Correlation between dysphonia and dysphagia evolution in amyotrophic lateral sclerosis patients

Area of Science:

• Otolaryngology
• Neurology
• Speech Pathology

Background:

• Amyotrophic Lateral Sclerosis (ALS) often leads to bulbar-onset symptoms, including dysphagia (swallowing difficulties).
• Accurate assessment of dysphagia progression is crucial for patient management and quality of life.

Purpose of the Study:

• To investigate vocal parameters as potential indicators of swallowing dysfunction advancement in ALS patients.
• To explore the relationship between vocal changes and the severity of dysphagia.

Main Methods:

• Examined 27 newly diagnosed bulbar-onset ALS patients over 11 months.
• Utilized laryngology, speech pathology assessment, and spectroacoustic analysis (Praat software) for dysphonia evaluation.
• Classified patients into 4 dysphagia severity classes based on endoscopic and clinical findings.

Main Results:

• The study identified a potential vocal indicator for swallowing dysfunction in ALS.
• Preliminary findings suggest a reduction in maximum fundamental frequency correlates with advanced dysphagia.
• Spectroacoustic analysis proved fundamental in evaluating dysphonia in this patient group.

Conclusions:

• Monitoring vocal parameters, specifically maximum fundamental frequency, may offer an early sign of worsening dysphagia.
• Early identification of swallowing dysfunction through vocal monitoring can facilitate timely rehabilitation.
• Improving quality of life and reducing aspiration risks are key benefits of this approach.