Auto-PEEP can be detected without the use of an expiratory pause on which of the following curves?
a. Pressure-time c. Pressure-volume
b. Flow-time d. Volume-time
ANS: B
When a patient has auto-PEEP, the expiratory flow does not return to zero. A new inspiration begins before the patient has had time to exhale completely. As a result, air remains trapped in the lungs. A pressure-time curve shows auto-PEEP only when an expiratory pause is used.
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