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Significant weight loss is seen in the first 6 months after surgery. There are concerns that this may reflect sarcopenia, or loss of fat free mass (FFM). We examined changes in body composition after surgery using dual-energy X-ray absorptiometry (DXA). Methods:?Consecutive patients presenting for surgery in 2011 were offered DXA pre-op and 6 months post-op. Patients underwent surgery in the routine fashion, and all received intensive dietetic support in the pre and post-operative period. Results:?Twenty-seven patients (23 female) aged 25�C58, mean weight 121?kg (100�C146), mean BMI 45 (38�C58) were recruited. There were no operative complications. At 6 months the average weight loss was 29.6?kg (17�C44), with mean http://www.selleckchem.com/products/poziotinib-hm781-36b.html %EBWL 52.2 (31�C88). Overall http://www.selleck.cn/products/cobimetinib-gdc-0973-rg7420.html average fat loss was 21?kg and FFM loss was 11.3?kg. The average ratio of fat: FFM loss was 2.1. In older and in diabetic patients this ratio was 1.6. Average fat loss was 9.2?kg in the trunk and 4.5?kg in the legs; muscle loss was 5.6?kg in the trunk and 1.2?kg in the legs. Diabetics lost less fat in the trunk (3.8 vs 10.7?kg). Older patients lost more muscle in the legs (8.2 vs 4.1?kg). Conclusion:?Early weight loss after sleeve gastrectomy can be associated with sarcopenia. This should be considered especially in the older and diabetic populations. Daniel Walker, George Hopkins and Michael Hii Royal Brisbane and Women's Hospital, Queensland Purpose:?Long-term laparoscopic adjustable gastric band (LAGB) complications are very common, most of which require surgical intervention. This is the first study that aims to look at the safety profile of converting the LAGB to Roux-en-Y gastric bypass (RYGB) in patients who have already reduced their BMI to http://www.selleckchem.com/products/ganetespib-sta-9090.html included: indications for conversion; total LAGB complications; complications of the conversion; 1-stage or 2-stage conversion; time from insertion of LAGB to conversion to RYGB; length of hospital stay; gastrojejunostomy technique; and weight loss data. Results:?There was no intraoperative or perioperative morbidity from conversion to RYGB. There were a total of 6 early complications (occurring within 1 month of RYGB); the most common was port site wound infection. There were a total of 8 late complications (occurring at least 1 month post-RYGB); the most common was gastrojejunostomy stricture. Conclusion:?Converting LAGB to RYGB in patients with BMI