Which of the following uses magnetism versus gas pressure as its basic principle of operation?
a. Bird Mark 14 ventilator
b. Puritan Bennett PR-2 ventilator
c. The Vest Airway Clearance System (also known as the ThAIRapy Vest)
d. Percussionaire Intrapulmonary Percussive Ventilator (IPV-1)
ANS: A
The Bird Mark series ventilators use magnetism versus gas pressure as their basic principle of op-eration.
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