Skip to main content Accessibility help

Normalisation of voice parameters in patients with unilateral vocal fold palsy: is it realistic?

  • R Kumar (a1), N Banumathy (a1), P Sharma (a1) and N K Panda (a1)



Disorders of voice can limit an individual's participation and impair social interaction, thus affecting overall quality of life. Perceptual and objective evaluations can provide the clinician with detailed information regarding voice disorders.


This study comprised 40 subjects aged 34–46 years, 20 of whom (10 male, 10 female) had unilateral vocal fold palsy. Data were obtained for all participants from: the Voice Handicap Index, the grade, roughness, breathiness, asthenia and strain (‘GRBAS’) scale, acoustic voice analysis, electroglottography, and voice range profiles.


The voice evaluations revealed statistically significant (p < 0.05) differences between the controls and study group, both in males and females, pre- and post-therapy.


Despite the normalisation of vocal parameters, acoustic, perceptual and self-rated assessments revealed statistically significant differences after therapy. Hence, acoustic measures, namely electroglottographic perturbation, and voice frequency and intensity range, are recommended prior to termination of therapy.


Corresponding author

Author for correspondence: Rawish Kumar, Speech and Hearing Unit, Department of Otolaryngology, Postgraduate Institute of Medical Education and Research, Chandigarh, India E-mail:


Hide All

R Kumar takes responsibility for the integrity of the content of the paper



Hide All
1Ahmad, S, Muzamil, A, Lateef, M.A study of incidence and etiopathology of vocal cord paralysis. Indian J Otolaryngol Head Neck Surg 2002;54:294–6
2Alvarenga, EHL, Cruz, OLM, Carrara-de-Angelis, E, Fury, CLB, Mourão, LF, Kowalski, LP.Laryngeal Paralysis. Speech-Language Pathology Cancer of the Head and Neck. São Paulo: Lovise Publishing House, 2000;81–8
3Heuer, RJ, Sataloff, RT, Emerich, K, Rulnick, R, Baroody, M, Spiegel, JR et al. Unilateral recurrent laryngeal nerve paralysis: the importance of “preoperative” voice therapy. J Voice 1997;11:8894
4Jacobson, BH, Johnson, A, Grywalski, C, Silbergleit, A, Jacobson, G, Benninger, MS et al. The Voice Handicap Index (VHI): development and validation. Am J Speech Lang Pathol 1997;6:6670
5Hirano, M.Clinical Examination of Voice. Disorders of Human Communication. New York: Springer-Verlag, 1981;xi
6Mangilli, LD, Amoroso, MRM, Nishimoto, IN, Barros, APB, Carrara-de-Angelis, E.Voice, deglutition and quality of life of patients with unilateral vocal fold mobility change before and after speech therapy. Rev Soc Bras Fonoaudiol 2008;13:103–12
7Titze, IR, Talkin, DT.A theoretical study of the effects of various laryngeal configurations on the acoustics of phonation. J Acoust Soc Am 1979;66:6074
8Rothenberg, M.Some relations between glottal air flow and vocal fold contact area. ASHA Reports 1988;11:8896
9Herzel, H, Berry, D, Titze, I, Steinecke, I.Nonlinear dynamics of the voice-signal analysis and biomechanical modeling. Chaos 1995;5:30–4
10Titze, IR.Fascinations with the Human Voice. Salt Lake City: National Center for Voice and Speech, 2010;158


Normalisation of voice parameters in patients with unilateral vocal fold palsy: is it realistic?

  • R Kumar (a1), N Banumathy (a1), P Sharma (a1) and N K Panda (a1)


Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed