Why can't I eat or drink before cancer surgery?

Before surgery, a nurse may tell you that you cannot eat or drink for a certain period of time. It is important to follow these instructions carefully—if you do not, your surgery may need to be rescheduled.

Before surgery you may also be told how to prepare and about tests you need, such as blood tests, a chest x-ray, or an electrocardiogram (ECG).

Your surgical team will give you exact instructions about when to stop eating and drinking. If anything is unclear, ask them—they are the best source of guidance for your operation.