Efficacy of a behaviorally based voice therapy protocol for vocal nodules

Area of Science:

• Otolaryngology
• Speech-Language Pathology
• Voice Science

Background:

• Vocal nodules are benign growths on the vocal folds, often caused by voice misuse.
• Voice therapy is a common treatment, but its specific effects on vocal function require detailed assessment.

Purpose of the Study:

• To evaluate the impact of a structured voice therapy protocol on vocal function in women with vocal nodules.
• To analyze perceptual and physiological changes associated with different phases of voice therapy.

Main Methods:

• Eleven women with vocal nodules underwent a behaviorally based voice therapy protocol.
• Perceptual voice quality was assessed by six speech-language pathologists using randomized audio recordings.
• Videostroboscopic evaluations were conducted by two laryngologists before and after therapy.

Main Results:

• Significant improvements were observed in overall dysphonia, roughness, vocal fry, and "scrape."
• No significant changes were noted after the initial vocal hygiene phase, but improvements followed respiration and direct facilitation.
• Videostroboscopy showed reduced nodule size and edema in most participants, though complete resolution was not achieved.

Conclusions:

• Voice therapy positively influences vocal function and quality in individuals with vocal nodules.
• Perceptual voice parameters effectively reflect the therapeutic alterations in vocal function.
• While not curative, voice therapy offers significant benefits for managing vocal nodules and improving voice quality.