Simulated laryngoscopy with supraglottic high-pressure source ventilation: an in vitro study of tracheal airflow to determine optimal positioning of laryngoscope and jet ventilation cannula.

Purpose: To investigate how variations in positioning of laryngoscope and location of jet cannula on the laryngoscope body influence tracheal airflow during simulated high-pressure source supraglottic (HPSV) jet ventilation laryngoscopy using an anatomical model.

Methods: A Broncho Boy Bronchoscopy model was modified to allow recording of tracheal airflow. A laryngoscope was suspended and positioned to simulate laryngoscopy.