

When you’re going in for surgery, there is always a lot to think about. For bariatric surgery, or weight loss surgery, this is truer than ever, with instructions to follow both before and after the procedure to make sure it is a success. Leading surgeon Mr Ahmed R. Ahmed is here to give his top tips for preparing for weight loss surgery.

For somebody preparing for weight loss surgery, my top tips would be:
It depends on each bariatric surgeon’s preference. Some surgeons will insist that patients lose weight before the operation; for others, it is not of any significance. However, most surgeons will ask you to follow a low-carb diet for a week or more before the procedure.

The primary reason for following a low-carb diet before surgery is because this reduces the size of the liver. A smaller-sized liver makes the operation easier for the surgeon. The reason your liver gets smaller on a low-carb diet, even if it is just for one week, is because the glycogen or starch storage of your liver gets used up. Some studies have shown that liver size can reduce by up to 1/3 by following such a low-carb diet when followed for two weeks.
The second reason surgeons recommend a diet before an operation is to check a patient’s compliance with instructions. By this, I mean if a patient is put on a pre-op diet and their weight increases, then this calls into question if they really followed the diet, and raises further questions about whether they would comply with the post-operative programme.
Each unit will have their own advice on this, but really, the essentials are:
My other advice would be to check with your surgeon how much time he wants you to stay off food and drink before the surgery. Most patients are told to eat no food from six hours before the operation, and no drink for two hours.
On the day of surgery, you’ll be taken to your room. There will be pre-operative checks, you’ll be seen by your surgeon and anaesthetist, and then taken for surgery.
Usually no more than a week – keyhole surgery means very little post-operative pain for most people. The majority of patients are back on their feet within a week.
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