Excised human larynges; Reinke’s edema; Phonotrauma; Contact stress
Abstract :
[en] Objective. To analyze the range of values of the contact pressure between the membranous vocal
folds with Reinke’s edema and to compare it to those observed in the absence of such a lesion.
Methods. Two human larynges were separately tested on the experimental bench, one of them with a bilateral
loose swelling of the vocal folds. Once in a glottal prephonatory configuration, airflow was increased until
achievement of self-sustained oscillations while recording aerodynamic, acoustic, electroglottographic data, and
contact pressure between the folds.
Results. We observed well-documented variations in acoustical parameters, as the decrease of the fundamental
frequency and the increase of the phonation threshold pressure. The results of the study also point to a significant
increase in the amplitude of the contact pressure in presence of the Reinke’s edema, and a lower degree of harmonicity
of the produced sounds.
Conclusion. This is the first report of ex vivo study of a larynx with Reinke’s edema. It highlights the increase in
the contact pressure during phonation, which possibly contributes to sustain the lesion once it appeared.
Disciplines :
Otolaryngology
Author, co-author :
SILVA, FABRICE; LABORATOIRE DE MECANIQUE ET ACOUSTIQUE-CNRS
LEGOU, THIERRY; LABORATOIRE PAROLE ET LANGAGE CNRS
CHAMPSAUR, PIERRE; LABORATOIRE D ANATOMIE FACULTE DE MEDECINE DE MARSEILLE
GIOVANNI, ANTOINE; LABORATORIE PAROLE ET LANGAGE CNRS
Lagier, Aude ; Centre Hospitalier Universitaire de Liège - CHU > Autres Services Médicaux > Service d'ORL, d'audiophonologie et de chir. cervico-faciale
Language :
English
Title :
Contact Pressure Between the Vocal Folds in Reinke’s Edema: Experimental Observations on an Excised Human Larynx
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