Code for treatment of retinopathy in a preterm infant

Patients can control a flutter valve's pressure by changing what?

a. Their inspiratory flow b. The angle of the device c. Their expiratory flow d. The expired volume

For which of the following uses might you consider the use of a purely pneumatically powered ventilator?

1. As a backup to electrically powered ventilators 2. When electrical device cannot be used (e.g., magnetic resonance imaging) 3. During certain types of patient transport a. 1 and 2 only b. 1 and 3 only c. 2 and 3 only d. 1, 2, and 3