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Ventricular dysphonia: a profile of 40 cases
P G Von Doersten1, K Izdebski, J C Ross
1Department of Otolaryngology, Kaiser Permanente Medical Center, Oakland, CA 94611-5693.
The Laryngoscope
|November 1, 1992
Summary
Ventricular dysphonia involves false vocal fold use during speech. Studies show it often compensates for underlying true vocal cord issues, requiring diagnosis and treatment of the root cause.
Area of Science:
- Otolaryngology
- Speech-Language Pathology
- Voice Science
Background:
- Ventricular dysphonia is a voice disorder characterized by the use of ventricular folds during phonation.
- The exact causes and underlying mechanisms remain poorly understood.
- This study investigates the characteristics of patients with this condition.
Purpose of the Study:
- To identify epidemiologic characteristics of ventricular dysphonia patients.
- To explore potential neuromuscular mechanisms and causes.
- To understand the relationship between ventricular fold use and glottic dysfunction.
Main Methods:
- Phonatory function studies including laryngovideostroboscopy, acoustic analysis, and electroglottography were performed.
- Epidemiologic, acoustic, and histologic data from 40 patients were analyzed.
- Laryngovideostroboscopy was utilized as a key diagnostic tool.
Main Results:
- 100% of patients exhibited true vocal cord (TVC) aperiodicity.
- Other common TVC abnormalities included asymmetry (65%), laryngeal mass/foreign body (35%), erythema/edema (32.5%), and bowing (22.5%).
- Ventricular dysphonia was frequently associated with underlying glottic abnormalities.
Conclusions:
- Ventricular dysphonia appears to be a compensatory mechanism for underlying glottic dysfunction.
- Effective therapy requires identification and correction of the primary laryngeal abnormalities.
- Laryngovideostroboscopy is crucial for diagnosing chronic dysphonia.