Outcomes of Cricothyroid Visor Maneuver (CVM) for Treatment of Vocal Polyp: A Case Report

  • Ali Dehqan
    Address correspondence and reprint requests to Ali Dehqan, Department of Speech therapy, School of Rehabilitation, Zahedan University of Medical Sciences, Zahedan, Iran.
    Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran

    Department of Speech therapy, School of Rehabilitation, Zahedan University of Medical Sciences, Zahedan, Iran
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Published:November 13, 2020DOI:


      The aim of the study is the clinical investigation of a patient with a vocal fold polyp, and the visual, acoustical, perceptual, and self-report changes before and after using the cricothyroid visor manoeuvre (CVM).


      A 48-year-old female university professor, gynecologist, and obstetrician with a history of laryngopharyngeal reflux and a left vocal polyp participated. Treatment was provided in 10 sessions. Pre- and post-treatment audio recordings of sustained vowels, selected sentences, and connected speech samples were submitted to auditory-perceptual and acoustical analysis to assess the effects of the two-treatment program. Also, laryngoscopic images, perceptions by the patient about her voice quality and quality of life before and after therapy were assessed.


      Improvements in acoustic parameters were obtained especially in perturbation and CCPS parameters. The overall voice quality scores on the CAPE-V were moderate before therapy and became mild after therapy. Laryngoscopy images demonstrated improvement in the glottis closure configuration in two phases (open and close) in pre- and post- CVM therapy and a decrease in polyp size. The patient had improvement in VAS, IVQLP, and VRQOL scores.


      The CVM therapy used in the study resulted in positive changes in acoustic and perceptual-auditory aspects of voice production, self-report, and QOL for the patient. The CVM approach appears to have been effective for this case in decreasing the polyp size or its regression or for vocal adaptation.

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