electroencephalography monitor (SedLine, Masimo) were placed, and a 22-gauge peripheral intravenous (IV) catheter was placed into the dorsum of the left hand. Following preoxygenation, general anesthesia was induced with a continuous IV infusion of remifentanil 0.3 μg/kg/min, propofol target-controlled infusion at 5 μg/mL, and an IV bolus of rocuronium 10 mg. After adequate mask ventilation was confirmed, an additional dose of rocuronium 20 mg was administered, and tracheal intubation with a standard-shaped ETT with a spiral-wound reinforcing wire (Shiley, Medtronic) was attempted