Prognostic Value of Facial Nerve Antidromic Evoked Potentials in Bell Palsy: A Preliminary Study

Table 1

Stennert system.

Facial paralysis symptoms	Evaluating standard	Secondary damage	Evaluating standard
Static state		Hyperacusis	Yes
Bilateral palpebral fissure difference	≥3 mm	Taste disorder	Yes
Lower eyelid ectropion	Yes	Joint movement: Amount, eyes,; nasolabial fold, mouth and cheek
Nasolabial fold loss	Yes
Ptosis of labial angle	≥3 mm	Two among the above	Yes
Movement		Three among the above	Yes
Frown	No	Blink (secondary spasm)	Yes
Palpebral fissure could not close:		Contracture	Yes
Sleeping	Yes	Tear secretion:
Maximum stimulation	Yes	Palpebral fissure static ≥70%	Yes
Grin: upper and lower canines	Not visible	<70%	Yes
Upper lateral incisors	Not visible	0%	Yes
Whistle: distance between philtrum and mouth corner on diseased side more than that on healthy side	50%	Tear	Yes
		Acial paralysis index		Secondary damage index