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Updated: Mar 16, 2026

Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation
Published on: December 5, 2025
Elective use of the Ventrain for upper airway obstruction during high-frequency jet ventilation
Robert A Fearnley1, Sheela Badiger1, Richard J Oakley2
1Department of Anaesthesia, Guy's and St Thomas' NHS Foundation Trust, Guy's Hospital, Great Maze Pond, London, UK, SE19RT.
Abstract:
The safety of high pressure source ventilation (jet ventilation) is dependent upon upper airway patency to facilitate adequate passive expiration and prevent increasing intrathoracic pressure and its associated deleterious sequelae. Distortions in airway anatomy may make passive expiration inadequate or impossible in some patients. We report the elective use of the Ventrain device to provide ventilation in a clinical setting of upper airway obstruction in a patient with post radiation fibrosis that had previously prevented passive expiration during attempted high pressure source ventilation.
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