Publications by authors named "Jacob Michaud-Dorko"
Objectives/hypothesis: Assess the impact of the infraglottal medialization technique on acoustics and the vertical stiffness gradient of the vocal fold using excised canine larynges.
Methods: Seven ex vivo canine larynges were tested in three states: 1) no implant, 2) medialized using a glottal implant, and 3) medialized fold using an infraglottal implant. Outcome measures were vocal efficiency and stiffness of the fold.
Article Synopsis
- The study investigates the elastic properties of vocal folds by testing Young's modulus in both excised canine and cadaveric human samples, focusing on their anterior-posterior direction.
- Micro-indentation testing revealed a vertical stiffness gradient, showing greater stiffness in the inferior section of the folds compared to the superior section, and a notable increase in stiffness toward the anterior and posterior ends.
- The findings suggest that while human vocal folds have lower stiffness at low strains, they align closely with canine folds at higher strains, supporting the use of canines as models for understanding human laryngeal elasticity.
Three laryngeal models were used to investigate the aerodynamic and elastic properties of vocal fold vibration: cadaveric human, excised canine, and synthetic silicone vocal folds. The aim was to compare the characteristics of these models to enhance our understanding of phonatory mechanisms. Flow and medial glottal wall geometry were acquired via particle image velocimetry.
View Article and Find Full Text PDFAcquired subglottal stenosis is an unpredicted complication that can occur in some patients who have undergone prolonged endotracheal intubation. It is a narrowing of the airway at the level of the cricoid cartilage that can restrict airflow and cause breathing difficulty. Stenosis is typically treated with endoscopic airway dilation, with some patients experiencing multiple recurrences.
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