Examination of aerodynamic measures and strain by vibratory source.

Full Abstract

OBJECTIVES:
Patients with laryngotracheal stenosis often require airway reconstruction. Following surgical intervention, voicing may be produced with either a glottic or supraglottic vibratory source. The objective of this study was to compare average airflow, estimated subglottal pressure, and expert perceptual rating of strain between children with glottic and supraglottic vibratory sources post-airway reconstruction.

STUDY DESIGN:
This study was a non-randomized prospective study conducted at the Cincinnati Children's Hospital Medical Center (CCHMC), Center for Pediatric Voice Disorders, and included 12 participants with a diagnosis of subglottic stenosis, post-laryngotracheal reconstruction.

RESULTS:
Expert perceptual ratings of strain were significantly higher for participants with supraglottic versus glottic voicing (P = 0.0001). Although the mean airflow measure was higher for participants with glottic phonation and mean pressure measure was higher for those with supraglottic voicing, these comparisons failed to reach significance.

CONCLUSIONS:
Patients who exhibit supraglottic phonation patterns demonstrate greater strain during speech, as well as potential alterations to aerodynamic patterns.

SIGNIFICANCE:
The significant differences in perceived strain by vibratory source are noteworthy, as perceptual quality is always a patient's motivation to seek treatment.

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Author information

Author/s: Weinrich, Barbara (B); Baker, Susan (S); Kelchner, Lisa (L); Middendorf, Janet (J); Krival, Kate (K); Elluru, Ravindhra (R); Zur, Karen B (KB);

Affiliation: Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45056, USA. weinribd(-atsign-)muohio.edu

Journal and publication information

Publication Type: Comparative Study; Journal Article

Journal: Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery (Otolaryngol Head Neck Surg), published in United States. (Language: eng)

Reference: 2007-Mar; vol 136 (issue 3) : pp 455-8

Dates: Created 2007/02/26; Completed 2007/04/12;

PMID: 17321877, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent
Case-Control Studies
Child
Child, Preschool
Female
Humans
Laryngostenosis - physiopathology; surgery
Male
Phonation - physiology
Phonetics

Phonetics
Pressure
Prospective Studies
Rheology
Speech Perception - physiology
Tracheal Stenosis - surgery
Vibration
Vocal Cords - physiopathology
Voice - physiology
Voice Disorders - etiology; physiopathology

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