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Qualitative Voice Analysis in Patients With Head and Neck Cancer Using the Provox Voice Prosthesis.

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Smoothed cepstral peak prominence (CPPS) offers an objective measure for evaluating voice prosthesis phonation after laryngectomy. Combining CPPS with the Vocal Fatigue Index (VFI) aids effective voice rehabilitation strategies.

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Area of Science:

  • Otolaryngology
  • Speech-Language Pathology
  • Acoustic Analysis

Background:

  • Laryngectomy necessitates alternative voice restoration methods.
  • Evaluating voice quality after laryngectomy with a voice prosthesis remains challenging.
  • Objective measures for shunt phonation are lacking.

Purpose of the Study:

  • To assess the utility of acoustic analysis, specifically smoothed cepstral peak prominence (CPPS), for objectively evaluating shunt phonation.
  • To explore conditions for optimal phonation and practical rehabilitation methods post-laryngectomy.

Main Methods:

  • Eleven patients using a Provox voice prosthesis post-laryngectomy were analyzed.
  • Evaluated parameters included CPPS, Vocal Fatigue Index (VFI), Voice Handicap Index, and clinical factors.
  • Correlations between acoustic measures and patient-reported outcomes were examined.

Main Results:

  • CPPS was successfully analyzed in all patients.
  • CPPS demonstrated a significant negative correlation with VFI (r = -0.72, p = 0.01).
  • The study included patients with laryngeal and hypopharyngeal cancers, with varying reconstruction methods.

Conclusions:

  • Smoothed cepstral peak prominence (CPPS) is a valuable objective tool for assessing shunt phonation.
  • Vocal Fatigue Index (VFI) provides an easily administered subjective measure.
  • Combined use of CPPS and VFI is recommended for comprehensive voice rehabilitation planning.