Which of the following statements is true concerning the antiasphyxia valve of the Uni-Vent 750?
a. The valve opens with a –1 cm H2O pres-sure.
b. The valve opens in the synchronized in-termittent mandatory ventilation mode for spontaneous breathing.
c. The valve can open in the control mode for spontaneous breathing.
d. The valve functions as the ventilator's demand valve for breath triggering.
ANS: C
If the flow setting is insufficient for the inspiratory demands of the patient, the antiasphyxia valve allows room air to be entrained for additional flow. This allows the patient to breathe spontaneously between the mandatory breaths in the control mode.
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