Before undergoing any type of surgery, most of the time, your surgeon will describe the procedure to you so that you know what will happen and have an idea of what you can expect from the surgical procedure.
Upon consultation, the surgeon will also let you know what you should and should not do before the surgery.
It might also be quite helpful for you to know how you should prepare for your surgery on your own so it would not come as a shock when the doctor finally advises you on what to do.
For most surgeries, you would be asked to bathe or cleanse your body before the procedure. Some doctors will require you to use a specific bathing soap, usually issued by the clinic or the hospital, to ensure that your body will be cleansed thoroughly.
Major surgical procedures and most surgeries that involve the digestive system require fasting for hours before the scheduled surgery. The length of time for fasting depends on the type of surgery: there are procedures that require fasting for 12 hours, there is some that call for the fasting for 8 hours. During fasting, you will not be allowed to eat or drink anything.
More often than not, surgeries will involve using anesthesia on the patient to block the pain. One of the common side effects of anesthesia is drowsiness or dizziness, therefore you should prepare for it by having someone accompany you – especially on your way home from the clinic if it will be an outpatient surgery. Even if it will be an inpatient surgery, you still need someone to assist you (help you eat, help you when you need to go to the toilet, and so on).
There will also be medications that the doctor will disallow you to take prior to surgery. This could include something as common as aspirin, so you have to pay attention to what your doctor has to say to guard your own safety.