[Aerodynamic model of ventilation efficacy in patients after laser arytenoidectomy]

The treatment of bilateral vocal cord paralysis presents a challenge to otolaryngologists. All surgical procedures are designed to widen the lumen of the glottis without impairing vocal function and laryngeal closure during swallowing and respiration. The aim of the study was to evaluate the effectiveness of the laser arytenoidectomy by our own method. Based on the analysis of the results of 36 patients operated on due to bilateral vocal cord paralysis the aerodynamic model of ventilation efficacy changes was introduced and then verified. On the basis of the study an increase of the cross-sectional area of the glottis after laser arytenoidectomy can be combined with air flow improvement in upper airways. Thanks to this relation the postoperative ventilation efficiency may be predicted on the basis of its preoperative value and geometrical parameters of the glottis.