Preparing For Surgery

Article explaining what bariatric surgery is and highlighting the differences between the procedures

Your pre-operative medical assessment

There are two very important steps you must complete before you can have gastric sleeve surgery. If you fail to complete both your procedure cannot go ahead.

Hospital Assessment

You will be given an appointment to attend for a medical assessment, usually at the hospital at which your procedure will take place. At this appointment bloods will be taken and a general medical screening will be undertaken including medical history, medication etc and to take measurements such as height, weight and blood pressure. 

Telephone Assessment

You will receive a telephone call from one of our Bariatric Nurses to complete a final pre-operative admission assessment. This information is essential to complete your booking and allow hospital admission. This call is the final sign off for your procedure.

Going to Hospital – what you need to know


You will receive written notification from the hospital or a telephone call from Healthier Weight confirming your admission details.

Items to bring with you

Please bring with you nightwear, essential toiletries, a dressing gown and slippers. You also need to bring comfortable clothes to travel home in, for example, loose trousers with an elasticated waist.

If you are using a continuous airways pressure (CPAP) machine for sleep apnoea, please ensure you take this to the hospital with you.

What will happen on the day

On the day of admission, you will be taken to the ward where the nursing staff will carry out baseline observations (pulse, temperature and blood pressure etc.) and complete the standard admission forms.

You will be seen by your consultant who will go through the consent form with you. In essence the consent is to confirm your understanding of the procedure, together with the risks and benefits. If you have any concerns or questions, please ensure you raise these with your doctor before signing the consent form.

Before going to theatre, you will usually be given an injection of heparin which helps to thin the blood, thereby reducing the risks of clots.

The anesthetist will either see you on the ward or in the anaesthetic room adjacent to the operating theatre.

When you arrive in the operating department, you will be seen by the anesthetist who will place a mask lightly over your face and then place a small needle (cannula) in the back of the hand. A drip will be connected to the cannula so the fluids can be given during the procedure. The anesthetist will then administer the anaesthetic agent and you will go quietly off to sleep.  

You will be fitted with a pair of anti-embolism (TED) stockings which you will be required to wear throughout your hospital stay and for 10-14 days after surgery.

You will also have special compression boots (e.g Flotron) which will compress the veins in the legs, again reducing the risks of any blood clots.

In the operating room, the surgical team will be ready and you will be attached to sophisticated monitoring equipment for the duration of the procedure.

Regular medication

As a general rule, you will be asked to take your regular medication on the day of the surgery (with a very small amount of liquid). However, certain types of medication, for example anticoagulants or drugs for diabetes, may require more specific management and you will be advised about this before your admission. In some circumstances (for example, if you are diabetic) you may be asked to come in to hospital on the evening before the day of the surgery, so that specific tests can be carried out and medication adjusted accordingly.

Note: Please ensure that you take your regular medication with you to the hospital in its original package.

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