Vivo Ventilation Modes
Control Mode – The control mode of ventilation delivers only controlled breaths to the patient. The ventilator is triggered by the pre-set machine rate, and inspiration is ended according to the pre-set cycle variables.
Assist/Control Mode – In this mode, the patient is able to initiate a machine assisted breath. The respiratory rate is established by the set machine rate plus any spontaneous breathing from the patient.
Pressure Support – This mode augments a patient’s spontaneous effort with a pre-set amount of positive pressure. Once the sensitivity setting has been triggered, the ventilator increases the flow to reach the pre-set pressure. The expiratory phase begins when the flow rate drops to a pre-set value.
CPAP (Continuous Positive Airway Pressure) – Provides no breathing support but simply elevates airway pressure and maintains this level. In the home environment, this is used primarily in the treatment of obstructive sleep apnea (see the iSleep range of products).
PEEP (Positive End Expiratory Pressure) – This parameter is similar to CPAP, but elevates airway pressure at the end of mechanical ventilator breaths. Primarily used to increase the volume of air remaining in the lungs at the end of expiration (the functional residual capacity).