Mini Gastric Bypass

Mini Gastric Bypass (MGB) is a reversible procedure that reduces the size of the stomach pouch by bypassing a section of the small intestine.

How it works 

Mini Gastric Bypass surgery was developed as a simpler alternative to the Roux-en-Y Gastric Bypass. The procedure is a less invasive gastric bypass procedure. The surgeon creates a long narrow stomach pouch and connects the new stomach pouch to the side of the small intestine, bypassing a length of intestine. This procedure is reversible. 

Is it right for me? 

Mini Gastric Bypass surgery is minimally invasive with lower surgical risks and less surgical pain than the Roux-en-Y Gastric Bypass. The procedure is also easier to reverse and convert. Long-term weight loss results are very good. The hormone ghrelin is decreased making you feel less hungry than usual and feeling fuller after smaller meal portions.

If you are considering a mini gastric bypass is important to be aware that it is a newer weight loss surgery and not well established in the UK. It is necessary to carefully research the implications and discuss the options with an experienced surgeon before deciding if this procedure is right for you. Making the right decision requires a careful process of measuring the risks against the benefits. 

What is the recovery like?

During laparoscopic surgery the surgeon makes small incisions, meaning a shorter healing time. With laparoscopic gastric bypass surgery you will likely stay in hospital for 2 to 3 days. 

It is important to take up gentle exercise as soon as possible stimulate blood flow and aid the healing process. 

What are the risks and complications? 

All surgery carries risk. Possible complications associated with Mini Gastric Bypass can include: 

  • New intolerances to certain foods 
  • Gastroesophageal reflux disease (GERD) with severe heartburn 
  • Nutritional deficiencies due nutrient malabsorption 
  • Dumping syndrome 
  • Staple line leaks 
  • Vomiting, nausea, diarrhoea 
  • Strictures 
  • Bowel obstruction
  • Blood clot

Please seek and follow the specific guidelines from your bariatric team. Guidelines vary for individual patient needs and surgeries.​