88.88% of the patients. Conclusion: Despite improvements in the autonomic nervous system balance, stiffness index markers and insulin resistance, we found a high prevalence of hypozincemia at 6 months post- RYGB. Furthermore, supplements protein were needed to maintain an adequate protein intake up to 6 months postsurgery.