Administering Inhaled Drugs Flashcards
1
Q
How much of an inhaled drug reaches the lower airway?
A
Only 10-15%
2
Q
How can we improve deposition in the lower airway?
A
Slow, deep breaths with a breath hold.
3
Q
Describe where particles will impact based on size.
A
(all in microns) 10-15 in nose and mouth, 5-10 in large airways, 3-5 in small airways, and 1-3 in lung parenchym
4
Q
How does humidity affect impaction?
A
High humidity causes particles to grow and impact higher up in the airway.
5
Q
What are the steps of using an MDI?
A
- discharge priming dose
- shake
- fully exhale
- hold MDI 1 inch from mouth or in mouth
- activate while breathing in slowly
- hold breath for 10s
- shake and wait minimum 20-30s before next dose
6
Q
What is the respimat softmist inhaler?
A
A combination of salbutamol and ipratropium bromide in a soft mist inhaler.
