Gastric bypass operations are a surgically proven form of weight loss when combined with a supervised diet, physical activity and behaviour modification programme. They are generally recommended for patients with higher BMI i.e. a Body Mass Index of 40 or over*.
Patients can expect to lose 75-80% of their excess body weight in the first two years following surgery (source: BOSPA). It is a more extensive surgical procedure than the gastric band, and is non-reversible.
There are several varieties of gastric bypass, but all involve the creation of a small stomach pouch to restrict food intake and reduce the absorption of calories and nutrients from food which causes effective weight loss results*.
The considerable health benefits of a gastric bypass include*:
- Most type II diabetics will be cured
- Major improvements in other weight associated conditions such as sleep apnoea, asthma, joint pain, arthritis and fatigue
- Reduces the risk of heart disease and cancer
- 70-80% of patients suffering with hypertension will no longer need to take medication
- Cholesterol levels will fall
Gastric Bypass Surgery
There are 2 main types of Gastric Bypass procedure, both of which essentially reduce the size of the stomach pouch so that less food is absorbed.
1. Roux-en-Y Gastric Bypass (RGB)
With this procedure a small stomach pouch is created by stapling part of the stomach together or vertical banding. This limits how much food you can eat. Then, a Y-shaped section of the small intestine is attached to the pouch to allow food to bypass the duodenum as well as the first portion of the jejunum. This is demonstrated below:
2. Biliopancreatic diversion Gastric Bypass (BPD)
In this more complicated version, portions of the stomach are removed and the small pouch that remains is connected directly to the final segment of the small intestine. This means that most of the small intestine (duodenum and jejunum) is bypassed, resulting in substantial reductions in calorie and nutrient absorption.
Frequently Asked Questions (FAQ)
We have listed here some of the more commonly asked questions from our patients about the Gastric Bypass procedure.
Q: How do I know if I’m suitable for gastric bypass surgery?
Usually patients most suitable to have a gastric bypass are those with a BMI in the range of 40 to 60+. However surgery is dependent upon a bariatric surgeon’s opinion. All of our weight-loss surgery patients have an in depth consultation to discuss the most relevant procedure for them,prior to surgery.
Q: How long does gastric-bypass surgery take?
This depends on the patient, the surgeon and whether it is being done as an open or closed (keyhole) procedure. Open gastric bypass operations usually take 90-120 minutes, but laparoscopic bypasses may take up to twice as long to perform.
Q: How long will I be in hospital?
For open operations, most patients are discharged on the third or fourth post-operative day. Patients who have the laparoscopic procedure can go home on the second or third post-operative day.
Q: What are the benefits of gastric bypass surgery?
For the seriously obese, the benefits of the gastric bypass procedure tend to outweigh the risks. In general*:
- 75% of patients are expected to lose 75 to 80% of their excess body weight, most of which is lost in the first two years following surgery
- Improvements in risk factors for heart disease and cancer
- Around 70-80% of patients with hypertension will be off medication and cholesterol levels will fall
- Most type II diabetics will be cured
- There will be improvements in a whole range of weight-associated conditions. These could include sleep apnoea, asthma, joint pain, arthritis, reflux, fatigue, shortness of breath
- Patients report less depression, improved self-esteem and confidence along with an overall increased sense of well-being
Q: What are the risks of gastric bypass surgery?
As with any surgery, there are operative and long-term complications and risks associated with gastric bypass, including:
- Bleeding (haemorrhage).
- Complications due to anaesthesia and medications.
- Pulmonary emboli (blood clots on the lung).
- Deep vein thrombosis.
- Dehiscence (wound breakdown).
- Leaks from staple line.
- Injury to the spleen.
- Marginal ulcers.
Unlimited Aftercare & Dietitian Support
Whether you have a gastric band, bypass, sleeve or balloon, your weight loss procedure is only the start of your journey. All these procedures are good tools for weight loss and you can lose body weight, but it’s not entirely effortless*. You DO have to work with it and you DO need aftercare following obesity surgery.
That’s why The Hospital Group includes market-leading aftercare packages with all our obesity procedures. We ensure that you are supported every step of the way with dietary and exercise advice to help you get the best weight loss result for you.
We believe it’s the best aftercare support package available and it’s designed to help you get the best weight loss results.
Gastric Bypass Aftercare
Unlimited Gastric Bypass aftercare support package
- Access to our specialist weight-loss support team which includes a bariatric surgeon, dietitians and nurses
- 6 months surgical cover
- Post-operative assessment
- 24 hour emergency telephone helpline
- A free no obligation cosmetic surgery consultation with a GMC registered cosmetic surgeon, plus a £500 cosmetic surgery voucher
If you would like to learn more regarding this weight loss surgery procedure then book a free, no obligation consultation with a GMC registered bariatric surgeon and dedicated patient care co-ordinator. At your consultation you will be able to discuss the procedure in detail and ask any questions you may have. Many of our patient care co-ordinators have in fact had a procedure themselves so can share their experience with you first hand.
*There is no guarantee of specific results and that the results can vary.