Author Question: Which of the following statements is true concerning vibrating mesh nebulizers? a. They require ... (Read 30 times)

swpotter12 · **on:** Jul 16, 2018

Which of the following statements is true concerning vibrating mesh nebulizers?

a. They require at least 3 mL of solution to produce an aerosol.
b. The exit velocity of the aerosol from vi-brating mesh nebulizers is rapid.
c. They add no gas to the aerosol stream.
d. They can produce a particle size range of 1 to 2 m.

Question 2

A respiratory therapist needs to deliver a bronchodilator with a small-volume nebulizer. To ensure that 70 of the medication is available for nebulization, _____ mL of fluid should fill the nebu-lizer.

a. 3 c. 3.5
b. 5 d. 4

frankwu0507 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
Vibrating mesh nebulizers add no gas to the aerosol stream. They can generate aerosol from a single drop of liquid, so they require very little solution to produce an aerosol. The exit velocity of the aerosol is slow (less than 4 m/s), and the particle can range from 2 to 5 m (mass median aerodynamic diameter).

Answer to Question 2

ANS: B
Filling the nebulizer with 5 mL would make 3.5 mL, or 70 of the medication, available for neb-ulization.