For many people, the worst complications of surgery are the nausea and vomiting caused by anesthetics. Nausea and vomiting after surgery can be as miserable as post-surgery pain.
Today there are many options to prevent nausea and vomiting. The best approach is to discuss this with the anesthesia team before surgery. Tell them your past experiences with anesthesia. If you are a person who experiences nausea when you are anxious or upset, the team will be prepared to medicate you properly.