In pressure support mode, the cycling mechanism is known as flow cycling. In this mode, the operator sets the percentage of peak inspiratory flow as a cycling criteria. The ventilator terminates the inspiratory phase when the inspiratory flow drops to the predetermined percentage of the peak inspiratory flow. Note: Ventilator settings, patients' inspiratory effort, and respiratory mechanics impact the peak inspiratory flow E.g. 1: End inspiration setting (Expiratory trigger s

In pressure support mode, the ventilator terminates inspiration when the flow decreases to a predetermined percentage of the peak inspiratory flow (end inspiration/ expiratory trigger sensitivity). For instance, if the peak inspiratory flow is 60 litres per minute and the cycling setting is 25%, the ventilator concludes the inspiratory phase when the flow reaches 15 litres per minute. Some ventilators come with a default cycling setting of 25%. Adjusting the cycling setting t

In volume control mode, flow and tidal volume are independent variables, while pressure is a dependent variable. The peak pressure alarm serves as a safety mechanism to prevent excessive airway pressures that could cause barotrauma. When the airway pressure reaches the preset alarm limit, the ventilator terminates the inspiratory phase to avoid further pressure rise- a process known as pressure cycling.