To apply positive airway pressure to a manual resuscitator bag during patient transport, which of the following are most appropriate?
1. Spring-loaded valve
2. Underwater seal
3. Magnetic valve
4. Weighted ball
a. 1 and 2 c. 2 and 4
b. 1 and 3 d. 3 and 4
ANS: B
The spring-loaded valve and the magnetic valve are the only valves that are able to be used dur-ing patient transport. The water column would be subject to leaks and possible breakage of the cylinder. The weighted ball must always be held upright and is impractical for transport.
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