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.

Question

Quizplus · Accepted Answer

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 pressure metered dose inhalers.

Which of the Following Are True About the Use of a Metered