Asthma RAT Flashcards
The most common viral cause of asthma exacerbation in children and adults is?
The rhinovirus
What common components of air pollution contribute to asthma exacerbations?
Sulfur Dioxide and Ozone
Bronchoconstriction from ____ ____ seem to be mediated by excess parasympathetic input.
Bronchoconstriction from physiological factors seem to be mediated by excess parasympathetic input.
Like stress and stuff
Symptoms of ____, a known reflux disorder, are common in asthma patients
GERD which initiates reflex bronchoconstriction
In what three ways do particles deposit in the airways?
a) inertial impaction
b) gravitational sedementation
c) Brownian diffusion
Why are spacers used?
To reduce oropharyngeal deposition and enhance lung delivery
Why are VHCs preferred to spacers?
Valve holding chambers:
- allows evaporation of drug prior to inhalation
- no hand-lung coordination involved
Why are DPIs easier to use?
They are breath actuated
What are the two types of nebulizers?
Jet
- aerosol from liquid or suspension
Ultrasonic
- aerosol from vibrating liquids (cant do micronized suspension)
Optimal inspiratory rate for MDIs, DPIs? What should be patients be told they cant do for DPIs?
MDIs - slow and deep
DPIs - fast (don’t exhale into it)
