Author Question: Which of the following is the optimal technique for use of a metered dose inhaler? 1. Actuating ... (Read 56 times)

ghost! · **on:** Jul 16, 2018

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

Question 2

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

shewald78 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: A
If an adult patient positions the outlet of the pressurized metered dose inhaler approximately 4 cm (two finger widths) in front of an opened mouth and has a low inspiratory flow rate, this technique can increase the dose delivered to the lower respiratory tract from a range of approxi-mately 7 to 10 to 14 to 20 and can decrease the impact on the oropharyngeal region.

Answer to Question 2

ANS: D
If an adult patient positions the outlet of the pressure metered dose inhaler approximately 4 cm (two finger widths) in front of an opened mouth with a low inspiratory flow rate, this practice can increase the dose delivered to the lower respiratory tract from a range of approximately 7 to 10 to 14 to 20 and decrease oropharyngeal impaction. A cold ambient temperature (i.e., a temperature of less than 10 C) dramatically decreases the output of chlorofluorocarbon pres-sure metered dose inhalers.