Pharm anti-asthmatic drugs Flashcards
asthma
chronic inflammatory disorder of the airways
asthma attack comprises
wheezing, coughing, shortness of breatj
asthma attack symptoms:
bronchoconstriction, airway inflammation, edema, accumulation of mucous, smooth muscle hypertrophy
inhalation therapy definition
drug delivery directly to the lungs
advantages of inhalation therapy
therapeutic effects are enhanced, systemic effects are minimized, minimal enzyme degradation when compared to oral route
devices
MDIs, dry powder inhalers, nebulizers
MDI’s
deliver a short burst of aerosolized medicine, requires proper inhaler technique and use of a spacer
dry powder inhalers
no propellant needed, easier to use, less drug deposition in the oropharynx
drugs that are bronchodilators
beta agonists, anticholinergics
anti-inflammatory agents
glucocorticoids, mast cell stabilizers
Beta agonists actions
sympathetic nervous system= bronchodilation, agonist, beta 2 receptors are specific to the airways
SABA= short acting beta agonist description
quick relief drugs (reliever/rescue inhalers, are blue)
when are SABA’s used?
rapid relief during asthma attack, prevention of exercise induced bronchospasms, take only as needed, part of regimen for bronchodilation
example of a SABA
albuterol (ventolin)
SABA adr’s
they are rare, especially via inhaler; cardiovascular– tachycardia, hypotension; CNS– headache, nervousness, agitation