In this video, we'll explore the fundamentals of Airway Pressure Release Ventilation (APRV), a ventilation strategy that utilizes higher continuous positive airway pressure (CPAP) levels to recruit alveoli in ARDS. We'll also discuss the settings and adjustment of this mode and potential benefits in clinical practice.

ASV, a form of closed loop ventilation, utilizes a pressure-targeted approach to optimize the balance between tidal volume and respiratory frequency based on Otis-predicted lung mechanics. By adopting a pressure ventilation format, ASV establishes a ventilatory pattern that minimizes the work of breathing, auto PEEP, and peak airway pressure. Although ASV shares similarities in gas delivery format with pressure control ventilation and pressure-regulated volume control, it stands out with its algorithmic control of the ventilatory pattern. ASV automatically determines the ideal tidal volume and respiratory rate to ensure that peak pressure remains below the target level.

Adaptive support ventilation (ASV) utilizes a pressure-targeted approach to closed loop ventilation. This approach optimizes the balance between tidal volume and respiratory frequency based on lung mechanics predicted by Otis. ASV adopts a pressure ventilation format, which establishes a ventilatory pattern that minimizes the work of breathing, auto positive end expiratory pressure (PEEP), and peak airway pressure. The gas delivery format of ASV is similar to pressure control ventilation and pressure-regulated volume control. However, ASV differs from these methods by incorporating algorithmic control of the ventilatory pattern. ASV automatically determines the ideal tidal volume and respiratory rate to maintain peak pressure below the target level.