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gastric banding (restrictive) surgery

(Gastric Banding Surgery, Adjustable Gastric Banding)

What is gastric banding surgery?

Gastric banding surgery is a type of Bariatric surgery (weight loss surgery) procedure performed to limit the amount of food a person can eat. Bariatric surgery is the only option today that effectively treats morbid obesity in people for whom more conservative measures such as diet, exercise, and medication have failed.

In gastric banding surgery, no part of the stomach is removed and the digestive process remains intact. A band is used to separate the stomach into two parts, one of which is a very small pouch that can hold about one ounce of food. The food from this "new" stomach empties into the closed-off portion of the stomach and then resumes the normal digestive process. Over time, the pouch can expand to hold two to three ounces of food. Because the size of the stomach is reduced so dramatically, this type of procedure is referred to as a restrictive procedure.

After gastric banding surgery, a person can only eat approximately one-half cup of food. The food must be well-chewed. Eating more than the stomach pouch can hold may result in nausea and vomiting.

The types of gastric banding procedures include:

  • Adjustable gastric banding (AGB) This procedure involves attaching an inflatable band around the top portion of the stomach and tightening it like a belt to form a small pouch that serves as a new, much smaller stomach. After the procedure, the diameter of the band around the stomach can be adjusted by a physician by adding or removing saline (salt water). No staples are used in this procedure, which has been used in the USA since 2001. The procedure has been used extensively in Europe and Australia.

Like other restrictive procedures, AGB may not achieve significant weight loss quickly. The US Food and Drug Administration (FDA) approved an AGB system in 2001 that can be put in place with a laparoscope (a small thin tube with a video camera attached) rather than with an open incision for patients who are morbidly obese, as indicated by a Body Mass Index (BMI) of 40 or more.

AGB may be performed with a laparoscope rather than through an open incision in some patients. This procedure uses several small incisions and three or more laparoscopes - small thin tubes with video cameras attached - to visualize the inside of the abdomen during the operation. The physician performs the surgery while looking at a TV monitor. Laparoscopic gastric surgery usually reduces the length of hospital stay and the amount of scarring, and often results in quicker recovery than an "open" or standard procedure.

Reasons for the procedure:

Bariatric surgery is performed because it is currently the best treatment option for producing lasting weight loss in obese patients for whom non-surgical methods of weight loss have failed.

  • Potential candidates for Bariatric surgery include:
  • persons with a Body Mass Index (BMI) greater than 40
  • men who are 100 pounds over their ideal body weight or women who are 80 pounds over their ideal body weight
  • persons with a BMI between 35 and 40 who have another condition such as obesity-related type 2 diabetes, sleep apnea, or heart disease

Because the surgery can have serious side effects, the long-term health benefits must be considered and found greater than the risk. Despite the fact that some surgical techniques can be done laparoscopically with reduced risk, all Bariatric surgery is considered to be major surgery.

Although not all risks with each procedure are fully known, Bariatric surgery does help many people to reduce or eliminate some health-related obesity problems. It may help to:

  • lower blood sugar
  • lower blood pressure
  • reduce or eliminate sleep apnea
  • decrease the workload of the heart
  • lower cholesterol levels

Surgery for weight loss is not a universal remedy, but these procedures can be highly effective in people who are motivated after surgery to follow their physician's guidelines for nutrition and exercise and to take nutritional supplements.

There may be other reasons for your physician to recommend a gastric banding procedure.

Risks of the procedure:

As with any surgical procedure, complications may occur. Some possible complications include, but are not limited to, the following:

  • infection
  • blood clots
  • pneumonia
  • bleeding ulcer
  • development of gallstones
  • obstruction or nausea can occur when food is not well-chewed

The most common complication that may develop with adjustable gastric band surgery is that the stomach pouch enlarges. Band slippage and saline leaks are also risks specific to adjustable gastric band surgery.

Risk is reduced with a laparoscopic banding procedure because there is no incision in the stomach wall.

There may be other risks depending upon your specific medical condition. Be sure to discuss any concerns with your physician prior to the procedure.

