Abstract
High-frequency ventilation (HFV) is theoretically an ideal ventilatory mode for lung protection.It also delivers extremely small tidal volumes near to or less than the anatomically invalid cavity (about 2ml/kg) at very high respiratory frequencies (recognized ventilation frequency about 4 times more than the normal range). Compared to the conventional mechanical ventilation, HFV makes use of lung-open mode, with low tidal volume, low airway pressure, low thoracic pressure and end-exhaling pressure effect, which can avoid recruitment/derecruitment of alveoli to reduce pressure injuries on lung tissue and airway.Nowadays, more and more critical care practitioners implement this ventilation mode.We reviewed the principles, classification, parameters, and clinical indications of HFV in this article. Key words: High frequency ventilation; Ventilation principle; Technical parameters; Clinical application,
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