The movement of adductor pollicis muscle was continuously measured by stimulating the ulnar nerve in a train-of-four (TOF) mode. Then endotracheal intubation was performed immediately after T1 disappeared.

• 对尺神经作4个成串刺激(TOF),连续监测拇收肌收缩情况,待TOF第1个颤搐反应高度(T1)完全消失时行气管插管。