The respiratory therapist sees the following scalars on the screen of a ventilator providing support to a patient in the ICU. What action should the respiratory therapist take?
a. Switch to the volume-controlled intermit-tent mandatory ventilation (VC-IMV) mode.
b. Increase the flow rate to 60 L/min.
c. Decrease the sensitivity to 2 cm H2O.
d. Increase the tidal volume to 550 mL.
ANS: C
The breaths shown are both patient-triggered. Negative deflections on the pressure-time scalar are present for both complete breaths shown. There is also a negative deflection between the two that did not result in a ventilator breath. A closer look at the amount of pressure required to trig-ger a ventilator breath shows that it is set at 10 cm H2O. The negative deflection in the center of the pressure-time scalar demonstrates that the patient could not generate enough negative pres-sure to trigger a breath. Therefore, the sensitivity needs to be reduced to 2 cm H2O.
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