Ahmed R. H. Ahmed

Learn More
BACKGROUND Internal hernia is a known complication after gastric bypass, especially when performed laparoscopically. The aim of this study was to see when internal hernias occur in relation to weight loss and time course after surgery. Furthermore, we wish to examine the impact of Roux limb positioning ante- versus retrocolic and whether switching to(More)
The trefoil protein TFF3 stimulates invasion and angiogenesis in vitro. To determine whether it has a role in breast tumor metastasis and angiogenesis, its levels were measured by immunohistochemistry in breast tissue with a specific monoclonal antibody raised against human TFF3. TFF3 is expressed in normal breast lobules and ducts, at higher levels in(More)
OBJECTIVES Roux-en-Y gastric bypass (RYGB) has greater efficacy for weight loss in obese patients than gastric banding (BAND) surgery. We hypothesise that this may result from different effects on food hedonics via physiological changes secondary to distinct gut anatomy manipulations. DESIGN We used functional MRI, eating behaviour and hormonal(More)
INTRODUCTION Laparoscopic bariatric surgery is a safe and effective way of treating morbid obesity. However, the operations are technically challenging and training opportunities for junior surgeons are limited. This study aims to assess whether virtual reality (VR) simulation is an effective adjunct for training and assessment of laparoscopic bariatric(More)
BACKGROUND The objective of the present study was to evaluate the cost-utility of bariatric surgery in a lifetime horizon from a Swedish health care payer perspective. METHODS A decision analytic model using the Markov process was developed covering cardiovascular diseases, type 2 diabetes, and surgical complications. Clinical effectiveness and safety(More)
OBJECTIVE To summarize our experience with small-bowel obstructions after laparoscopic Roux-en-Y gastric bypass. DESIGN Retrospective record review. SETTING University-affiliated hospital. PATIENTS One hundred five consecutive patients undergoing surgery for intestinal obstruction after laparoscopic Roux-en-Y gastric bypass between May 24, 2001, and(More)
We report the rare case of a pregnant woman who had undergone Roux-en-Y gastric bypass 8 months previously, and now presented with subacute small bowel obstruction secondary to internal herniation of some of the proximal Roux limb into the lesser sac through the transverse mesocolon rent, which was widely spread apart. At laparoscopy, the hernia contents(More)
Intramural oesophageal dissection is a rare disorder, caused by the interposition of a divisive force between the mucosal and muscular layers of the oesophagus, leading to their separation. We present a case of intramural oesophageal dissection, secondary to the accidental iatrogenic intramural insertion of a nasogastric tube. We discuss the aetiologies,(More)
Obesity causes a significant healthcare burden and has been shown to be an important risk factor in the development of cardiovascular disease, type 2 diabetes, and increasingly chronic kidney disease. Bariatric surgery is the most effective treatment for obesity and has been shown to drastically improve both blood pressure and diabetic control. However, the(More)