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Patient information for laparoscopic surgery for severe (morbid) obesity from sages
Patient Information published on: 03/2004
by the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
PATIENT INFORMATION FROM YOUR SURGEON & SAGES
Laparoscopic Surgery for Severe (Morbid) Obesity
Laparoscopic surgery for obesity is for people who are severely overweight. Laparoscopy involves using aspecialized telescope (laparoscope) to view the stomach, which typically allows smaller abdominal incisions. Thisbrochure will explain:
• What is severe (morbid) obesity? • Medical and surgical treatment options for severe (morbid) obesity • How laparoscopic obesity surgery is performed • Expected outcomes of the procedure • What can be expected after laparoscopic obesity surgery
WHAT IS SEVERE OBESITY?
Severe obesity, sometimes known as "morbid obesity", is defined as being approximately 100 pounds (45.5 kg)or 100% above ideal body weight. This is determined according to the Metropolitan Life Insurance Companyheight and weight tables. Between 3-5% of the United States adult population has severe obesity. This conditionis associated with the development of life-threatening complications such as hypertension, diabetes andcoronary artery disease, to name a few.
Numerous therapeutic approaches to this problem have been advocated, including low calorie diets, medication,behavioral modification and exercise therapy. However, the only treatment proven to be effective in long-termmanagement of morbid obesity is surgical intervention.
WHAT CAUSES SEVERE OBESITY?
The cause of severe (morbid) obesity is poorly understood. There are probably many factors involved. In obesepersons, the set point of stored energy is too high. This altered set point may result from a low metabolism withlow energy expenditure, excessive caloric intake, or a combination of the above. There is scientific data thatsuggests obesity may be an inherited characteristic.
Severe obesity is most likely a result of a combination of genetic, psychosocial, environmental, social andcultural influences that interact resulting in the complex disorder of both appetite regulation and energymetabolism. Severe obesity does not appear to be a simple lack of self-control by the patient.
WHAT ARE THE TREATMENT OPTIONS?
In 1991, the National Institutes of Health Conference concluded that non-surgical methods of weight loss forpatients with severe (morbid) obesity, except in rare instances, are not effective over long periods of time. It wasshown that nearly all participants in any non-surgical weight-loss program for severe (morbid) obesity regainedtheir lost weight within 5 years. Although prescriptions and non-prescription medications are available to induceweight loss, there does not appear to be a role for long-term medical therapy in the management of morbidobesity. Medications that reduce appetite can result in 11 to 22 pound weight reduction. However, weight gain israpid once medication is withdrawn. Various professional weight loss programs use behavior modificationtechniques in conjunction with low caloric diets and increased physical activity. Weight loss of one to two poundsper week has been reported, but nearly all the weight loss is regained after 5 years.
A number of weight loss operations have been devised over the last 40-50 years. The operations recognized bymost surgeons include: vertical banded gastroplasty, gastric banding (adjustable or non-adjustable), Roux-en-Ygastric bypass, and malabsorbtion procedures (biliopancreatic diversion, duodenal switch).
The vertical banded gastroplasty involves the construction of a small pouch that restricts the outlet to the lowerstomach. The outlet is reinforced with a piece of mesh (screen) to prevent disruption and dilation
The laparoscopic gastric band involves placing a 1/2 inch belt or collar around the top portion of the stomach.
This creates a small pouch and a fixed outlet into the lower stomach. The adjustable band, which was approvedby the FDA in June 2001, can be filled with sterile saline. When saline is added, the outlet into the stomach ismade smaller which further restricts food from leaving the pouch.
The gastric bypass procedure involves dividing the stomach and forming a small gastric pouch. The new gastricpouch is connected to varying lengths of your own small intestine constructed into a Y-shaped limb (Roux-en-Ygastric bypass).
The malabsorbtion operations cause weight loss by decreasing absorption of calories from the intestines. Theseoperations involve reducing the stomach size and bypassing most of the intestines.
Choosing between the different operative procedures involves the surgeon's preference and consideration of thepatient's eating habits.
WHAT ARE THE ADVANTAGES OF THE LAPAROSCOPIC OBESITY SURGERY?
Advantages of the laparoscopic approach include:
• Reduced post-operative pain • Shorter hospital stay • Faster return to work
WHO SHOULD BE CONSIDERED FOR LAPAROSCOPIC OBESITY SURGERY?
The following guidelines for selecting patients for obesity surgery were established by the National Institute ofHealth:
1. Patients should exceed ideal body weight by approximately 100 pounds (45.5 kg) or 100% above ideals
2. Patients should have no known metabolic (chemical breakdown of food into energy) or endocrine
(hormone) causes for the morbid obesity.
