Author Question: Which of the following principles is used by the ultrasonic nebulizer to produce aerosol droplets? ... (Read 83 times)

Anajune7 · **on:** Jul 16, 2018

Which of the following principles is used by the ultrasonic nebulizer to produce aerosol droplets?

a. Evaporative cooling
b. Mechanical baffling
c. Fractional distillation
d. High-frequency vibrations

Question 2

Which of the following indicate a potential need for administration of a water or isotonic saline aerosol?

a. Stridor or brassy, crouplike cough
b. Evidence of increased volume of secretions
c. Hoarseness after extubation
d. Patient discomfort after bronchoscopy
a. 1 and 3 only
b. 1, 3, and 4 only
c. 2 and 4 only
d. 2, 3, and 4 only

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

Answer to Question 1

ANS: D
This crystal transducer converts radio waves into high-frequency mechanical vibrations (sound).

Answer to Question 2

ANS: B
The AARC has published Clinical Practice Guideline: Bland Aerosol Administration. Excerpts are in CPG 38-2.

The presence of one or more of the following may be an use indication for administration of a water or isotonic or hypotonic saline aerosol:
Stridor
Brassy, crouplike cough
Hoarseness after extubation
Diagnosis of laryngotracheobronc hitis or croup
History of upper airway irritation and increased work of breathing (e.g., smoke inhalation)
Patient discomfort associated with airway instrumentation or insult
Bypassed upper airway
Need for sputum induction (e.g., Pneumocystis pneumonia or tuberculosis) is an indication for administration of hypertonic saline aerosol.