Use of the Dräger E-4 nebulizer in the "Neo" setting will do which of the following?

a. Increase the base flow from 6 L/min to 11 L/min
b. Cause a 6% decrease in the oxygen con-centration in any mode
c. Divert 6 L/min away from the patient cir-cuit to the nebulizer
d. Decrease oxygen concentration signifi-cantly with rates greater than 12 breaths/min

ANS: D
Use of the Dräger E-4 nebulizer in the "Neo" setting increases the base flow from 6 L/min to 9 L/min. Delivered oxygen concentrations decrease slightly from the level set. The amount of de-crease is less than 4% at breath rates greater than 12 per minute. When operating at mandatory breath rates of less than 12 per minute, the nebulizer should not be used because of the potential-ly significant drop in oxygen concentration.