Mini Gastric Bypass (MGB) – Eat More

One of the 1st in India

Largest volume of MGB in Tamil Nadu

2hr : 00 min



How does an MGB work

This procedure is sort-of a hybrid of Sleeve Gastrectomy and Roux-en-Y Gastric Bypass.

The surgeon longitudinally divides the stomach into a tube-like left-hand-side and a pouch-like right-hand-side. The right-hand pouch is still attached to the small intestine, through which all digestive juices/hormones secreted in the stomach are sent out. Whereas the left-hand still attached to the esophagus (food pipe) through which the food enters the stomach.

The lower part of the stomach is then connected to the middle portion of the small intestine, wherein the food and digestive juices/hormones mix with each other.

Significant portion of what we eat is absorbed in the small intestine. By bypassing a large portion of the small intestine, this procedure cause malabsorption, thereby resulting in weight loss.


Performing Mini-Gastric-Bypass (MGB)

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    1 to 4 tiny incisions (1 for scarless surgery; 4 for regular laparoscopic surgery) are made in abdomen through which the surgeon accesses the stomach

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    Energy devices are used to demobilize the stomach and make it free to manipulate

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    Stomach Stapling

    Using devices called laparoscopic staplers, the surgeon cuts the stomach longitudinally like a banana. While cutting the stomach, the stapler also seals the cut ends of the stomach. The cut is made in such a way that the left-hand stomach is in the shape of a tube or a banana.

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    Top and Bottom ends of the Stomach

    The stomach is cut in such a way that the esophagus (food pipe) is still attached to the left-hand tube. And the small-intestine at the bottom remains attached to the right-hand stomach pouch.

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    Re-attaching the left hand stomach

    The left-hand tube of a stomach is attached to the middle of the small intestine. At this point, the food from the left-hand tube and the digestive juices/hormones from the right-hand stomach mingle with each other.

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    Finishing up

    The surgical team performs a quality check and retracts and closes up.

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    The patient is typically requested to remain in the hospital for 2 to 3 days after the surgery. After whih time, they are discchared from the hospital, with a request to take 5 more days of bed rest at home

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    5 Yr Follow up

    All patients who undertake bariatric surgery at LIMA have five years of free support in terms of free consultation, patient education, bariatric community, life change coaching, etc.

Mini Gastric Bypass is generally easier on the surgeons as it requires less technical work and doesn’t involve re-routing the intestine in a drastic way.

After this surgery, the smaller stomach causes the patient to feel less hungry. Since food bypasses the first section of the small intestine, which is the part that absorbs calories, it prompts additional weight loss.

Also, because of the changes in the digestive tract, this surgery normalizes the metabolic conditions of the patient, including reversal of diabetes, within two weeks to two months. While it is similar to Roux-en-Y surgery in its effect, after an MGB, the patient can eat more food as the size of the stomach is relatively bigger, and the malabsorption is stronger.

Limitation of MGB

Like in the case of RYGB, people who undergo MGB will be required to take life-long vitamin and mineral supplementation.

Video: Performing a Mini Gastric Bypass




mini gastric bypass specialist


Dr. J.S Rajkumar

Chief Surgeon

M.S., F.I.C.S., Dip. N.B. (SURG.), F.R.C.S. (ENG.), F.R.C.S. (EDIN.), F.R.C.S. (GLASGOW), F.R.C.S. (IRELAND), F.I.M.S., F.A.I.S., F.R.M.S. (LONDON), F.A.E. (GASTRO), F.A.C.G. (USA), F.I.C.A. (USA), F.I.A.G.E.S., Dip M.I.S. (FR.)


Dr. Anirudh Rajkumar

Bariatric and Laparoscopic Surgeon