A mini gastric bypass is a procedure done on the stomach and intestines to help people lose weight. It is a type of bariatric surgery.
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A mini-gastric bypass is a treatment for obesity. The procedure will help limit overeating and decrease how many calories you absorb.
A mini gastric bypass may be recommended for people with a: Body mass index (BMI) greater than 40BMI greater than 35 with cardiovascular disease, sleep apnea, or uncontrolled type 2 diabetesBMI greater than 35 with severe physical limitations that affect employment, mobility, and family life
This procedure may be done after a person has failed to lose weight through other methods such as healthful eating and exercise.
Benefits of bariatric surgery will depend on lifestyle changes that are also adopted. Benefits may include: Long-term weight lossImprovement in many obesity-related conditions, such as diabetes, sleep apnea, high blood pressure, and high cholesterolImproved mobility and increased energyImproved mood, self-esteem, and quality of lifeReduced risk of dying from cardiovascular disease
If you are planning to have a mini gastric bypass, your doctor will review a list of other complications such as: Adverse reaction to anesthesia, especially in patients who also have sleep apneaInfectionBlood clot formation in the veins of the legs or lungsExcess bleedingLeaking of stomach contents into the abdominal cavityHernia formationDeath (rare)
Conditions that may develop after surgery may include: GallstonesDyspepsia or ulcersScar tissue formation creating a bowel obstructionLow blood sugar called hypoglycemiaNutritional deficiencies particularly low levels of protein or vitaminsBody image distortion—patients have difficulty adjusting to their new appearanceInability to lose weight after surgeryExcess weight loss (rare)
Problems are more common in older adults. Factors that may increase the risk of problems include: SmokingRecent or chronic illness, such as kidney diseaseDiabetesHeart or lung diseaseBleeding or clotting disorders
Talk to your doctor about these risks before the procedure.
Each bariatric surgery program has specific requirements. Your program will likely include: A physical exam and review of your medical historyAttempts to lose weight through medically approved dietary meansOngoing consultations with a registered dieticianMental health evaluation and counseling
Before your procedure:
Talk to your doctor about your medications, herbs, and dietary supplements. You may be asked to stop taking some medications up to 1 week before the procedure. Do not start taking any new medications, herbs, or supplements without talking to your doctor.Arrange for a ride to and from the hospital.Arrange for help at home as you recover.You may be asked to take laxatives or give yourself an enema to clear your intestines.The night before your surgery, eat a light meal. Do not eat or drink anything after midnight unless told otherwise by your doctor.Shower or bathe the morning of your surgery.
General anesthesia will be used to. You will be asleep during the surgery.
An IV line will be placed in your arm. Fluids and medication will be delivered through this line during the procedure. A breathing tube will be placed through your mouth and into your throat. It will help you breathe during surgery.
Small incisions will be made in the abdominal wall. A camera and surgical instruments will be passed through these incisions. The stomach will be divided into two parts. One part will be reconstructed to resemble a tube. The first part of the small intestine will then be bypassed by connecting the stomach tube to a section of the small intestine further down than previous attachment point.
The small incisions will be closed. Bandages may be placed over the incision sites.
After the operation, you will be taken to the recovery room for observation.
Anesthesia prevents pain during surgery. As you recover, you may have some pain. You will be given pain medication.
Eating too much will cause discomfort. Work with a dietitian to create a meal plan that will provide enough nutrition without causing discomfort.
This is done in a hospital. The usual length of stay is 2 days. If you have any problems, you may need to stay longer.
While you are recovering at the hospital, you may receive the following care: Pain medication will be given as needed.On the day after surgery—you will have an x-ray to check for leaks from the stomach.
Your stomach will not only be smaller but will also be swollen after surgery. This will limit the types and amount of food you can eat. You will be started on liquids only. Medications or vitamins may also need to be crushed up or taken as liquid.
While in the hospital, you may be asked to do the following: Use an incentive spirometer to help you take deep breaths. This helps prevent lung problems.Wear elastic surgical stockings or boots to promote blood flow in your legs.Get up and walk in the hall daily.
For best success, you will need to practice lifelong healthy eating and exercising habits. Walk as soon as possible. Make a goal to exercise daily.
You will meet regularly with your healthcare team for monitoring and support. Be sure to follow your doctor’s instructions.
You may have emotional ups and downs after this surgery. Ask your doctor about support groups or counseling that may help.
Your new stomach is small and slow to empty, causing you to feel full quickly. Therefore, you need to eat very small amounts and eat every slowly. Some basic steps may include: You will begin with 4-6 meals per day. A meal is two ounces of food. For the first 4-6 weeks after surgery, all food must be pureed.After you move to solid foods, you will need to consume enough protein. Follow your dietitian’s meal plans.Avoid sweets and fatty foods.Eating too much or too quickly can cause vomiting or intense pain under your breastbone. Most people quickly learn how much food they can eat.
If you are taking medications or supplements:
Crush any non-chewable pillsOpt for chewable pills or liquid when possible
After you leave the hospital, call your doctor if any of the following occurs: Signs of infection, including fever and chillsRedness, swelling, increasing pain, excessive bleeding, or discharge from the incision siteCough, shortness of breath, chest pain, or severe nausea or vomitingWorsening abdominal painBlood in the stoolPain, burning, urgency or frequency of urination, or persistent bleeding in the urinePersistent nausea and/or vomitingPain and/or swelling in your feet, calves, or legsSudden shortness of breath or chest painAny other worrisome symptoms
In case of an emergency, call for emergency medical services right away.
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Last reviewed November 2014 by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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