Summary
Objectives
This study aimed to investigate the possible vocal impact confirmed by diagnostic
tests, the degree of perception of possible vocal impairment by patients with Unilateral
Diaphragmatic paralysis (UDP) and its correlation with ventilatory weakness.
Methods
The researchers conducted an analytical, observational and case-control study with
70 individuals, including 35 UDP patients and 35 healthy patients in a control group,
who underwent the following assessments: 1) Self-assessment of voice handicap (VHI-10);
2) Self-Assessment of Quality of Life (SF-36); 3) Self-Assessment of Dyspnea (MRC);
4) Objective vocal measures (Maximum Phonation Time (MPT) in /a/, /s/, /z/ and glottal-to-noise
excitation ratio); 5) Functional respiratory pressures (Spirometry and maximum ventilatory
pressures); 6) General degree of dysphonia – G on the GRBAS Scale. The sex, age and
body mass index (BMI) of the individuals were the variables used to match the sample
of this study.
Results
When compared with controls, patients with UDP had a restrictive functional pattern
and inspiratory weakness, with symptoms of dyspnea and worsening quality of life.
When associated with a possible vocal impact, these patients had voice handicap and
decreased MPT values for all phonemes, especially /a/. There was also a correlation
between vocal performance and inspiratory weakness. However, it should be noted that,
despite having vocal impairment, many patients did not report the perception of this
fact, somehow neglecting such impairment.
Conclusions
In addition to the expected weakness of the ventilatory muscles, patients with UDP
had clinically verified vocal impact, and those who had greater inspiratory weakness
also had greater voice impairment. Finally, it is relevant that not all patients perceived
such vocal impact, which showed a very reduced perception of this impairment in patients
with UDP.
Key Words
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Article info
Publication history
Published online: January 09, 2023
Accepted:
November 23,
2022
Publication stage
In Press Corrected ProofFootnotes
Supported by: None
Identification
Copyright
© 2022 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
