To produce clinically useful aerosol particles through a small-volume nebulizer, the gas flow rate should be set at ___ L/min to ___ L/min.
a. 12; 15 c. 6; 10
b. 10; 12 d. 3; 6
Q. 2 Driving a small-volume nebulizer with heliox, instead of air or oxygen, has what effect on the aerosol produced?
a. Increases upper airway impaction
b. Creates larger particles
c. Decreases the aerosol output
d. Increases the turbulence of the aerosol
Q. 3 Which of the following is the optimal technique for use of a metered dose inhaler?
1. Actuating the inhaler with the mouthpiece 4 cm from the patient's opened mouth
2. Placing the inhaler in the mouth and closing the lips tightly
3. Holding breath for 5 to 10 seconds after inhalation
4. Not waiting between actuations
5. Inhaling the aerosol quickly
a. 1 and 3 c. 2, 3, and 5
b. 1, 3, and 4 d. 2, 4, and 5
Q. 4 Which of the following are true about the use of a metered dose inhaler?
1. Inertial impaction can be reduced if the patient holds the inhaler in the mouth.
2. Smaller particles will be produced in a cold environment.
3. Larger particles will be produced in a cold environment.
4. The optimum temperature for an inhaler canister is 37 C.
5. The inhaler needs to be shaken before actuation.
a. 1, 3, and 4 c. 2 and 5
b. 2 and 4 d. 3, 4, and 5
Q. 5 An ultrasonic nebulizer is being used to deliver a hypotonic solution. The patient suddenly re-ports shortness of breath. The respiratory therapist auscultates, which reveals wheezing over both lung fields.
Which of the following actions should be taken first?
1. Observe the patient.
2. Give the patient oxygen.
3. Add a bronchodilator to the treatment.
4. Immediately stop the treatment.
a. 1, 2, and 3 c. 2 and 4
b. 1 and 3 d. 4
Q. 6 A hypotonic solution with an ultrasonic nebulizer is ordered for a patient who has a history of hyperreactive airways. In such a situation, the respiratory therapist should recommend which of the following?
1. Refuse to give the treatment.
2. Suggest giving a bronchodilator before the hypotonic solution.
3. Suggest that an isotonic solution be used instead.
4. Administer oxygen before the hypotonic solution.
a. 1 c. 3 and 4
b. 2 and 3 d. 4
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