Advanced Analgesia on the Quality of Recovery After General Anesthesia in Elderly Patients

According to the drug use, the subjects were divided into group A, which was continuously injected with normal saline during the operation, and intravenously injected with 5 mL normal saline 30 minutes before the end of the operation. In group B, DEX 0.5μg/kg was injected intravenously during the operation, which was completed in 10 min, and Nalbuphine 0.20 mg/kg (5 mL) was injected intravenously 30min before the end of the operation. After the operation, all anesthetic drugs were stopped and the patient was transferred to PACU with intubation.