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The mini gastric bypass (also known as the single anastomosis or single join gastric bypass) is a keyhole operation which involves making a narrow pouch from your stomach. The middle portion of the small intestine is attached to this pouch which results in food bypassing most of the stomach and the upper portion of the small intestine. The mini gastric bypass causes weight loss by reducing the amount of food you can eat and reducing the amount of food which is absorbed by the intestines.

The mini gastric bypass is a powerful weight-loss surgery resulting in greater and more sustained weight-loss compared to other operations. It is a relatively new type of weight-loss surgery which is more straight-forward to perform than the more well-established roux-en-y gastric bypass.

Common Questions About Mini Gastric Bypass Surgery

Q: Is the mini gastric bypass right for me?

Our weight-loss team will always discuss the options available to you.  You may be suitable for gastric bypass surgery if you fulfil the following criteria:

-Your BMI (body mass index) is 35 or more and you have medical problems associated with your weight such as type 2 diabetes or high blood pressure.

-Your BMI is 40 or more without any medical problems associated with your weight.

-Your BMI is 30 or more and you have either been recently diagnosed with type 2 diabetes or have poorly-controlled type 2 diabetes.

The mini gastric bypass may not be an appropriate option if you have conditions such as severe underlying acid reflux and Barrett’s oesophagus or your oesophagus (food-pipe) does not function properly.

Q: How much weight will I lose?

Two years on from surgery, the gastric bypass can help you lose an average of 4/5 of your excess weight.  For example, if you are 5 foot 5 inches tall (165cm), the upper limit of a ‘healthy’ weight (a BMI of 25) is 70kg.  Any weight above 70kg is termed as ‘excess weight’.  If you weigh 110kg, your excess weight is 40kg (110kg-70kg).  On average, gastric bypass surgery would help you lose approximately 32kg.

Weight loss results can vary significantly due to a number of factors including your genes and the lifestyle choices you make once you have had surgery.  Our experts will discuss these factors with you during your consultation.

Q: What are the other benefits of the mini gastric bypass?

The mini gastric bypass is a safe procedure undertaken using keyhole surgery.  In addition to the dramatic associated weight loss, the mini gastric bypass is linked to marked improvements and resolution of many medical conditions including:

Type 2 diabetes: Complete resolution in 70% of cases.

High blood pressure: 70% of patients are able to reduce or stop medication.

High cholesterol: 95% of patients show improvement or complete resolution of abnormally high cholesterol levels.

Infertility: 95% of patients experience correction of underlying hormonal problems and restored fertility.

There are many other benefits including improvements in medical conditions such as asthma, back pain, liver disease, stress incontinence and psychological wellbeing.

Q: How does the mini gastric bypass perform compared to the ‘roux-en-y’ gastric bypass?

Compared to the roux-en-y gastric bypass, the mini gastric bypass results in slightly better weight-loss. However, patients seems to have more issues with nutritional problems in the long-term. It is important to point out that there is not enough research data on the long-term impacts of the mini gastric bypass as it is a relatively new procedure.

Q: How long will I be in hospital?

The mini gastric bypass is a procedure which takes approximately 60 to 90 minutes to perform.  It is done whilst you are asleep under general anaesthesia.  In many cases, patients can go home after an overnight stay in hospital.  A small proportion of patients require a second night in hospital.

Q: Are there any risks with the mini gastric bypass?

The gastric bypass operation is safe and effective and the risks associated with it are small.  However no procedure or surgery is risk-free. Complications in the immediate period after surgery include:

Internal bleeding

Infection of the keyhole wounds

Perforation: This includes inadvertently making a hole in a section of bowel.  This is rare and occurs in less than 1% of patients.

Leak: When the new join between the stomach pouch and the intestine does not heal correctly, this is called an ‘anastomotic leak’. Again, this rarely occurs and happens in less than 1% of patients.

DVT: A ‘deep veing thrombosis’ is another word for a clot in the leg.  These clots can rarely also travel to the lung.  We routinely prescribe you special stockings and blood thinning medication following your surgery to reduce the risk of this happening.

Death: This is very rare and occurs in less than 1 in every 300 patients.

Some of the longer-term problems which may occur include:

Poor absorption of vitamins: Your body needs certain vitamins and minerals to function properly, without which you can develop bone and nerve problems.  We will ensure that you have all the advice necessary to supplement your vitamin requirements following surgery.

Dumping syndrome: This is a collection of symptoms including diarrhoea, abdominal cramps, sweating, dizziness, headaches and fatigue which can occur after gastric bypass surgery. Some patients complain of dumping syndrome to varying degrees.  Our weight-loss experts will advise you how best to manage this should it be a problem for you.

Bowel hernia: Very rarely (in less than 1% of patients), the small intestines can twist causing a blockage and abdominal pain.  Should this happen, further surgery would be required.

Q: Will I regain weight after surgery?

Weight loss and regain following surgery relies on many factors.  It is influenced by your genes and the lifestyle choices you make following surgery.  As such, surgery should be seen as a tool to aid you in your weight-loss journey.

Most gastric bypass patients eventually gain back about 8% of the weight they lose following surgery.  1 out of every 10 patients may find that they regain all of the weight they have initially lost with the bypass.  The good news is however that most patients keep off at least 50% of their weight even 10 years following surgery.

Q: What does the price package include?

Our price for the mini gastric bypass starts from just £9,300Please contact us directly to enquire about a personalised quote.  All our weight loss packages benefit from:

-A FREE no obligation consultation with Mr Alkhaffaf.

-A full pre-operative medical assessment.

-A guarantee that will cover complications related to your surgery for 30-days.

-A comprehensive aftercare package which includes 3 follow-up consultations with Mr Alkhaffaf, dietitian reviews and support from our physiotherapists.

-Access to our patient support group.