Before the procedure:

  • Your physician will explain the procedure to you and offer you the opportunity to ask any questions that you might have about the procedure.
  • You will be asked to sign a consent form that gives your physician permission to perform the procedure. Read the form carefully and ask questions if something is not clear.
  • In addition to a complete medical history, your physician may perform a complete physical examination to ensure you are in good health before undergoing the procedure. You may undergo blood tests or other diagnostic tests.
  • You will be asked to fast for eight hours before the procedure, generally after midnight.
  • If you are pregnant or suspect that you are pregnant, you should notify your physician.
  • Notify your physician if you are sensitive to or are allergic to any medications, latex, iodine, tape, or anesthetic agents (local and general).
  • Notify your physician of all medications (prescription and over-the-counter) and herbal supplements that you are taking.
  • Notify your physician if you have a history of bleeding disorders or if you are taking any anticoagulant (blood-thinning) medications, aspirin, or other medications that affect blood clotting. It may be necessary for you to stop these medications prior to the procedure.
  • You may be asked to begin exercising and alter your diet several weeks before surgery.
  • If you are a woman of child-bearing age, you may receive birth control counseling so that you do not become pregnant in your first year after surgery due to the risk to the fetus from rapid weight loss.
  • You may receive a sedative prior to the procedure to help you relax.
  • The area around the surgical site may be shaved.
  • Based upon your medical condition, your physician may request other specific preparation. 

During the procedure:

Adjustable gastric banding surgery requires a stay in the hospital. Procedures may vary depending on the type of procedure performed and your physician's practices. Gastric banding surgery will be performed while you are asleep under general anesthesia. Your physician will discuss this with you in advance.

Generally, gastric banding surgery follows this process:

  1. You will be asked to remove clothing and will be given a gown to wear.
  2. An intravenous (IV) line will be started in your arm or hand.
  3. You will be positioned lying on your back on the operating table.
  4. A urinary catheter will be inserted.
  5. The anesthesiologist will continuously monitor your heart rate, blood pressure, breathing, and blood oxygen level during the surgery.
  6. The skin over the surgical site will be cleansed with an antiseptic solution.
  7. For an open procedure, the physician will make a single large incision in the abdominal area. For a laparoscopic procedure, a series of small incisions will be made. Carbon dioxide gas will be introduced into the abdomen to inflate the abdominal cavity so that the appendix and other structures can easily be visualized.
  8. A hollow band will be placed around the top end of the stomach to create the small pouch that will serve as the new stomach. A narrow passage will connect to the rest of the stomach. The band will be inflated with a salt solution.
  9. A drain may be placed in the incision site to remove fluid.
  10. The incision(s) will be closed with stitches or surgical staples.
  11. A sterile bandage/dressing will be applied.

After the procedure:

After the procedure, you will be taken to the recovery room for observation. Once your blood pressure, pulse, and breathing are stable and you are alert, you will be taken to your hospital room. Gastric Banding surgery usually can usually be done on an outpatient basis.

You may receive pain medication as needed, either by a nurse or by administering it yourself through a device connected to your intravenous line.

You will be encouraged to move around as tolerated while you are in bed, and then to get out of bed and walk around as your strength improves.

At first you will receive fluids through an IV. After a day or two you will be given liquids, such as broth or clear juice, to drink. As you are able to tolerate liquids, you will be given thicker liquids, such as pudding, milk, or cream soup, followed by foods that you do not have to chew, such as hot cereal or pureed foods. Your physician will instruct you about how long to eat pureed foods after surgery. By one month after your procedure, you may be eating solid foods.

You will be instructed about taking nutritional supplements to replace the nutrients lost due to the reconstruction of the digestive tract.

Before you are discharged from the hospital, arrangements will be made for a follow-up visit with your physician.

At home:

Once you are home, it will be important to keep the surgical area clean and dry. Your physician will give you specific bathing instructions. The stitches or surgical staples will be removed during a follow-up visit.

The incision and abdominal muscles may ache, especially with deep breathing, coughing, and exertion. Take a pain reliever for soreness as recommended by your physician. Aspirin or certain other pain medications may increase the chance of bleeding. Be sure to take only recommended medications.

You should continue the breathing exercises used in the hospital.

You should gradually increase your physical activity as tolerated. It may take several weeks to return to your previous levels of stamina.

You may be instructed to avoid lifting heavy items for several months in order to prevent strain on your abdominal muscles and surgical incision.

Weight loss surgery can be emotionally difficult because you will be adjusting to new dietary habits and a body in the process of change. You may feel especially tired during the first month following surgery. Exercise and attending a support group may be helpful at this time.

Notify your physician to report any of the following:

  • fever and/or chills
  • redness, swelling, or bleeding or other drainage from the incision site
  • increased pain around the incision site

Following gastric banding surgery, your physician may give you additional or alternate instructions, depending on your particular situation.


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