Gastric Bypass Surgery

Dr. Steven Tersigni is one of the most experienced bariatric surgeons in Oregon. His patients have phenomenal results. If you are considering weight-loss surgery, please contact us today to schedule a consultation with Dr. Tersigni!


What Is Gastric Bypass Surgery?

What Is Gastric Bypass Surgery? Gastric bypass surgery is a permanent weight-loss procedure. The most common procedure performed in the United States is the Roux-en-Y gastric bypass, in which a stomach pouch is created. During Roux-en-Y gastric bypass, the stomach is divided just below the esophagus to create two separate compartments. The small intestine is surgically divided to create a Y-type connection, and none of the intestine is removed.

The lower stomach is closed and heals permanently, but it continues to produce digestive fluids, secretions, and enzymes. Digestive secretions will flow through the first section of the intestine and combine with food for normal digestion and absorption.


Lori Risner

In March of 2013, Lori had gastric bypass surgery and has lost almost 100 lbs.
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The second section of intestine is connected to the newly created stomach pouch. The point of connection is called an anastomosis. The stomach-to-intestine anastomosis is small so that solid food stays in the stomach longer. This causes a sensation of fullness before the food slowly empties into the intestine through the newly reconstructed opening. Because appetite is reduced, the drive to eat more than the body needs is finally eliminated.

The two sections of the small intestine are rejoined to form a common limb. The intestine-to-intestine anastomosis is wide, so food can pass easily. At the point of this anastomosis, digestion occurs normally because pancreatic enzymes and bile from the first section have traveled down the Roux limb.


How Does Gastric Bypass Surgery Work?

The surgery accomplishes the goal of weight loss by reducing the size of the stomach and then bypassing a portion of the small intestine.

The stomach normally has the ability to hold a great deal of food—about 2 to 3 quarts in capacity. This allows a higher caloric intake than can be expended in energy per day. These extra calories are then stored as fat. Gastric bypass surgery uses about 3 percent of the stomach, creating a 1-ounce-size pouch. This allows you to achieve a feeling of being full while eating smaller portions. The result is a decrease in caloric intake, which in turn results in weight loss. Eventually, the 1-ounce pouch grows to hold about 5.5 ounces. This allows for three small meals per day without further weight loss.

Bypassing a portion of the small intestine also helps with weight loss. Most fat that is eaten is absorbed in the small intestine. Bypassing a portion of the small intestine decreases the absorption of fat, causing further weight loss. Because the small intestine also absorbs protein, many patients are protein deficient during the first year. It is therefore extremely important that patients follow the dietary regime, which includes eating at least 65 to 100 grams of protein per day.


Laparoscopic Gastric Bypass Surgery

At Bay Bariatrics we offer both open and laparoscopic Roux-en-Y gastric bypass surgery. These surgeries are the same, with the exception of the incision. During an open Roux-en-Y gastric bypass, Dr. Tersigni makes a large incision in the abdomen, whereas the laparoscopic method requires several small incisions. Dr. Tersigni performs laparoscopic surgery with small instruments and uses a camera as a guide. Most of our bariatric surgeries are performed using the laparoscopic method.

The laparoscopic Roux-en-Y gastric bypass has multiple benefits:

  • Less time in the hospital
  • Quicker recovery time
  • Less time off work
  • Less postoperative pain
  • Reduced risk of hernias and wound infections
  • Smaller scars

Every patient is different, and Dr. Tersigni will evaluate whether you are a candidate for the laparoscopic method.


Is Gastric Bypass Surgery Right for You?

The primary goal of Dr. Tersigni and the entire Bay Bariatrics staff is to help you meet your objectives of better health and quality of life through significant weight reduction. We also want you to make an informed decision about taking this step by being aware of the responsibilities, possible complications, and benefits of surgery. If you elect to have bariatric surgery, we will provide you with dietary, exercise, and behavior modification guidelines. The tools and the support are designed to help you achieve success and experience the “rebirth” of losing weight and maintaining your long-term goals.

If you have any questions, please write them down and bring them to your consultation appointment. We have a wealth of experience in bariatric surgery and can provide you with the information you need to make sound decisions.


Additional Procedures

In addition to both open and laparoscopic Roux-en-Y gastric bypass, Bay Bariatrics offers the following bariatric procedures: