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Obesity Surgery [journal]
- Clinical Impact of a 6-Week Preoperative Very Low Calorie Diet on Body Weight and Liver Size in Morbidly Obese Patients. [JOURNAL ARTICLE]
- Obes Surg 2013 May 17.
BACKGROUND:Laparoscopic Roux-en-Y gastric bypass (LRYGB) may be a technically challenging surgical technique when features such as thick abdominal wall and increased liver volume are present. Very low calorie diets in the form of liquid meal replacements given 6 weeks prior to surgery have proven to decrease liver volume. The aim of our study was to assess the effect of a 6-week preoperative low calorie/regular diet on liver volume and body weight in morbidly obese patients.
METHODS:A pilot study was carried out in 20 morbidly obese patients with an 800-kcal diet for 6 weeks. They were followed weekly to ensure proper compliance. CT scan was used for determining liver volume every 2 weeks in order to assess the impact of the diet. Baseline values were taken as controls for every patient as tied measures. Statistical analysis was suitable to variable scaling and performed using SPSS v. 20.0. Parametric and non-parametric test for tied measures were done. Any p value lesser than 0.05 or 5 % was considered as statistically significant.
RESULTS:Twenty patients adhered to the diet intervention for 6 weeks prior to LRYGB. Median ± SD age was 34.5 ± 11.5 years and 17 were female (85 %). Heart rate and blood pressure did not vary across the study. Initial median ± SD BMI was 46.02 ± 5.29 kg/m(2) (range 38.7-54.8). Repeated and tied measurements across the 6 weeks of treatment within individuals resulted statistically significant for reducing BMI (p < 0.0001). CT scan assessed liver volume initially as a control and in weeks 2, 4 and 6. Parametric and non-parametric assessment for multiple measurements also showed statistical significance among these values (p < 0.0001). Diet tolerability was additionally evaluated with a questionnaire showing more than 80 % of acceptability with discrete rates of nausea (15 %) and diarrhoea (15 %).
CONCLUSIONS:Based on our results, we demonstrated that a very low calorie diet with home ingredients is capable for effectively reducing body weight and liver size in morbidly obese patients. This relatively short intervention (4 to 6 weeks) was accomplished in all our patients with a high frequency of compliance and a low rate of secondary effects.
- Experience of Excess Skin and Desire for Body Contouring Surgery in Post-bariatric Patients. [JOURNAL ARTICLE]
- Obes Surg 2013 May 11.
BACKGROUND:This study was done to analyze the problems of post-bariatric patients with excess skin and to determine their interest in body contouring surgery. The self-administered Sahlgrenska Excess Skin Questionnaire (SESQ) was used together with a study-specific questionnaire.
METHODS:The patients who were operated with bariatric surgery at Sahlgrenska University Hospital between 1999 and 2008 were identified and sent the SESQ and a study-specific questionnaire.
RESULTS:The response rate was 65 % (23 % men). The most common problem in both men and women was the feeling of having an unattractive body (91 and 67 %, respectively). The most frequently reported sites of excess skin were the upper arms in women (91 %) and the abdomen in men (78 %). In both women and men, excess skin on the abdomen was reported to cause the most discomfort (median 7 and 3, respectively, on a scale from 0 to 10). Women reported significantly more problems, discomfort, and amount of excess skin (p < 0.05) than men. There was a strong correlation between the amount of excess skin and the degree of discomfort for all body parts. Seventeen percent of the responders had been operated with body contouring surgery of one body part and 5 % of two or more. Fourteen percent desired body contouring surgery of one body part and 61 % of two or more.
CONCLUSIONS:Most post-bariatric patients, but women in particular, experience significant problems of excess skin and request body contouring surgery.
- Response to Hajnal et al. [JOURNAL ARTICLE]
- Obes Surg 2013 May 7.
- Bariatric Surgery Outcomes in a European Centre of Excellence (CoE). [JOURNAL ARTICLE]
- Obes Surg 2013 May 5.
Bariatric Surgery Centres of Excellence have been promoted by the International Federation for the Surgery of Obesity and Metabolic Disorders European Chapter to improve outcomes and security of patients. A retrospective analysis of our prospective database has been performed. Between May 2001 and September 2012, we operated on 690 patients, first with open gastric bypass (2001-2005), then laparoscopy (2006-2009), introduced robotics and finally the Centre of Excellence period (2012). Complication rate was 18.9 % in the first period and 3 % in the last. We reoperated on 9 % of patients in two early periods and none in the last. Mortality rate was 2, 0.85, 0.47 and 0 % in the four periods. Teams that are just at the beginning of their experience in bariatric surgery in order to avoid complications and deal with better long-term results.
- Warfarin Users Prone to Coagulopathy in First 30 Days After Hospital Discharge from Gastric Bypass. [JOURNAL ARTICLE]
- Obes Surg 2013 May 6.