3. Patients should have an objectively measurable complication (physical, psychological, social, or
economic) that might benefit from weight reduction. This includes hypertension (high blood pressure),diabetes (too much sugar in the blood), heart disease, breathing problems or lung disease, sleep apnea(snoring) and arthritis, just to name a few.
4. The patient should understand the full importance of the proposed surgical procedure including suspected
5. The patient should be willing to be observed and followed by a medical professional for many years. 6. The patient should have attempted weight reduction using medical treatment without success.
In some instances, a patient who is not quite 100 pounds or 100% above the ideal body weight is a candidate forsurgical intervention. This patient should have a significant medical problem(s) that could benefit from weightreduction.
WHAT PREPARATION IS REQUIRED?
• A thorough medical evaluation to determine if you are a candidate for laparoscopic obesity surgery by your
• Supplemental diagnostic tests may be necessary, including a nutritional evaluation. • A psychiatric or psychological evaluation may be required to determine the patient's ability to adjust to
• Consultation from specialists, such as cardiologist, pulmonologist or endocrinologist may be needed
depending on your own specific medical condition.
• Continued participation in Obesity Support Group is encouraged • A written consent for surgery will be needed after the surgeon reviews the potential risks and benefits of the
• The day prior to surgery, you will begin a clear liquid diet. • Blood transfusion and/or blood products such as platelets may be needed depending on your condition. • Your surgeon may request that you completely empty your colon and cleanse your intestines prior to
• It is recommended that you shower the night before or morning of the operation. • After midnight the night before the operation, you should not eat or drink anything except medications that
your surgeon has told you are permissible to take with a sip of water the morning of surgery.
• Drugs such as aspirin, blood thinners, anti-inflammatory medications (arthritis medications) and Vitamin E
will need to be stopped temporarily for several days to a week prior to surgery.
• Diet medication or St. John's Wort should not be used for the two weeks prior to surgery. • Quit smoking and arrange for any help you may need at home.
HOW IS LAPAROSCOPIC OBESITY SURGERY PERFORMED?
In a laparoscopic procedure, surgeons use small incisions (1/4 to 1/2 inch) to enter the abdomen throughcannulas (narrow tube-like instruments). The laparoscope, which is connected to a tiny video camera, is insertedthrough the small cannula. A picture is projected onto a TV giving the surgeon a magnified view of the stomachand other internal organs. Five to six small incisions and cannulas are placed for use of specialized instrumentsto perform the operation.
The entire operation is performed inside the abdomen after expanding the abdomen with Carbon dioxide (CO2)gas. The gas is removed at the completion of the operation.
WHAT HAPPENS IF THE OPERATION CANNOT BE PERFORMED BY THE LAPAROSCOPIC METHOD?
In a small number of patients the laparoscopic method cannot be performed. Factors that may increase thepossibility of choosing or converting to the "open" procedure may include a history of prior abdominal surgerycausing dense scar tissue, inability to visualize organs or bleeding problems during the operation.
The decision to perform the open procedure is a judgment decision made by your surgeon either before orduring the actual operation. When the surgeon feels that it is safest to convert the laparoscopic procedure to anopen one, this is not a complication, but rather sound surgical judgment. The decision to convert to an openprocedure is strictly based on patient safety.
WHAT SHOULD I EXPECT THE DAY OF SURGERY?
• You will arrive at the hospital the morning of the operation. • Preparation before surgery often includes changing into a hospital gown. • A qualified medical staff member will place a small needle/catheter (IV) in your vein to dispense medication
• Often pre-operative medications are necessary. • You will meet the anesthesiologist and discuss the anesthesia. • You will be under general anesthesia (asleep) during the operation, which may last for several hours. • Following the operation you will be sent to the recovery room until you are fully awake. Then you will be
• Most patients stay in the hospital the night of surgery and may require additional hospital days to recover
WHAT ARE THE EXPECTED RESULTS AFTER LAPAROSCOPIC OBESITY SURGERY?
The success rate for weight loss is reported as being slightly higher with gastric bypass operation than thegastroplasty or gastric banding, but all techniques show good to excellent results. Most reports show a 40-50%loss of excess weight for the gastric banding and vertical banded gastroplasty and a 65-70% loss of excess bodyweight for the gastric bypass after 1 year. The malabsorbtive operations generally achieve an average bodyweight loss of 70-80% after a year. Weight loss generally continues for all the procedures for 18-24 months aftersurgery. Some weight gain is common about two to five years after surgery.
Effect of surgery on associated medical condition
Weight reduction surgery has been reported to improve conditions such as sleep apnea, diabetes, high bloodpressure and high cholesterol. Many patients report an improvement in mood and other aspects of psychosocialfunctioning after surgery. Because the laparoscopic approach is performed in a similar manner to the openapproach, the long-tern results appear to be similarly good.
WHAT COMPLICATIONS CAN OCCUR?
