Photoelectric measurement of laryngeal paralyses correlated with videostroboscopy.
Photoglottography and electroglottography are relatively noninvasive techniques that provide detailed information about vocal fold vibration. However, few significant clinical applications have been made by correlating photoelectric waveforms to specific pathologic changes in laryngeal vibration. Videostroboscopy has recently been used to document vibratory patterns of laryngeal paralyses in a canine model of phonation. A study of PGG and EGG waveforms correlated with videostroboscopy in an in-vivo canine model of phonation with simulated unilateral recurrent or superior laryngeal nerve paralysis is presented. The shift quotient--a new glottographic parameter which identifies flaccid laryngeal paralyses--is presented.
Trapp
T K
TK
UCLA Division of Head and Neck Surgery 90024.
Berke
G S
GS
D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D007823:Laryngeal Nerves / Q000503:physiopathology; D008027:Light; D008297:Male; D010036:Otolaryngology / Q000379:methods*; D010699:Phonation; D012009:Recurrent Laryngeal Nerve / Q000503:physiopathology; D014826:Vocal Cord Paralysis / Q000175:diagnosis / Q000503:physiopathology*