When either an inspiratory or expiratory hold maneuver is performed on a mechanically ventilated patient, which of the following pressures does the recorded pressure indicate?
A. pleural pressure
B. atmospheric pressure
C. transairway pressure
D. alveolar pressure
?ANS: D
A. Incorrect response: See explanation D.
B. Incorrect response: See explanation D.
C. Incorrect response: See explanation D.
D. Correct response: When either an inspiratory pause or an expiratory hold maneuver is performed on a patient receiving mechanical ventilation, the recorded pressure reflects alveolar pressure. The pressure is sometimes called the alveolar distending pressure.
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