Which of the following are power sources for the Cardinal Health Infant Flow Nasal CPAP Sys-tem?
1. 12-V direct current battery
2. 20-psig compressed-air source
3. 50-psig oxygen source
4. Alternating current electrical source
a. 1 and 4 c. 2, 3, and 4
b. 1 and 2 d. 1, 2, 3, and 4
ANS: D
The continuous positive airway pressure system uses two high-pressure gas sources (50 psig each), an alternating current electrical source, and a 12-V direct current battery as a back-up elec-trical power source.
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