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The importance of flow and pressure release in emergency jet ventilation devices

Background:  Several self‐assembled devices, consisting of a three‐way stopcock connected to a high pressure oxygen source, have been proposed for transtracheal jet ventilation in an emergency situation. As a three‐way stopcock acts as a ‘flow splitter’ it will, when connected to a continuous oxygen flow, never ensure total flow and pressure release through its side port. The aim of the present study was to measure the efficacy of flow and pressure release of three previously described self‐assembled jet devices and one commercially available tool.