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Long term phonatory function following acoustic neuroma surgery: a cohort study
Raiene Telassin Abbas-Kayano1, Davi Solla1, Nicollas Nunes Rabelo1
1Department of Neurosurgery, Universidade de Sao Paulo, São Paulo, Brazil.
Acta Oto-Laryngologica
|April 30, 2020
Summary
Acoustic neuroma surgery can lead to long-term voice problems in nearly 25% of patients. Neurofibromatosis II and larger tumor size are key predictors of this post-operative dysphonia.
Area of Science:
- Otolaryngology
- Neurosurgery
- Speech and Language Pathology
Background:
- Acoustic neuroma (AN) is a known cause of neurological issues, particularly facial paralysis.
- Phonatory dysfunction after AN surgery has been under-addressed in long-term follow-up.
- This study investigates late post-operative phonatory outcomes and their predictors.
Purpose of the Study:
- To describe long-term phonatory function outcomes after acoustic neuroma surgery.
- To identify prognostic factors for post-operative dysphonia.
Main Methods:
- A cohort study of patients undergoing AN surgery between 1999 and 2014.
- Mean follow-up of 6.4 years.
- Noninvasive acoustic and aerodynamic measurements (vocal intensity, stability, MDR, TP) to assess phonatory function.
Main Results:
- 24.7% of 101 patients experienced phonatory dysfunction.
- Dysphonic patients showed reduced expiratory airflow and laryngeal hyperfunction.
- Neurofibromatosis II (NF II) and larger tumor size were significant predictors of dysphonia.
Conclusions:
- Late post-operative dysphonia affects nearly a quarter of AN surgery patients.
- Laryngeal hyperfunction secondary to reduced expiratory airflow may cause dysphonia.
- Tumor size and NF II are crucial predictors for developing post-operative dysphonia.
