Summary
Objective
The aim of this study was to aid in the distinction among hyperadductive dysphonias
by evaluating peak glottal pressure, release burst, and mid and final airflow values
across repeated /pa/ syllable trains.
Methods
Sixty subjects were assessed for aerodynamic patterns during onset-offset for the
/papapapapa/ task in modal voice. Subject groups included adductory spasmodic dysphonia
(AdSD), benign vocal fold lesion, primary muscle tension dysphonia (MTD-1), secondary
muscle tension dysphonia with an identifiable primary benign vocal fold lesion (MTD-2),
vocal fold paresis or paralysis, and normal controls.
Results
Increased peak pressure (PP) was found for AdSD and MTD-2 subjects compared with controls.
Release burst and mid airflow were not significantly different among groups. Final
airflow was significantly higher for AdSD compared with the other groups. Final airflow
was significantly lower for MTD-1.
Conclusions
Significant differences in aerodynamics are seen in subjects with AdSD compared to
MTD. AdSD was characterized by higher PP and higher final airflow. MTD-1 was characterized
by lower final airflow, whereas MTD-2 was characterized by higher PP. Aerodynamic
evaluation may aid in differential diagnosis for those patients in whom distinction
among hyperadductive disorders is challenging.
Key Words
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References
- Aerodynamic outcomes of four common voice disorders: moving toward disorder-specific assessment.J Voice. 2016; 30: 301-307
- Laryngeal aerodynamic analysis in assisting with the diagnosis of muscle tension dysphonia.J Voice. 2012; 26: 177-181
- Phonatory air flow characteristics of adductor spasmodic dysphonia and muscle tension dysphonia.J Speech Lang Hear Res. 1999; 42: 101-111
Article info
Publication history
Published online: June 29, 2017
Accepted:
April 6,
2017
Footnotes
Presented at The Voice Foundation Annual Symposium Philadelphia, PA, June 2017.
Identification
Copyright
© 2018 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
