Influence of subglottic stenosis on the flow-induced vibration of a computational vocal fold model.

ABSTRACT: The effect of subglottic stenosis on vocal fold vibration is investigated. An idealized stenosis is defined, parameterized, and incorporated into a two-dimensional, fully-coupled finite element model of the vocal folds and laryngeal airway. Flow-induced responses of the vocal fold model to varying severities of stenosis are compared. The model vibration was not appreciably affected by stenosis severities of up to 60% occlusion. Model vibration was altered by stenosis severities of 90% or greater, evidenced by decreased superior model displacement, glottal width amplitude, and flow rate amplitude. Predictions of vibration frequency and maximum flow declination rate were also altered by high stenosis severities. The observed changes became more pronounced with increasing stenosis severity an

SUBMITTER: Smith SL 

PROVIDER: S-EPMC3596840 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature