The therapist seeks to increase the mean airway pressure of a patient who is receiving VC-CMV. Which of the following ventilatory maneuvers or adjustments does the therapist need to perform to accomplish this goal?
A. Implement an inspiratory pause.
B. Perform an expiratory pause.
C. Reduce auto-PEEP.
D. Institute pressure support ventilation.
??ANS: A
A. Correct response: Performing an inspiratory pause maneuver increases the mean airway pressure, and lengthens gas exchange time. If the resultant expiratory time is inadequate for the lung to return to its normal end-expiratory volume, auto-PEEP develops.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.
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