Mini gastric bypass (MGB) is a simpler, safer modification of the loop gastric bypass and is performed by laparoscopic surgeons. Technically easier than a RYGB, MGB is gaining acceptance worldwide.

What is Mini Gastric Bypass?

MGB involves dividing a small part of the stomach and advancing it towards the His angle for anastomosis with the intestine. This procedure connects the stomach to a part of the intestine about 200 cm away; the remaining stomach stays closed.

Mini Gastric Bypass Mini gastric bypass combines restrictive and malabsorptive properties for weight loss. Hormonal changes reduce hunger, while the stomach-intestine connection can cause unpleasant symptoms. These symptoms, known as “Dumping Syndrome” when consuming high-sugar foods, thus require caution. The length of the digestive limb is critical for balancing weight loss and malabsorption. However, most surgeons prefer not to extend the digestive limb beyond 150 cm.

Mini Gastrik Bypass

What are the advantages?

  1. Effective Weight Loss: MGB offers effective and lasting weight loss, often being a successful option for patients struggling with obesity.
  2. Reduced Hospital Stay: Requires a shorter hospital stay compared to other obesity surgeries.
  3. Lower Risk of Complications: MGB surgery is generally considered a procedure with a low risk of complications.
  4. Metabolic Benefits: MGB can be effective in controlling metabolic diseases like type 2 diabetes, and in some cases, can completely eliminate them.
  5. Larger Stomach Capacity: Compared to some other stomach reduction procedures, MGB allows for a larger stomach capacity, offering more flexibility in eating for some patients.
  6. Nutrient Absorption Maintained: MGB relatively well preserves nutrient absorption, helping patients to adequately intake essential nutrients.
  7. Caloric Restriction: MGB limits calorie intake, contributing to weight loss.
  8. Shorter Surgery Time: MGB surgery is generally completed in a shorter duration compared to some other obesity surgeries.

The ghrelin hormone increases appetite, and gastric bypass suppresses it, contributing to loss of appetite. Post-bypass, hormones like GLP-1 and cholecystokinin support the lack of hunger. Bile reflux, especially in those with valve disorders, can decrease life quality. Revision may be necessary. The expansion of the connection reduces the procedure’s restrictiveness and can lead to weight gain.