Journal article
Measurement reliability of phonation threshold pressure in pediatric subjects
The Laryngoscope, Vol.129(7), pp.1520-1526
07/01/2019
DOI: 10.1002/lary.27418
PMCID: PMC6506412
PMID: 30408173
Abstract
Objectives/Hypothesis Phonation threshold pressure (PTP), the minimum subglottal pressure (P-s) required for phonation, is sensitive to changes in laryngeal biomechanics and is often elevated with pathology. Little is reported on PTP in children; challenges with task performance and measurement reliability represent barriers to routine clinical assessment. Study Design Pilot study evaluating PTP and P-s measurement reliability in children using labial and mechanical interruption. Methods Twenty-two subjects aged 4 to 17 years (10.7 +/- 3.9 years) participated. Ten trials were performed for each method; task order was randomized. For labial interruption, subjects produced /p alpha/ five times at softest (onset PTP) and comfortable amplitude. For mechanical interruption, subjects produced a sustained /alpha/ while a balloon valve interrupted phonation five times for 250 ms each; mechanical interruption was performed with a mouthpiece and mask. PTP was recorded as the difference between P-s and supraglottal pressure at phonation cessation (offset PTP). Mean PTP and P-s and intrasubject coefficients of variation were compared. Correlations with age were evaluated. Results Mean PTP (P < .001) and P-s (P = .005) were higher for labial interruption. Intrasubject coefficients of variation for PTP (P = .554) and P-s (P = .305) were similar across methods. Coefficient of variation was related to age for mechanical-mask trials only (r = -0.628, P = .00175). Conclusions Differences in means are likely related to differences in task and PTP hysteresis effect. Reliability is comparable with all methods; using a mouthpiece may be preferable to a mask for mechanical interruption. Measurement of PTP is noninvasive, reliable, and may be a useful adjunct in pediatric voice assessment. Level of Evidence 3b Laryngoscope, 129:1520-1526, 2019
Details
- Title: Subtitle
- Measurement reliability of phonation threshold pressure in pediatric subjects
- Creators
- Matthew R. Hoffman - University of Wisconsin School of Medicine and Public HealthAustin J. Scholp - University of Wisconsin–MadisonCalvin D. Hedberg - University of Wisconsin–MadisonJim R. Lamb - University of Wisconsin–MadisonMaia N. Braden - University of Wisconsin–MadisonJ. Scott McMurray - University of Wisconsin–MadisonJack J. Jiang - University of Wisconsin–Madison
- Resource Type
- Journal article
- Publication Details
- The Laryngoscope, Vol.129(7), pp.1520-1526
- DOI
- 10.1002/lary.27418
- PMID
- 30408173
- PMCID
- PMC6506412
- NLM abbreviation
- Laryngoscope
- ISSN
- 0023-852X
- eISSN
- 1531-4995
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- R01 DC008153 / National Institutes of Health, 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) Diane M. Bless Endowed Chair, Division of Otolaryngology-Head and Neck Surgery at the University of Wisconsin-Madison, Madison, Wisconsin, U.S.A R01DC008153 / 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)
- Language
- English
- Date published
- 07/01/2019
- Academic Unit
- Otolaryngology
- Record Identifier
- 9984366290402771
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