Which of the following alternatives may increase the FiO2 capabilities of air-entrainment nebuliz-ers?
1. Add open reservoir to expiratory side of T tube.
2. Connect together two or more nebulizers.
3. Use a commercial dual-flow system.
4. Add open reservoir to inspiratory side of T tube.
a. 1 and 2 only
b. 1, 2, and 3 only
c. 1 and 4 only
d. 1, 2, 3, and 4
ANS: B
The five alternatives for boosting the FiO2 capabilities in these situations are presented in Box 41-2.
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