The mini gastric bypass is sometimes called one anastomosis or single anastomosis bypass, and is an alternative to the traditional Roux-en-Y bypass procedure. While they offer similar weight loss and general health benefits, the mini bypass is a simpler, quicker procedure which can be more effective for many patients.
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This type of surgery works by restricting the amount of food that you can eat at one time and alters the hormones in the gut which are responsible for appetite control. The stomach is made much smaller and, through the use of a loop, food eaten misses out a segment of the upper gut, resulting in less absorption of calories and nutrients.
There are two main differences between these gastric bypass procedures; the first is that the mini bypass operation takes a shorter length of time, as it involves just one join being made between the stomach and the bowel as opposed to the standard procedure, which has two. The second is that the bowel is not cut through and re-attached to the stomach in a mini bypass. In addition, there is a lower risk of an internal hernia with mini bypass surgery when compared to the traditional bypass due to fewer calories.
A mini gastric bypass could help you lose a significant amount of weight and, in turn, bring other benefits such as increased self-confidence. This surgery has specific benefits, including:
The mini bypass is a relatively safe procedure, but it still comes with its own risks and side effects. These can include:
General anaesthetic is required for this procedure, so you should be aware of the risks and side effects that come with this.
Mini bypass surgery is carried out under general anaesthetic, so you’ll be asleep for the duration of the operation, which takes 60 – 90 minutes.
To begin with, your surgeon will make small incisions at the top of your abdomen. Through the insertion of a small camera attached to a long, thin tube, your surgeon will be able to see the inside of your stomach and divide it with a laparoscopic stapler to create a small ‘tube’ of stomach. This is where anything that is eaten will go, meaning that only a very small amount of food will be able to be consumed at any one time.
Next, your surgeon will loop a length of bowel around 150cm long and join it to the lower part of the newly-created smaller stomach. This means that food passes from the stomach into the small bowel, meeting the digestive juices produced in the larger part of the stomach. By ‘bypassing’ the 150cm of bowel, the calories and nutrients in what you eat are absorbed in the bowel, so you lose weight by consuming fewer calories.
A mini bypass may be an option for you if you’re looking to lose weight via gastric surgery but want the procedure to be less invasive and performed as quickly as possible, with a lower risk of complications after treatment. Recovery from the mini bypass can be faster, and it is also easier to reverse this type of surgery when compared to the standard gastric bypass.
Both types of bypass surgery can result in the loss of up to 70-80% of excess weight.
If you suffer from acid reflux, then a mini bypass may not be right for you. This is because it may make the symptoms worse. When you have a consultation with one of our weight management experts, they’ll be able to give you advice as to whether a mini bypass is an option for you.
After your procedure, you’ll spend a night in hospital to make sure that your recovery is progressing as it should. When you’re ready to go home, you should make sure that you have someone to pick you up and help you get settled on your return. You’ll need to take at least a week off from work and should try to rest for the first few days.
Your surgeon or nutritional adviser will give you instructions regarding what you can and cannot eat following surgery. For the first 4 weeks, you’ll need to follow a post-op diet consisting of liquids, soft and pureed foods. After this period, you can begin to reintroduce textured food as your body adjusts to the mini bypass.
For the first few weeks, you might experience some discomfort and tiredness which will ease as your body gets used to the changes in your digestive system. After 4 weeks, you can gradually start to incorporate exercise into your daily routine to help your weight loss progress.
I’m in a great place to help you with your weight management journey because I’ve been through weight loss surgery myself.
It was a year after the first lockdown and my weight was getting me down. I was starting to avoid social events, and my confidence was at an all-time low. Having tried many diets unsuccessfully, I started to look into weight loss surgery. Shortly after, I had my gastric bypass surgery. That’s why I’ve joined the team here at Klinikal, as I know exactly how it feels to go through this journey and how I can best support you.
I’m almost 2 years on, and my life has never been better. I’m happy, feeling great and I’ve met the love of my life – all things that didn’t seem possible before my surgery. In total, I’ve lost 7.5 stone, but I’ve gained confidence, peace of mind and find myself just really loving life now.
Our highly experienced team have helped 1000’s of patients achieve their weight loss goals.
Dietetic support programme tailored to your needs
Localised care – clinics and hospitals near you
World-class General Medical Council Registered Bariatric Surgeons
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Deciding to have weight loss surgery can be really empowering. But to help you make an informed decision, you need to understand the surgical process and what your journey will involve. At Klinikal, we know that this is important.
We’ve summarised each stage of the journey to give you an idea, but of course your experience will be tailored to your own needs.
