Laparoscopic Gastric Bypass

The Roux-en-Y Gastric Bypass – often called gastric bypass – is considered the ‘gold standard’ of weight loss surgery.

A small stomach pouch is created by dividing the top of the stomach from the rest of the stomach.

A segment of the small intestine is brought up and hooked up to the stomach pouch.

The food bypasses the stomach and major portion of intestine.

How does Gastric Bypass Surgery Work?

The small stomach pouch reduces the amount of food intake. 

Decreased absorption of calories due to intestinal bypass.

Changes in gut hormones that promote satiety and suppress hunger.

Gastric Bypass

Advantages of Gastric Bypass

  1. Produces significant long-term weight loss (60 to 80 percent excess weight loss)
  2. Restricts the amount of food that can be consumed
  3. May lead to conditions that increase energy expenditure
  4. Produces favorable changes in gut hormones that reduce appetite and enhance satiety
  5. Typical maintenance of >50% excess weight loss

Gastric Bypass Surgery Cost

Gastric Bypass surgery or Roux-en Y gastric bypass is one of the highly effective surgeries for achieving long term weight loss. Many insurances would cover the surgery.  Sometimes due to lack of medical insurance or due to a weight loss surgery exclusion in the insurance contract, patients may have to pay out of pocket for the surgery.

At Arch Bariatrics, Dr. Kumaran Chinnappan offers safe and successful gastric bypass surgery at a very competitive price. He is top rated and well known as one of the best bariatric surgeons in Missouri and has performed thousands of bariatric surgeries successfully. He has been in practice in Saint Louis, Missouri since 2010.

Click here to learn more about Gastric Bypass surgery at Arch Bariatrics, Saint Louis, MO.

Disadvantages of Gastric Bypass

Is technically a more complex operation than the Gastric Band or Sleeve Gastrectomy

Can lead to long-term vitamin/mineral deficiencies particularly deficits in vitamin B12, iron, calcium, and folate

Generally has a longer hospital stay than the Adjustable Gastric Band.

Requires adherence to dietary recommendations, life-long vitamin/mineral supplementation, and follow-up compliance.

Benefits of Gastric Bypass Surgery

Significant and long lasting weight Loss

Increased energy, less pain, more enthusiasm in the long term

Improved longevity

Treats conditions such as:


Diabetes Mellitus

Heart Disease


Obstructive Sleep Apnea

Risks of Gastric Bypass Surgery

Anesthesia related Risks:

Lung Infection

Lung Collapse

Heart attack or Stroke

Blood clots in legs or Lungs

Reactions to medications

Surgery Related Risks:



Gastric Leak- leading to internal infection

Injury to internal organs

Possible additional Surgeries

Long term vitamin deficiencies and Malabsorption

Risk of stomach ulcer, bowel obstruction

Risk of internal hernia causing bowel twisting

Possible gallstone disease due to rapid weight loss

Like with any surgical operation, risk of death.

Bariatric surgery before and after

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