The investigators will recruit 80 patients undergoing AV shunt surgery. All patients will receive general anesthesia and brachial plexus block. Patients will be randomly allocated into two groups. Study and control group received propofol target-controlled infusion (TCI) and inhaled anesthetics as anesthesia maintenance, respectively. Main outcomes will be assessed by perioperative blood pressure, heart rate, respiratory rate, end-tidal CO2, analgesics dosage, pain intensity and perioperative adverse events.