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  • Title: The Value of Vocal Extent Measure (VEM) Assessing Phonomicrosurgical Outcomes in Vocal Fold Polyps.
    Author: Salmen T, Ermakova T, Möller A, Seipelt M, Weikert S, Rummich J, Gross M, Nawka T, Caffier PP.
    Journal: J Voice; 2017 Jan; 31(1):114.e7-114.e15. PubMed ID: 27112100.
    Abstract:
    OBJECTIVE: This study aimed to present vocal extent measure (VEM), demonstrate its changes with phonomicrosurgical treatment in patients with vocal fold polyps (VFPs), and to compare its performance to that of established vocal parameters. STUDY DESIGN: This is an individual cohort study. METHODS: Microlaryngoscopic ablation was executed in 61 patients with manifestation of VFP (28 male, 33 female; 45 ± 13 years [mean ± SD]). Analysis of treatment outcome was based on pre- and postoperative voice function diagnostics and videolaryngostroboscopy. Examination instruments were: auditory-perceptual voice assessment (roughness, breathiness, and overall hoarseness [RBH]-status), voice range profile (VRP), acoustic-aerodynamic analysis, and patients' self-assessment of voice using the voice handicap index. The VEM, a parameter not yet commonly established in phoniatric diagnostics, was calculated from area and shape of the VRP to be compared with the dysphonia severity index (DSI) concerning diagnostic suitability. RESULTS: All polyps were completely excised. Three months postoperatively, mucosal wave propagation had recovered. All subjective and most objective acoustic and aerodynamic parameters showed highly significant improvement. The VHI-9i-score decreased from 15 ± 8 to 6 ± 7 points. The average total vocal range extended by 4 ± 5 semitones, the mean speaking pitch decreased by 1 ± 2 semitones. The DSI increased on average from 2.6 ± 2.1 to 4.0 ± 2.2, VEM from 83 ± 28 to 107 ± 21 (P < 0.01). VEM and DSI correlated significantly with each other (rs = 0.65; P < 0.01). CONCLUSION: Phonomicrosurgery of VFP is an objectively and subjectively satisfactory therapy for voice improvement. The VEM represents a comprehensible and easy-to-use unidimensional measure for objective VRP evaluation. This positive measure of vocal function seems to be a compelling diagnostic addition for objective quantification of vocal performance.
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