A computational study on the characteristics of airflow in bilateral abductor vocal fold immobility

Abstract

Patients have considerable differences in their flow patterns and force distributions during respiration. Patient-specific models may help in evaluation and treatment planning.

Comparison of Ventilation and Voice Outcomes between Unilateral Laryngeal Pacing and Unilateral Cordotomy for the Treatment of Bilateral Vocal Fold Paralysis

“…Comparison of post-operative PIF between the two groups revealed significantly higher PIF values in the unilateral pacing group compared to cordotomy patients. While we recognize many factors affect airflow dynamics in a surgical airway [35], our presented results are reasonable given that in the pacing procedure, full cord abduction is restored to one half of the patient’s glottis. This varies from the cordotomy procedure in which airflow is minimally increased by creating a graduated opening in a vocal fold.…”

Computational fluid dynamics in the assessment of patients' postoperative status after glottis-widening surgery

“…The pressure drop is an important parameter, covered extensively in a number of papers that discuss airflow in the upper respiratory tract. [11][12][13][24][25][26] The calculations by means of the Fluid software yielded the values shifts toward larger values. Based on CFD analyses, it was possible to correlate ΔP with the area of the glottic opening.…”

Investigating the effects of laryngotracheal stenosis on upper airway aerodynamics

“…The complexity of LTS airway obstruction, coupled with the variable nature of LTS, can be better understood using contemporary computational tools to aid clinicians in the diagnosis and treatment of this condition. Computational fluid dynamics (CFD) modeling have shown significant promise in analyzing airflow profile and particle transport in the sinonasal cavity, as well as characterizing laryngeal flow circulation . However, CFD techniques have not been fully utilized in evaluating LTS‐induced airway obstruction.…”