Nausea, dry mouth, vomiting, sore throat, shivering, sleepiness, mild hoarseness and pain are side effects of anesthesia following surgery, according to the Mayo Clinic. The probability of any of these side effects occurring depends on the type of surgery involved and the patient's condition. Doctor-prescribed medications can reduce these symptoms.
Before the patient is given anesthesia, he undergoes a general assessment that includes discussion of health history, medication/supplement usage, allergies and prior experiences with anesthesia, as stated by the Mayo Clinic. Anesthesia is usually administered through an intravenous line in the arm, although it can also be breathed in through a mask. During the procedure, medical personnel continuously monitor the patient's state and make adjustments as necessary to medication. In complex surgeries, blood transfusions may be needed while the patient is under anesthesia.