Methods
In this prospective, randomized, double-blinded trial, 177 patients undergoing surgery under general anesthesia were randomly allocated to three groups. Patients allocated to group C (control group) received 2 mL of intravenous 0.9% saline, those allocated to group R (ramosetron group) received 0.3 mg of intravenous ramosetron, and those allocated to group DR (ramosetron plus dexamethasone group) received 5 mg of intravenous dexamethasone and 0.3 mg of intravenous ramosetron.