Q: In Adaptive Support Ventilation (ASV) operator has to set (select one)

A) Respiratory rate
B) Minute volume
C) Tidal volume
D) Pressure support
E) inspiratory/expiratory time ratio


Answer: B

In Adaptive Support Ventilation (ASV®), operator sets minute volume and ventilator automatically determines an optimal tidal volume / respiratory rate combination. It takes into consideration patient's work of breathing (patient’s respiratory mechanics) - breath to breath -and adjust inspiratory pressure, respiratory rate, and inspiratory/expiratory time ratio. Operator can set limit, if wishes, to maximum tidal volume by setting a maximum inspiratory pressure. In patient's who are now ready to wean, ASV adjusts pressure support - breath to breath -, which determines and help to recover patient's inspiratory strength - and assist in weaning.