Gastric bypass surgery

LAPAROSCOPIC BILIARY GASTRIC BYPASS (ROUX-EN-Y)


Our experienced surgeons specialise in minimally invasive procedures to aid weight loss, including gastric bypass

Enquiries & Appointments

What is a gastric bypass?

Excess weight is known to increase the risk of serious conditions including diabetes, hypertension and heart disease.

If your body mass index (BMI) is over 35, gastric bypass surgery can help you achieve long-term weight loss, improving your overall health and allowing you to participate more fully in the activities you enjoy.

Need to know

The gastric bypass involves stapling the stomach to produce a much smaller stomach, which will reduce from the size of the stomach from that of a Galia melon to the size of an egg. The second part of the operation involves bypassing the digestive secretions that are normally involved in absorption of foods.

A loop of the small bowel is bought up to the new small stomach and connected to this. This new configuration bypasses the digestive secretions for half of the bowel length. Eventually food and secretions will remix half way down the bowel.

The procedure is under general anaesthetic.

Your consultant will explain the procedure to you and answer any questions you may have. They'll let you know how to prepare, including any special dietary requirements in the days leading up to your procedure.

Because you'll be having general anaesthetic, they'll also let you know how long you should avoid eating and drinking beforehand. Like all procedures, there may be some risks and side effects involved. Your consultant will explain these to you.

The morning after surgery you should be able to walk around your private room, use the bathroom and shower. You should be able to sit comfortably and drink tea, smoothies or milk. Your pain should be well controlled with soluble painkillers.

Some patients will be keen to go home the day after surgery but most will prefer to stay and relax in the hospital and return home after the second night.

You will need to take 1 or 2 weeks off work.

Our gastric consultants

We're proud to work with leading experts across a range of medical fields, whose skills are matched by their integrity and compassion.

Our Gastric bypass surgery locations

The Wellington Hospital

The Wellington Hospital

8A Wellington Place NW8 9LE London
London Bridge Hospital

London Bridge Hospital

27 Tooley Street SE1 2PR London
The Princess Grace Hospital

The Princess Grace Hospital

42-52 Nottingham Place W1U 5NY London
The Shard Outpatients

The Shard Outpatients

The Shard, 32 St Thomas Street SE1 9BS London
London Digestive Centre

London Digestive Centre

41 Welbeck Street W1G 8EA London

Patient stories

This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.