Optimal Arytenoid Adduction Based on Quantitative Real-Time Voice Analysis

Matthew R. Hoffman; Ketan Surender; William J. Chapin; Rachel E. Witt; Timothy M. McCulloch; Jack J. Jiang

doi:10.1002/lary.21346

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Optimal Arytenoid Adduction Based on Quantitative Real-Time Voice Analysis

Journal article

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Optimal Arytenoid Adduction Based on Quantitative Real-Time Voice Analysis

Matthew R. Hoffman, Ketan Surender, William J. Chapin, Rachel E. Witt, Timothy M. McCulloch and Jack J. Jiang

The Laryngoscope, Vol.121(2), pp.339-345

02/01/2011

DOI: 10.1002/lary.21346

PMCID: PMC3137289

PMID: 21271585

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https://www.ncbi.nlm.nih.gov/pmc/articles/3137289View

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Abstract

Hypothesis: The optimal degree of arytenoid rotation for arytenoid adduction (AA) can be determined using quantitative real-time voice analysis. Study Design: Repeated measures with each larynx serving as its own control. Methods: Unilateral vocal fold paralysis (VFP) was modeled in five excised canine larynges. Medialization laryngoplasty (ML) was performed, followed by AA. The optimal degree of arytenoid rotation was determined using real-time measurements of vocal efficiency (V-E), percent jitter, and percent shimmer. After the optimal degree of rotation was determined, the arytenoid was hypo- and hyperrotated 10% +/- 2% of the optimal angle to mimic hypoadducted and hyperadducted states. Aerodynamic, acoustic, and mucosal wave measurements were recorded. Results: Mean optimal angle of arytenoid adduction was 151.4 +/- 2.5 degrees. V-E differed significantly across experimental conditions (P = .003). Optimal AA produced the highest V-E of any treatment, but this value did not reach that produced in the normal condition. Percent jitter (P < .001) and percent shimmer (P < .001) differed across groups and were lowest for optimal AA. Mucosal wave amplitude of the normal (P = .001) and paralyzed fold (P = .043) differed across treatments. Amplitude of both folds was highest for optimal AA. Conclusions: V-E and perturbation parameters were sensitive to the degree of arytenoid rotation. Using real-time voice analysis may aid surgeons in determining the optimal degree of arytenoid rotation when performing AA. Testing this method in patients and determining if optimal vocal outcomes are associated with optimal respiratory and swallowing outcomes will be essential to establishing clinical viability.

Life Sciences & Biomedicine

Medicine, Research & Experimental

Otorhinolaryngology

Research & Experimental Medicine

Science & Technology

Details

Title: Subtitle: Optimal Arytenoid Adduction Based on Quantitative Real-Time Voice Analysis
Creators: Matthew R. Hoffman - University of Wisconsin–Madison
Ketan Surender - University of Wisconsin–Madison
William J. Chapin - University of Wisconsin–Madison
Rachel E. Witt - University of Wisconsin–Madison
Timothy M. McCulloch - University of Wisconsin–Madison
Jack J. Jiang - University of Wisconsin–Madison
Resource Type: Journal article
Publication Details: The Laryngoscope, Vol.121(2), pp.339-345
DOI: 10.1002/lary.21346
PMID: 21271585
PMCID: PMC3137289
NLM abbreviation: Laryngoscope
ISSN: 0023-852X
eISSN: 1531-4995
Publisher: Wiley
Number of pages: 7
Grant note: R01DC008850 / NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Deafness & Other Communication Disorders (NIDCD) R01 DC008153; R01 DC05522; R01 DC008850 / NIH, National Institute on Deafness and other Communicative Disorders; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Deafness & Other Communication Disorders (NIDCD)
Language: English
Date published: 02/01/2011
Academic Unit: Otolaryngology
Record Identifier: 9984366372802771

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