The gastric bypass is known as the ‘gold standard’ weight control operation and has been the most frequently performed bariatric surgery procedure worldwide. But did you know that there are different types of gastric bypass surgery? Here’s a brief overview of the differences between the various gastric bypass procedures.
Gastric Bypass Surgery – what is it?
It is the operation to which all other bariatric procedures are compared and it has the best long-term results. A gastric bypass truly is a bypass of the stomach – most of the stomach is bypassed so that food eaten enters a small gastric pouch, then moves to a loop of the small bowel for digestion. Unlike a gastric sleeve, the gastric bypass is reversible.
Let’s explore the various types of gastric bypass and their specific features/differences.
Roux-en-Y Gastric Bypass
Roux-en-Y Gastric Bypass, commonly abbreviated as RYGB, is the most frequently performed gastric bypass procedure. It involves the creation of a small pouch (15-30ml) which can be long or short (but is always narrow) at the upper section of the stomach that is then connected directly to the small intestine. This restricts food intake, releases neuropeptides that suppress appetite and create taste changes, and leads to substantial weight loss.
Single Anastomosis Gastric Bypass/Mini Gastric Bypass/Omega Loop Bypass
Single Anastomosis Gastric Bypass/Mini Gastric Bypass (SAGB/MGB), also known as the Omega Loop Gastric Bypass (OAGB), is a more recent innovation in bariatric surgery. Unlike the RYGB procedure, it involves just one connection between the stomach pouch which is always long and narrow, and the small intestine. This approach leads to weight loss using the same mechanisms as the RYGB while simplifying the procedure. Some surgeons lengthen the small bowel bypass – this may possibly lead to more weight loss but will also increase the chances of persistent diarrhoea and nutrient deficiencies.
Single Anastomosis Duodeno-ileal Bypass (SADI) and Sleeve+ procedures.
Sleeve Gastrectomy with Duodeno-Ileostomy (SADI) is an advanced surgical technique that combines sleeve gastrectomy with a modified digestive pathway. This restricts food intake, limits calorie absorption and leads to substantial weight loss. It is just one of the many Sleeve+ procedures that combine a Laparoscopic Sleeve Gastrectomy with some type of intestinal bypass to try to improve long-term weight loss.
Choosing the Right Gastric Bypass Surgery
Selecting the most suitable type of gastric bypass surgery is an important decision made after a detailed consultation with your bariatric surgeon. Your surgeon will discuss and assess your unique health conditions, weight loss goals and medical history to guide you to the right choice.
Benefits and Risks
Every type of gastric bypass surgery offers common benefits – substantial weight loss, enhanced health and improved overall well-being. However as with any major surgery, it is crucial to be informed about the potential risks and complications of these procedures. An in-depth discussion with your surgeon will equip you with the knowledge required for a well-informed decision.
At Upper GI Surgery, we are committed to guiding you through the decision-making process and ensuring a safe and effective surgical experience. Whether you’re considering Roux-en-Y, Mini Gastric Bypass or SADI, your journey to a healthier, happier you starts with a consultation.
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