In gastric bypass operation the stomach is divided into a small upper pouch and a much larger, lower pouch. The small upper pouch is then joined to the small intestine..The small stomach pouch will feel full more quickly than when stomach was its original size, which reduces the amount of food taken and thus the calories consumed. Bypassing part of the intestine also results in fewer calories being absorbed. This leads to weight loss.

   Advantages:

The weight loss is upto 90-100% of Extra Weight Loss after this surgery

Many associated medical conditions may be greatly improved such as :

High Blood Pressure’ ( About 60 percent of patients with high blood pressure are able to stop all medications and have a normal blood pressure, usually within two to three months after surgery.)

High Cholesterol (Hypercholesteremia) (More than 70 percent of patients will develop normal cholesterol levels within two to three months.)

DiabetesMore than 80 percent of Type-2 diabetics obtain excellent results, usually within a few weeks after surgery

AsthmaAccording to IFSO, successful bariatric surgery reduces the number and severity of asthma attacks.

Respiratory InsufficiencyImprovement of exercise tolerance and breathing ability usually occurs within the first few months after surgery

Sleep Apnea SyndromeDramatic relief of sleep apnea occurs as patients lose weight. Many report that within a year of surgery, their symptoms were completely gone, and they had even stopped snoring completely-and their spouses agree. Sleep apnea is cured in about 75 percent of patients after surgery

Gastro-Esophageal Reflux DiseaseRelief of symptoms of reflux usually occurs within a few weeks of surgery for many patients

Gallbladder DiseaseWhen gallbladder disease is present at the time of the surgery, it is "cured" by removing the gallbladder during the operation

Stress Urinary IncontinenceThis condition responds dramatically to weight loss and usually significant improvement in the control occurs.

Low Back Pain, Degenerative Disk Disease, & Degenerative Joint DiseasePatients usually experience considerable relief of pain and disability from degenerative arthritis and disc disease and from pain in the weight-bearing joints.

   Limitations

Surgical risk is higher as comared to purely restrictive procedures.

It can not be esily reversed .

The malnutrition and deficiencies are common.

Side Effects:

Vitamin and mineral deficiency (iron deficiency anemia, vitamin B-12 deficiency and vitamin D deficiency)

Dumping Syndrome This is a condition where stomach contents move too quickly through the small intestine, causing nausea, vomiting, diarrhea, dizziness and sweating. It's frequently experienced after eating sweets or high-fat foods.

Dehydration

Gallstones

Bleeding stomach ulcer

Intolerance to certain foods

Kidney stones

   Complications

bleeding, infection and an adverse reaction to the anesthesia. Like any other surgical procedures.

Blood clots in the legs. (DVT) Blood clots in the legs are more likely to occur in very overweight people. Blood clots can be dangerous. In some cases, they travel to the lungs and lodge in the lungs' arteries causing a pulmonary embolism — a serious condition that damages lung tissue and can lead to death.

Leaking at one of the staple lines in the stomach. This is a evere postoperative problem. It may heal with conservative treatment of antibiotics .Often, however, the leak can be serious enough to require re-surgery.

Narrowing of the opening stoma between the stomach and small intestine. It may require endoscopic dilatation or a corrective surgery.

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