Stopping eating and drinking before surgery
Unless you are having a local anaesthetic, you have to stop eating and drinking for a period of time on your operation day so you can have your anaesthetic safely. But, you can help speed up your recovery if you keep your body energy stores and fluid levels up in the days before having surgery.
The day before surgery
If you are having bowel or weight loss surgery, you must follow the advice the surgical team give you.
For other surgery, you should eat and drink as normal. We recommend you have a carbohydrate-rich meal and a snack of about 100g of carbohydrate on the evening before your surgery.
The day of surgery
Eating: do not eat any food (including chewing gum and milk) for six hours before you come to the hospital for your surgery. Please do not eat after 2am if you surgery is in the morning.
Drinking: you may drink water, and if pre-assessment give you them, the two pre-operation (pre-op) supplement drinks, until two hours before your surgery. If you are coming to hospital for 7am, your surgery could be any time from 8:30, so you need to stop drinking by 6:30am.
What are preop drinks?
During your pre-assessment, you may be given two clear, sweet carbohydrate-rich drinks. These are called preOp and come in two x 200 ml cartons. The drinks:
- give you energy to help you recover after surgery
- reduce the risk of nausea (sickness)
- help your wounds to heal
Remember, pre-op drinks are not the same as nutritional supplements such as Fresubin 2kcal and Complan – these are food and you should not take them six hours before surgery. Don’t take preop drinks if you have insulin dependent diabetes or delayed gastric emptying.