Dr George Kalogeropoulos

The sleeve gastrectomy is the most common bariatric procedure, involving the removal of 80% of the stomach to create a narrow gastric tube that restricts food intake and reduces hunger hormones (ghrelin).

The Roux-en-Y Gastric Bypass (RYGB) is a well-established bariatric procedure that creates a small stomach pouch and reroutes the small intestine, significantly reducing food intake and calorie absorption. It has marked improvement in obesity-related comorbidities, specifically Type 2 Diabetes, PCOS and Sleep apnoea.

The Single Anastomosis/Mini Gastric Bypass (MGB) is a simplified version of the RYGB, involving the creation of a long, narrow stomach pouch and a single connection to a loop of the small intestine, reducing food intake and calorie absorption. It is generally considered less complex than the traditional RYGB with decreased risks of bowel obstructions and internal hernias.

SADI-S is probably the most powerful weight loss procedure suitable for both primary and revisionary cases following sleeve gastrectomy. It consists of two steps: initially performing a sleeve gastrectomy, followed by a small bowel bypass to decrease nutrient absorption and alter hormones that promote weight gain. This procedure leads to the highest weight loss which is often sustained over time.

Intestinal Bipartition (IB) is a relatively new type of bariatric surgery that involves dividing the small intestine into two separate pathways. One pathway is much shorter than the other. Food is routed through both pathways, but the shorter pathway allows for less absorption of nutrients and calories. This procedure shows promise for people with type 2 diabetes who are obese or overweight.

Revisional bariatric surgery is performed for insufficient weight loss or weight regain, complications from initial surgery such as chronic reflux or band slippage, inadequate resolution of co-morbidities, and addressing anatomical changes over time. It is a complex procedure with higher risks.