Mean airway pressure can be increased when ventilating with the Bunnell Life Pulse High-Frequency Jet Ventilator by doing which of the following?
a. Closing off the purge valve
b. Decreasing the rate on the Bunnell
c. Decreasing the positive end-expiratory pressure on the Bunnell
d. Increasing rate and volume of sigh breaths on the conventional ventilator
ANS: D
The function of the purge valve is to provide a moisture-free environment in the monitoring line of the hi-lo jet tube. Decreasing the rate decreases the mean airway pressure because less time is spent at the inspiratory pressure. Decreasing the positive end-expiratory pressure level decreases the mean airway pressure. Increasing the rate and volume of the sigh breaths increases the mean airway pressure.
You might also like to view...
True or false (circle one). We have to work harder when walking up a hill than down because our muscles are working against gravity
Indicate whether the statement is true or false.
The mandibular second premolar differs from any other premolar because it often has:
A. one root B. three cusps C. a prominent buccal ridge D. a shorter mesial cusp