• Journal of the Korean Dietetic Association
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• v.16 no.2
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• pp.178-187
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• 2010

This study examined the effects of postoperative medical nutrition therapy on patients who had undergone bariatric surgery. Eighty seven patients who underwent bariatic-surgery at Yeouido St. Mary's Hospital from January 2007 to April 2009 were evaluated. The bariatric surgery patients included 42 Laparoscopic Roux-en Y gastric bypass (LRYGB) and 45 Laparoscopic adjustable gastric banding (LAGB) patients. Weight loss was more significant after LRYGB than after LAGB after 9 months (p<0.05). The LRYGB group was more satisfied with the weight loss (LRYGB 4.4/5.0, LAGB 3.0/5.0 p<0.001). The mean albumin, hemoglobin and hematocrit levels were significantly lower in the LRYGB group than in the LAGB group at the time of discharge (p<0.05~0.001). The GOT/GPT was significantly higher in the LRYGB group at the time of the operation than the LAGB group (p<0.01). The LRYGB group showed significantly lower intakes of total energy, carbohydrates, protein and fat from 1 week after surgery than the LAGB group. Multiple regression showed that the weight change after LRYGB was significantly more associated with the intakes of total energy at 1 week after surgery (p<0.01), SWS (sweets and high-calorie beverages) at 1 and 6 months after surgery (p<0.001), and fat at 3 months after surgery (p<0.01). In addition, LAGB was significantly more associated with the intakes of protein and NLS (non-liquid sweets) at 1 week after surgery (p<0.001, p<0.01), carbohydrate at 1 months after surgery (p<0.01), total energy at 3 months after surgery (p<0.001), HCL (high-calorie liquids) at 6 months after surgery (p<0.05), and fat at 9 months after surgery (p<0.01). These results suggest that continuous-follow-up medical nutrition therapy is needed according to the types of bariatric surgery, particularly during the weight loss phase (the first 1 week to 12 months).

• Journal of the Korean Dietetic Association
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• v.17 no.2
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• pp.206-215
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• 2011

Currently, metabolic surgery (Laparoscopic Roux-en-Y gastric bypass, LRYGB) has an important role and should be recommended as an intervention in the management of obese patients with type 2 diabetes mellitus (T2DM). A successful outcome of surgery requires medical nutrition therapy. Therefore, we performed a retrospective study on 25 patients with T2DM who underwent LRYGB at Yeouido St. Mary's Hospital from October 2008 to May 2010. The patients were followed up for an average of 6 months after surgery (range: 2~19 months). Diabetes was resolved in 80% of the patients. Percentage of excess weight loss was (%EWL) was 56.2%. After surgery, fasting blood sugar (FBS) and HbA1c were significantly reduced (123 mg/dl, A1c 6.7%, P<0.001) and triglyceride was also significantly reduced to 107.6 mg/dl (P<0.05). As diets of the patients progressed from liquid to soft to regular diet, energy, carbohydrates, and fat intakes increased significantly (P<0.001). But protein intake did not change significantly. Nutrient intake of the patients after the surgery was significantly lower than the recommended diet for the non-surgery group. Patients experienced side-effects related to the diets after surgery, including hair-loss (76%), smelly gas (52%), vomiting (48%), etc. A significantly positive correlation was observed between vomiting and FBS (P<0.001). There was a significant relationship between side effects and the amount of nutrient intakes. Therefore, guide patients to a diet progression with treatment to minimize side effects, especially vomiting. And monitor their dietary life to be healthy and not to regain weight until remission of T2DM.