A pressure-volume ventilator graphic fails to return to the point of origin. Which of the following could be the cause?
A. inadequate PEEP
B. leak in the ventilator circuit
C. pulmonary distension
D. excessive cuff pressure
Answer: B. A pressure volume loop on a ventilator should end in the same place it starts. If a pressure volume loop fails to return to zero, or its point of origin, there is likely a leak in the circuit, reducing return volume.
Health Professions
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