Clinical review of non invasive ventilation European Respiratory Society A ventilator mode is a method of mechanical ventilation that determines how the ventilator supports a patient's breathing. It specifies the conditions under which the ventilator delivers breaths, including whether the machine Table 1 from Initiation of Noninvasive Ventilation for Sleep Related Hypoventilation Disorders: Advanced Modes and Devices Semantic Scholar Ventilator Associated Pneumonia After Cardiac Arrest and Prevention Strategies: A Narrative Review