Table 3.

Standard stages of RLN monitorization during intraoperative nerve monitorization

Stage	Symbol	Procedure
I	L1	Preoperative examination of the vocal cord
II	V1	Stimulation of the ipsilateralvagus before exploration of the RLN
III	R1	Stimulation of the RLN at its first detection
IV	R2	Stimulation of the RLN after completion of dissection at the most proximal point of its exposure
V	V2	Stimulation of the vagus after achievement of hemostatic control
VI	L2	Postoperative vocal cord examination

RLN: Recurrent laryngeal nerve.