Meulemans et al. Evone® Flow-Controlled Ventilation During Upper Airway Surgery: A Clinical Feasibility Study and Safety Assessment. Front. Surg. 2020; 7:6.

This is the first retrospective study critically assessing the perioperative use of Evone and Tritube during upper airway surgery from a surgeon’s perspective. Prof. Vander Poorten and colleagues describe 15 consecutive difficult airway cases where FCV ventilation has been replacing traditional high frequency jet ventilation (HFJV) or ventilation through a conventional endotracheal tube. Procedures included treatment of tracheal or (sub)glottic stenosis and microsurgery of laryngeal (pre)malignancies. Apart from supporting safety and feasibility of Evone and Tritube, the authors observed clear clinical benefits including a ‘superior visualization and exposure of the surgical site’ and a minimally traumatic airway access, while avoiding drawbacks frequently occurring during HFJV such as air-trapping, hypercapnia, desaturation and emphysema. Furthermore, they emphasize that application of FCV through Tritube likely reduces the duration of surgery by allowing stable ventilation with low oxygen concentrations and by offering the surgeon a calm working space. As a result, Evone ventilation is nowadays their new standard of care in most cases of endoscopic airway surgery.

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