Abstract
Objectives
For patients with glottic insufficiency disease, injection laryngoplasty is a rapid
and efficient management option that complements voice therapy. Some studies have
indicated that respiratory muscle training may also show promise in patients with
voice disorders. However, the effect of respiratory muscle training in patients with
glottic insufficiency was reported to be limited, and whether it provides additional
benefit after standard management requires further evaluation. We aimed to investigate
the effectiveness of inspiratory muscle training on glottis closure and patient-reported
voice quality in glottic insufficiency patients who had been treated with hyaluronic
acid injection.
Study Design
Retrospective observational study.
Methods
We included 46 patients with glottic insufficiency who had undergone hyaluronic acid
injection. Twenty of them had undergone inspiratory muscle training during three months.
We measured patients’ changes in glottic status according to the normalized glottal
gap area and bowing index, as well as voice quality of life according to the voice
handicap index 10 and the voice outcome survey, before and after training.
Results
Patients who underwent inspiratory muscle training had higher odds of experiencing
better improvement in all scores. The range of odds ratios ranged from 2.5 to 6.3
for changes in scores, and from 3.8 to 22.2 for changes in score percentages. Of note,
the effect of training on percentage changes in the normalized glottal gap area score
was significant (P= 0.0127) after adjustment for the duration of vocal disease, body mass index and
BMI, and history of gastroesophageal reflux disease.
Conclusions
Inspiratory muscle training can improve the glottal gap after injection laryngoplasty,
and may be applied in clinical practice.
Key Words
Abbreviations:
BI (bowing index), CAPE-V (consensus auditory-perceptual evaluation of voice), EMT (expiratory muscle training), GERD (gastroesophageal reflux disease), GRBAS (grade, roughness, breathiness, asthenia, and strain), HA (hyaluronic acid), IA (injection augmentation), IMT (inspiratory muscle training), IQR (interquartile range), MEP (maximal inspiratory pressure), NGGA (normalized glottal gap area), PEF (peak expiratory flow), QOL (quality of life), RMT (respiratory muscle training), VHI-10 (Voice Handicap Index 10), VOS (voice outcome survey)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: December 10, 2022
Accepted:
October 24,
2022
Publication stage
In Press Corrected ProofFootnotes
Funding: The authors did not receive support from any organization for the submitted work.
Identification
Copyright
© 2022 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