Although the operation is considered safe, complications may occur as they may occur with any major operation.
The immediate operative death rate for any of the laparoscopic obesity procedures is relatively low in thereported case series (less than 2%). On the other hand, complications such as wound infections, woundbreakdown, abscess, leaks from staple-line breakdown, perforation of the bowel, bowel obstruction, marginalulcers, pulmonary problems and blood clots in the legs may be as high as 10% or more. In the post-operativeperiod other problems may arise that may require more surgery. These problems include pouch dilatation,persistent vomiting, heartburn or failure to lose weight. In a rare individual, reversal of the operation is necessarydue to a complication of surgery. Complication rates with secondary surgery are higher than after the firstoperation.
Gallstones are a common finding in the obese patient. Symptoms from these gallstones are a commonoccurrence with weight loss. Many physicians either treat patients with bile lowering medication (Actigall orURSO) or recommend gallbladder removal at the time of the operation. This should be discussed with yoursurgeon and physician.
After gastric bypass, nutritional deficiencies such as Vitamin B-12, folate, and iron may occur. Taking necessaryvitamin and nutrient supplements can generally prevent them. Another potential result of gastric bypass is"Dumping Syndrome". Abdominal pain, cramping, sweating, and diarrhea characterize dumping Syndrome aftereating drinks and foods that are high in sugar. Avoiding high sugar foods can prevent these symptoms. After themalabsorbtive operations, the same nutritional deficiencies that occur after gastric bypass may occur, as well asprotein deficiencies. Diarrhea or loose "stools" are also common after malabsorbtion operations depending on fatintake.
Women who become pregnant after any of these surgical procedures need special attention from their doctorsand clinical care team. In general, complication rates of the laparoscopic approach are equal to or less than theconventional, open operations. Following obesity surgery, patients must re-orient themselves and adjust to theeffect of a changing body image.
As with any operation, there is a risk of a complication. However, the risk of one of these complications occurringis no higher than if the operation was done with the open technique.
WHAT TO EXPECT AFTER SURGERY
You will usually be in the hospital 1 to 3 days after a laparoscopic procedure. You may have a tube through yournose and not be permitted to eat or drink anything until it is removed. You should be out of bed, sitting in a chairthe night of surgery and walking by the following day. You will need to participate in breathing exercises. You willreceive pain medication when you need it.
On the first of second day after surgery you may have an X-ray of your stomach. The X-ray is a way for thesurgeon to know if the stapling of the stomach is okay before beginning to allow you to eat. If no leakage orblockage is seen (the usual case) then you will be permitted to have one ounce of liquids every hour. The
volume of liquid you drink will be gradually increased. Some surgeons allow you to eat baby food or a "puree"type of food. You will remain on a liquid or puree diet until your doctor evaluates you approximately 1-2 weeksafter you return home.
Patients are encouraged to walk and engage in light activity. It is important to continue the breathing exerciseswhile at home after surgery. Pain after laparoscopic surgery is generally mild although some patients mayrequire pain medication. At the first follow-up visit the surgeon will discuss with you any dietary changes.
After the operation, it is important to follow your doctor's instructions. Although many people feel better in just afew days, remember that your body needs time to heal. You will probably be able to get back to most of yournormal activities in one to two weeks time. These activities include showering, driving, walking up stairs, andwork and light exercise.
You should call and schedule a follow-up appointment within 2 weeks after your operation.
WHEN TO CALL YOU DOCTOR
Be sure to call your doctor if you develop any of the following:
• Persistent fever over 101F (39 C) • Bleeding • Increased abdominal swelling or pain • Persistent nausea or vomiting • Chills • Persistent cough and shortness of breath • Difficulty swallowing that does not go away within a few weeks • Drainage from any incision • Calf swelling or leg tenderness
For additional information on surgical treatment for morbid obesity, please refer to the National Institutes of).
This brochure is not intended to take the place of your discussion with your surgeon about the need for
laparoscopic obesity surgery. If you have questions about your need for obesity surgery, your alternatives, billing
or insurance coverage, or your surgeon's training and experience, do not hesitate to ask your surgeon or his/her
office staff about it. If you have questions about the operation or subsequent follow-up, please discuss them with
your surgeon before or after the operation.
SOCIETY OF AMERICAN GASTROINTESTINAL ENDOSCOPIC SURGEONS (SAGES) 11300 West Olympic Blvd., Suite 600 Los Angeles, CA 90064 Tel: (310) 437-0544 Fax: (310) 437-0585 E-Mail: firstname.lastname@example.org
This brochure was reviewed and approved by the Board of Governors of the Society of AmericanGastrointestinal Endoscopic Surgeons (SAGES), March 2004. It was prepared by the SAGES Task Force onPatient Information.
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