Dr. Kim performs this operation laparoscopically 98 percent of the time. The complete name of this operation is Laparoscopic Roux-en-Y Gastric Bypass. The other two percent of the time, because of the patient’s health and past medical history, this operation is performed through an incision, called Open Gastric Bypass Surgery. Gastric Bypass Surgery is the most common operation performed in the United States, and over 140,000 of these operations are performed every year. It was first performed in 1967, so more data has been collected about this operation than any other bariatric surgery. Because it’s the oldest and most popular bariatric surgery in the United States, it is often referred to as the “gold standard.”

A small egg-sized pouch is created with stapling devices, and then connected to the distal small intestine. The upper part of the small intestine is then reattached to create the “Y” shape (this is why Gastric Bypass is often called the Roux-en-Y).

Gastric Bypass Surgery helps patients lose weight because it significantly reduces the amount of food that can be eaten at meal time. It also limits the absorption of calories and fat. Dr. Kim will use staples to create a new pouch, which is separated from the rest of the stomach. The pouch is then connected to the lower part of the small intestine. The lower part of the stomach continues to receive its blood supply and is not removed. Because the pouch is separated from the lower part of the stomach, food will no longer enter this part of the stomach or the upper part of the small intestine, limiting the calories the body would normally absorb. After this surgery, food will go into the small pouch and on to the lower intestine. This pouch is typically the size of an egg, so it can only hold a few ounces at a time, limiting the amount of food a patient can eat. Patients must chew their food very thoroughly. After having Gastric Bypass Surgery, some patients may get sick after eating sweets. This feature is called dumping and only occurs in gastric bypass surgery and often helps patients modify their diet to restrict sugary and sweet foods. “Dumping syndrome” is not caused by sugar substitutes. It also does not occur after Lap Band Surgery or Laparoscopic Sleeve Gastrectomy. Dr. Kim feels that follow up visits are necessary to monitor your health after this operation.

Open vs. Laparoscopic Roux-en-Y Gastric Bypass Surgery
Benefits of Gastric Bypass Surgery
Gastric Bypass Surgery Risks & Complications