Roux-En-Y Gastric Bypass (RYGB)
RYGB has been performed for over 30 years, primarily in America. The RYBG is also performed by key hole surgery. The RYGB is the common weight loss procedure done worldwide with good long term results. The RYGB is a technically challenging procedure for the surgeon, involving re-routing of the intestinal tract.
As the name suggests this operation bypasses the majority of the stomach. The remanent of the stomach stays in situ and the small bowel is attached. The part of the stomach and small intestine that are bypassed remain attached lower down on the bowel to help with bile juice excretion and to assist if the old stomach needs to be used if any complications occur.
The bypasses are not restrictive in the amount a patient eats but some malabsorption can occur. The bypass operation is very effective for those patients who suffer from diabetes and reflux. Co-morbidities such as diabetes, high blood pressure can start to resolve immediately, even before significant weight loss.
There is also a risk of complications with RYGB such as stricture of the join (anastomsis), bowel obstruction and leak around the join (anastomosis), bleeding and infection.
Single Anastamosis (omega loop) Gastric Bypass
The Single Loop anastomosis is also known as the Omega Loop Gastric Bypass or the Mini gastric Bypass. One of the advantages of the Omega Loop is their is only one join (anastomosis) making the surgery easier and quicker to perform for the surgeon thus reducing the operating time. The Single Loop Anastomosis is a new procedure, however the early results look very promising. Like the patients who undergo the RYGB single loop anastomosis patients are unable to tolerate high fat foods or foods high in sugar but we expect all other foods to be manageable.
The Single Loop Anastomosis like the RYGB does affects the absorption of some nutrients. We recommend for all of these weight loss procedures that our patients take a multivitamin daily for the rest of their lives and have annual blood tests.