Abstract
Chang H-Y, Torng P-C, Wang T-G, Chang Y-C. Acoustic voice analysis does not identify
presence of penetration/aspiration as confirmed by videofluoroscopic swallowing study.
Objective
To investigate whether acoustic voice analysis can identify the presence of penetration/aspiration
(P/A) as confirmed by videofluoroscopic swallowing study (VFSS).
Design
Repeated measures within subjects.
Setting
Rehabilitation department in a tertiary teaching hospital.
Participants
Patients (N=44) with swallowing disorders referred for VFSS.
Interventions
Patients were asked to sustain phonations /a/ for at least 3 seconds before and after
swallowing 5mL of liquid barium during a standardized VFSS. The acoustic voice analysis
program was used to analyze vocal quality change.
Main Outcome Measures
Five acoustic parameters including average fundamental frequency, relative average
perturbation, shimmer percentage, noise-to-harmonic ratio, and voice turbulence index
were analyzed for each participant before and after swallowing during VFSS. Differences
in the pre- and postmeasures were compared between those participants who demonstrated
VFSS-confirmed P/A (n=17) and those who did not (n=27).
Results
No significant changes were noted in the 5 acoustic parameters in or between P/A and
nonpenetration/aspiration groups (P>.05).
Conclusions
As used in this study, acoustic voice analysis does not identify the presence of P/A
confirmed by VFSS.
Key Words
List of Abbreviations:
F0 (average fundamental frequency), ICC (intraclass correlation coefficient), NHR (noise-to-harmonic ratio), P/A (penetration/aspiration), RAP (relative average perturbation), SHIM (shimmer percentage), VFSS (videofluoroscopic swallowing study), VTI (voice turbulence index)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: June 20, 2012
Footnotes
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.
Reprints are not available from the author.
In-press corrected proof published online on Aug 2, 2012, at www.archives-pmr.org.
Identification
Copyright
© 2012 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