BACKGROUND:Lehigh Valley Health Network (LVHN), a nonprofit tertiary care facility in Allentown, Pennsylvania, is an accredited American College of Surgeons Bariatric Surgery Center Network (ACSBSCN) Level 1 site performing 400+ bariatric procedures annually. Bariatric data submission began in April 2008. Complication review revealed that approximately 17 % of patients on chronic anticoagulation (warfarin) therapy preoperatively were readmitted with supratherapeutic international normalized ratios (INRs), postsurgical bleeding, anastomotic ulcer, or other intraluminal hemorrhage. Opinion level recommendations have been published regarding the adjustment of warfarin dosages post-bariatric procedures with no widespread consensus. Case series have been published detailing perioperative hemorrhage risk for bariatric patients on preoperative anticoagulation. Little data of post-discharge hemorrhage rates have been published. With increasing numbers of bariatric surgical procedures performed annually, there is a potential for developing serious coagulopathic complications in those patients who resume their anticoagulation therapy postoperatively.
METHODS:Retrospective review of LVHN data from the ACSBSCN database was analyzed for 30-day readmissions due to documented extra- or intraluminal hemorrhage with INR and coagulopathy. Follow-up INR and warfarin doses were collected up to 6 months postoperatively.
RESULTS:Over a 3-year period, 38 patients undergoing bariatric procedures were identified as being on preoperative warfarin therapy. Six of 38 developed hemorrhage within 30 days. Two patients presented beyond 30 days with bleeding. Supratherapeutic INR was present in five of six readmitted patients. Mean INR was 5.8. Warfarin sensitivity was present in a statistically significant higher number of patients within 30 days of surgery. After 30 days, a resistance to warfarin was demonstrated.
CONCLUSIONS:Bariatric surgery patients taking warfarin are prone to coagulopathy in the early post-op period requiring vigilant monitoring to prevent supratherapeutic INR and corresponding risk of hemorrhage.
- Moderate Physical Activity as Predictor of Weight Loss After Bariatric Surgery. [JOURNAL ARTICLE]
- Obes Surg 2013 May 1.
BACKGROUND:The prevalence of obesity is 33 % and is expected to reach 50 % based on current US trends. Bariatric surgery is effective in producing long-term weight loss, yet it requires adherence to the recommended diet and physical activity. This study assessed whether the short-form International Physical Activity Questionnaire (IPAQ-SF) data at 1 year postbariatric surgery would correlate with success (defined as more than 50 % excess weight loss (EWL)) after surgery.
METHODS:The IPAQ-SF questionnaire provided assessment of subjects' activity level over the last 7 days, in four separate activity domains: vigorous, moderate, walking, and sitting.
RESULTS:Questionnaires were completed and collected at the 1-year postbariatric surgery group visit. Then, 118 subjects who completed the IPAQ-SF were subdivided based on loss of greater than or less than 50 % of their excess weight, which in turn was based on ideal body weight. In subjects with ≥50% EWL (n = 49), we noted 67.1 ± 8.8 % EWL versus 33.2 ± 9.4 % in those with <50 % EWL (n = 69) (p < 0.001). The ≥50 % EWL group performed 420 (216-960) min of total activity per week versus 300 (172-718) min for the <50 % group. The ≥50 % EWL group engaged in 120 (8-180) min of vigorous activity, 150 (28-330) min of moderate activity, and 233 (109-512) min of walking versus 40 (0-255), 68 (0-204), and 188 (83-341) min, respectively, for the <50 % EWL group.
CONCLUSIONS:Physical activity does correlate with success after bariatric surgery, as measured by excess weight loss (≥50 % EWL).
- Duodenal-Jejunal Bypass Improves Glucose Metabolism and Adipokine Expression Independently of Weight Loss in a Diabetic Rat Model. [JOURNAL ARTICLE]
- Obes Surg 2013 May 1.
BACKGROUND:There is accumulating evidence that adipokines lead to a proinflammatory state, which plays crucial roles in insulin resistance and development of type 2 diabetes mellitus (T2DM). Previous studies demonstrated that weight loss after bariatric surgery is accompanied by a suppression of the proinflammatory state. However, the effect of bariatric surgery on adipokine expression beyond weight loss is still elusive. The aim of this study was to investigate the effect of duodenal-jejunal bypass (DJB) on glucose homeostasis and adipokine expression independently of weight loss.
METHODS:A T2DM rat model was developed by a high-fat diet and low dose of streptozotocin. Twenty-one diabetic rats and 10 age-matched SD rats were randomly assigned to the DJB group, sham-DJB (S-DJB) group, and control group. For 12 weeks after surgery, their body weight, food intake, glucose homeostasis, lipid parameters, serum adipokine levels, and adipokine gene expression in the mesocolon adipose tissue were measured.
RESULTS:Compared to the S-DJB group, DJB induced significant and sustained glycemic control with improved insulin sensitivity and glucose tolerance independently of weight loss. DJB improved the lipid metabolism by decreasing fasting free fatty acids and triglycerides. Serum leptin and IL-6 significantly decreased 12 weeks after DJB, whereas adiponectin increased and TNF-α remained unchanged. The mRNA expression levels of leptin, TNF-α, and IL-6 decreased, whereas adiponectin increased in the mesocolon adipose tissue.
CONCLUSION:DJB reduced the proinflammatory adipokines and increased the anti-inflammatory adipokines independently of weight loss, which may contribute to the improvement of insulin sensitivity.
- Pre-operative Weight Loss Does Not Predict Weight Loss Following Laparoscopic Adjustable Gastric Banding. [JOURNAL ARTICLE]
- Obes Surg 2013 May 2.