Mean contact quotient using electroglottography in patients with multiple sclerosis.
J Voice
; 27(4): 506-11, 2013 Jul.
Article
in En
| MEDLINE
| ID: mdl-23583207
ABSTRACT
OBJECTIVE:
To compare the mean and standard deviation (SD) of the contact quotient (CQ) of the sustained vowels ([a] and [e]) in multiple sclerosis (MS) patients versus controls. STUDYDESIGN:
Cross-sectional study. MATERIALS ANDMETHODS:
Thirty-nine subjects (24 patients and 15 controls) participated in this study. Laryngeal electroglottography was performed on all subjects while phonating the vowels [a] and [e] at a comfortable pitch and loudness. The fundamental frequency, mean CQ, SDs, and jitter were computed for both vocal tasks.RESULTS:
The mean age of the MS group was 36.25+10.61 years. All laryngeal examinations were normal and five patients with MS had dysphonia described as voice breaks and fatigue in connected speech. For both vowels [a] and [e], the mean closed quotients were comparable in groups, MS and control (43.90 vs 53 for [a] and 44.75 vs 43.63 for [e]) with no significant difference. When comparing five MS patients with dysphonia versus controls, for the vowel [a], the mean closed quotient was significantly lower in MS patients with dysphonia (P values of 0.043).CONCLUSION:
The mean closed quotient for sustained vowels [a] and [e] are comparable in MS patients and healthy controls except in patients with dysphonia.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phonation
/
Speech Acoustics
/
Voice Quality
/
Electrodiagnosis
/
Dysphonia
/
Glottis
/
Multiple Sclerosis
Type of study:
Etiology_studies
/
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Voice
Journal subject:
OTORRINOLARINGOLOGIA
Year:
2013
Type:
Article
Affiliation country:
Lebanon