Pharm anti-asthmatic drugs Flashcards
(36 cards)
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
take note of interaction between SABA’s and
beta blockers for HT (propanolol)
Bronchodilators type 2: inhaled anticholinergic drugs brand types
ipratropium bromide (atrovent)
ipratropium bromide action
parasympathetic NS stimulates bronchoconstriction, ipratropium bromide blocks this action as it is a bronchodilator and holds the airways open. It is a controller or second line medication
glucocorticoids
hormones that are released from the adrenal glands (outer adrenal cortex), are steroid hormones and control glucose levels in the body. An example is cortisol
cortisol
used to treat chronic stress, raises blood glucose in response to the body’s normal processes (regulating stress). Has anti-inflammatory and anti-allergy effects.
anti-inflammatory inhaled glucocorticoids
agonists at glucocorticoid receptors– developed drugs to minimize glucose effects and maximize anti-inflammatory effects
anti-inflammatory inhaled glucocorticoids work directly in…
respiratory tract
anti-inflammatory inhaled glucocorticoids effects
suppress inflammation, block synthesis of inflammatory mediators
example of an anti-inflammatory inhaled glucocorticoid
Beclomethazone (Beclovent)