Oxygen-powered resuscitators are classified as which of the following? 1. Volume-limited 2. Pressure-limited 3. Patient-triggered 4. Operator-triggered

a. 1 and 3 c. 2 and 4
b. 2 and 3 d. 1 and 4

ANS: B
Oxygen-powered resuscitators are pressure-limited devices that work similarly to reducing valves. A typical oxygen-powered resuscitator consists of a demand valve that can be manually operated or patient triggered.