Vocal Folds' Oscillatory Characteristics After Photoangiolytic Laser Treatment Using the Blue Light Laser-A Pilot...

Area of Science:

• Otolaryngology
• Phonosurgery
• Laser Surgery

Background:

• Blue light laser phonosurgery is increasingly used for vocal fold pathologies.
• Understanding post-operative vocal fold oscillation patterns is crucial.

Purpose of the Study:

• To investigate changes in vocal fold oscillation patterns and recovery time after blue light laser phonosurgery.
• To assess the impact on vocal fold vibration quality and glottal function.

Main Methods:

• Prospective observational study involving 8 patients with unilateral vocal fold pathology.
• High-speed videolaryngoscopy, electroglottography, and audio recordings were used for assessment.
• Vocal fold function was evaluated preoperatively, and at 2 hours, 24 hours, and 3 weeks post-surgery.

Main Results:

• Immediate post-surgery showed impaired vocal fold oscillations, reduced amplitude symmetry, and increased jitter.
• Cepstral peak prominence decreased, indicating initial effects on vibration quality.
• Most parameters normalized within 24 hours, but the Open Quotient remained lower at 3 weeks.

Conclusions:

• Vocal fold oscillation generally recovers rapidly within 24 hours after blue light laser treatment.
• A persistent decrease in Open Quotient suggests a lasting alteration in glottal function.
• Findings inform patient recovery expectations and voice rest recommendations.