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Journal watch - 14/03/13

Development, Feasibility, Validity, and Reliability of a Scale for Objective Assessment of Operative Performance in Laparoscopic Gastric Bypass Surgery
The Bariatric Objective Structured Assessment of Technical Skill scale aims to provide an objective measurement of a surgeon’s skill in performing laparoscopic gastric bypass operations. This study finds that it’s “a feasible to use, reliable, and valid instrument” for measuring a surgeon’s ability to use gastric bypass, and suggests that it may be used in the future for surgeon certification. (Full text)

Robotically Assisted Revision of Bariatric Surgeries Is Safe and Effective to Achieve Further Weight Loss.
Performing robotic surgery is technically demanding, particularly for revisional operations. This paper says that while it can be performed safely and result in good weight loss, the high rate of postoperative complications is “an issue that warrants further attention”. (Full text)

Attitudes towards bariatric surgery in the general public.
The growing body of evidence about the effectiveness of bariatric surgery, particularly in comparison to other obesity interventions, is not getting through to the public, says this paper. Most people surveyed said they believed lifestyle-based interventions are most effective; 72% of those asked would not recommend weight-loss surgery or undergo it themselves. The paper recommends a greater drive towards presenting evidence-based information on bariatric surgery to the public. (Full text)

Alterations in gut hormones after laparoscopic sleeve gastrectomy: a prospective clinical and laboratory investigational study.
Investigating gut hormone levels after sleeve gastrectomy, this study found that fasting and postprandial levels of ghrelin, amylin, and leptin were all significantly reduced, while PYY and GLP-1 hormones increased markedly. The authors conclude that their findings show sleeve gastrectomy could potentially be more than just a restrictive operation. (Full text)

The Longer-Term Effects of Roux-en-Y Gastric Bypass Surgery on Sodium Excretion.
A year after gastric bypass, says this study, sodium excretion dropped from a high of 195 mmol/day to 160 mmol/day. The authors conclude that this 18% drop is not sufficient by itself to explain the “profound” drop in blood pressure usually seen after gastric bypass. (Full text)