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

xlomafota13 shared this article with you from Inoreader 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 Via http://link.springer.com/journal/405,European archives of oto-rhino-laryngology,The European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino Eur Arch Otorhinolaryngol. 2021 Jul 15. doi: 10.1007/s00405-021-06981-5. Online ahead of print. ABSTRACT 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. HPSV was delivered by a jet cannula attached to the body of the laryngoscope. Different combinations of laryngoscope angulation and cannula attachment were used and air flow recorded for each combination. Statistical analysis assessed the variations in flow. RESULTS: Significant statistical differences in flow effect (P < 0.05) were shown, indicating that laryngoscope position and attachment of je t cannula have a significant effect on tracheal airflow. Highest flows were achieved by anterior positioning of laryngoscope combined with anterolateral attachment of cannula (> 1 L/s) compared to downward or either side (< 0.6 L/s). CONCLUSION: Significant differences in tracheal airflow arise from different positions of both laryngoscope and jet cannula with supraglottic HPSV. Optimal locations for both are apparent and collaborative interaction with anaesthetist emphasised. The experimental setup could be a potential simulation tool. PMID:34264375 | DOI:10.1007/s00405-021-06981-5 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.