The Bunnell Life Pulse High Frequency Jet Ventilator creates high-frequency jet ventilation by using which of the following mechanisms?
a. Rotary piston c. Spinning ball
b. Pinch valve d. Flow interrupter
ANS: B
An electromagnetic solenoid activates the pinch valve, which breaks the flow of pressurized gas into small bursts with the pinch-and-release action of the silicone tube of the patient breathing circuit.
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