All intermittent positive-pressure breathing machines are required to have an operating gas pres-sure source of _____ lb force per square inch gauge (psig)
a. 25 to 35 c. 45 to 55
b. 35 to 45 d. 55 to 65
ANS: C
Regardless of the manufacturer, all intermittent positive-pressure breathing machines require a 45-psig to 55-psig gas pressure source, such as a compressed gas cylinder, a bulk air or oxygen system, or an air compressor.
Health Professions
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