What can happen if you get too much anesthesia during surgery?

Too much: Too much is a relative term. It depends on the type of surgery and if anethesia is local or general.

Either the l: Anesthesiologist will give medications to counter act the impact of the meds, like age ta to increase the blood pressure, or you will be kept asleep longer after the surgery to let the medications wear off. This usually does not happen.

Decrease BP: The amount of anesthetic drugs used to put you to sleep is judged by your weight and your medical history. Once you are asleep you are usually kept in this state by breathing an anesthetic gas. The anesthesiologist will be monitoring your vital signs during the case to make sure you don't get too much anesthesia. This can be seen by a drop in blood pressure, change in heart rate, or other factors.