Procedure guide · Bariatric and metabolic surgery
A Roux-en-Y gastric bypass creates a small stomach pouch and joins it to the small intestine, so food bypasses most of the stomach. MedlinePlus explains that you feel full sooner and absorb fewer calories. It is usually done by keyhole surgery. The NIDDK says it is difficult to reverse, so careful assessment comes first.
What is a Roux-en-Y gastric bypass?
MedlinePlus describes two steps. Staples divide the stomach into a small upper pouch and a larger lower part. Then part of the small intestine is joined to the pouch. The NIDDK adds a third step. The bypassed upper section of intestine is reconnected further down, so digestive juices can still mix with food.
MedlinePlus explains that laparoscopic surgery uses several small cuts and a camera. Compared with open surgery it usually means less pain and smaller scars. The NIDDK notes that the bypass carries a higher risk of vitamin and iron shortage than the band or sleeve.
Who may be suitable?
The NHS says surgery may be considered with a BMI of 40 or more. It may also be considered with a BMI of 35 to 40 and a condition that might improve with weight loss. For people of Asian, Middle Eastern and African family backgrounds it may be considered at a lower BMI. MedlinePlus says surgery is generally considered when diet, exercise and medicines have not worked well enough. The bariatric team decides.
MedlinePlus lists risks specific to the bypass. They include a leak at the staple line, ulcers, poor nutrition and scar tissue that could block the bowel later. Dumping syndrome is another. Food moves too quickly into the small intestine, especially after sugary or starchy meals.
Which reports does a bariatric team usually ask for?
MedlinePlus lists a physical examination, blood tests, a gallbladder ultrasound and nutrition counselling before surgery. Conditions such as diabetes, blood pressure, heart or lung problems should be under control first. Before travel, send your weight history and BMI. Send recent blood tests, including blood sugar and HbA1c if you have diabetes. Add a list of medicines and reports on any heart, lung or sleep problems.
A long-term commitment
The NHS says follow-up appointments continue for the rest of your life. Vitamin and mineral supplements are needed. Arrange a doctor at home before you travel who can check your blood tests.
How do you plan the trip?
The stages are a records review, assessment in India, surgery and in-hospital recovery. The staged return to food then begins. MedlinePlus notes that patients walk soon after surgery and move from liquids to puréed or soft food. Discharge depends on eating, drinking and pain control. An attendant should travel with you. Before you fly, collect your diet plan, supplement list and operation summary. Your surgeon decides when it is safe to fly.
What should you ask the hospital?
- Why do you suggest a bypass rather than a sleeve for me?
- Which tests do you need before deciding?
- How can I lower the risk of dumping syndrome?
- Which supplements will I need for life?
- Who will see me if I have pain or vomiting after I go home?
- How often should I have blood tests in the first year?
Questions people ask
What is dumping syndrome?
MedlinePlus describes dumping syndrome as food moving too quickly from the stomach into the small intestine. It is more likely after meals high in sugar and starch. Your dietitian will explain how to eat to reduce it.
Can a gastric bypass be reversed?
The NIDDK says a gastric bypass is difficult to reverse, although a surgeon may do it if medically necessary. Treat it as a permanent change and discuss alternatives with the team first.
Sources
- MedlinePlus: Gastric bypass surgery
- NIDDK: Types of weight-loss surgery
- NHS: Weight loss surgery – why it’s done
- NHS: Weight loss surgery – recovering
General information, not medical or legal advice. Rules change: confirm with the official source. Your treating specialist decides on suitability, treatment and length of stay. How we write and check.