Control of anesthetic depth is the primary advantage of general anesthesia with inhalational anesthetics as opposed to injectable agents. In addition, inhalational anesthetics provide good intraoperative stress reduction, adequate muscle relaxation, and an elimination pathway (lungs) independent of liver and kidney function. There is little postoperative respiratory depression and no rebound effect, which is sometimes seen with injectable anesthetics. The incidence of anesthetic-related toxicity is rare and is not considered a problem.