Nice to meet you!
Your journey with us begins with a call from a weight management surgeon assistant. One of our highly experienced, friendly surgeon assistants will talk you through our weight loss procedures, pricing and finance options, and answer any questions that you might have.
Meet your surgeon
After speaking to your surgeon assistant, they’ll match you with the right bariatric surgeon for your procedure. You’ll meet them via video call, where they’ll take you through your surgery in more detail. If required, you’ll meet your surgeon in person.
Meet your dietitian
Your dietitian will be an important part of your weight loss journey. Before your surgery day, you’ll meet them to go through the dietary changes that you’ll need to make pre and post-surgery. They’ll give you plenty of advice and will be able to answer any dietary questions that you might have.
Pre-op nurse appointment
It’s important that you’re fit to go ahead with your surgery. That’s why we’ll schedule in an appointment with one of our lovely nurses, who’ll make sure that you’re well enough to proceed.
Surgery day
It’s the day you’ve been waiting for! We’ll welcome you into one of our Klinikal locations where you’ll settle into your private room. You’ll then head down to theatre to have your procedure. Afterwards, you’ll be taken back to your luxurious suite to recuperate.
Post-op and beyond
Once you return home to recover, you’ll have our full support. You’ll have post-op appointments with a nurse and you’ll see your surgeon again to make sure that you’re recovering nicely. Your surgeon assistant and dietitian will also be in touch regularly, and you can call our helpline if you have any issues.
Nice to meet you!
Your journey with us begins with a call from a weight management surgeon assistant. One of our highly experienced, friendly surgeon assistants will talk you through our weight loss procedures, pricing and finance options, and answer any questions that you might have.
Meet your surgeon
After speaking to your surgeon assistant, they’ll match you with the right bariatric surgeon for your procedure. You’ll meet them via video call, where they’ll take you through your surgery in more detail. If required, you’ll meet your surgeon in person.
Meet your dietitian
Your dietitian will be an important part of your weight loss journey. Before your surgery day, you’ll meet them to go through the dietary changes that you’ll need to make pre and post-surgery. They’ll give you plenty of advice and will be able to answer any dietary questions that you might have.
Pre-op nurse appointment
It’s important that you’re fit to go ahead with your surgery. That’s why we’ll schedule in an appointment with one of our lovely nurses, who’ll make sure that you’re well enough to proceed.
Surgery day
It’s the day you’ve been waiting for! We’ll welcome you into one of our Klinikal locations where you’ll settle into your private room. You’ll then head down to theatre to have your procedure. Afterwards, you’ll be taken back to your luxurious suite to recuperate.
Post-op and beyond
Once you return home to recover, you’ll have our full support. You’ll have post-op appointments with a nurse and you’ll see your surgeon again to make sure that you’re recovering nicely. Your surgeon assistant and dietitian will also be in touch regularly, and you can call our helpline if you have any issues.
How much weight you lose after a bariatric procedure can depend on how you adapt your lifestyle after surgery. Both types of bypass surgery restrict how much you can eat and change your digestive system, meaning that you absorb less food and fewer calories. Studies have shown that both procedures can typically result in patients losing around 63% of their excess weight following treatment.* It’s important to keep following your post-op diet and change how you eat long term, as well as exercising and leading a healthy lifestyle to help maintain your weight loss.
*The United Kingdom National Bariatric Surgery Registry of the British Obesity & Metabolic Surgery Society, 2020
There are different types of weight loss – or ‘bariatric’ – surgery which can help you to lose weight and keep it off for the long term. However, the only way to know which will be the best option for you is to have a consultation with a Klinikal surgeon. They’ll take into account factors such as your lifestyle, current health and weight loss goals, and if you’re suitable for surgery, they’ll advise whether a mini bypass, standard bypass, gastric sleeve or gastric band would be the most suitable procedure for you.
Because the mini bypass procedure is less invasive than the standard procedure, reversal is possible. No part of the stomach is removed – staples are used to divide the stomach into two sections – and so by removing the staples, the stomach can go back to its original size.
However, generally a reversal is not recommended unless the patient is experiencing serious complications, as a second surgical procedure can be more complicated than the original. It’s important to consider all the options carefully when you are discussing your weight loss procedure with your surgeon at your consultation.
Losing weight by any means will help to improve a wide range of medical conditions. These can include type 2 diabetes, high blood pressure, asthma, cardiovascular disease and sleep apnoea. By losing weight, you can also reduce the risk of developing heart disease, stroke, angina, some cancers, back and joint pain and fertility issues.
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