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Comparative study of vocal function after near-total laryngectomy
M Hanamitsu1, H Kataoka, E Takeuchi
1Department of Otolaryngology, Head and Neck Surgery, Shiga University of Medical Science, Otsu, Japan.
The Laryngoscope
|August 12, 1999
Summary
Vocal function after near-total laryngectomy (NTL) and vertical hemilaryngectomy (VHL) showed similar outcomes, with no significant differences in voice quality between the two surgical methods.
Area of Science:
- Laryngology
- Speech and Voice Science
- Surgical Oncology
Background:
- Near-total laryngectomy (NTL) and vertical hemilaryngectomy (VHL) are surgical procedures that utilize laryngeal mucosa for voice production.
- Assessing and comparing vocal function after these procedures is crucial for patient outcomes.
Purpose of the Study:
- To evaluate and compare vocal function following NTL and VHL.
- To determine if the phonatory mechanisms after NTL resemble those after VHL.
Main Methods:
- Retrospective analysis of 29 patients (11 NTL, 18 VHL).
- Vocal function assessed via acoustic analysis (pitch, intensity, perturbation, noise) and aerodynamic analysis (airflow, vocal efficiency, phonation time).
- Final analysis included 8 NTL and 18 VHL patients due to data loss or inability to speak.
Main Results:
- Vocal function, excluding pitch, exhibited significant variability after both NTL and VHL.
- No statistically significant differences were observed in vocal function outcomes between the NTL and VHL groups.
Conclusions:
- Vocal function outcomes are comparable between NTL and VHL.
- Vibratory function of the arytenoid mucosa in NTL patients suggests a similar phonatory mechanism to VHL.