CH 40: Asthma and pulmonary Flashcards
(38 cards)
muscular, elastic structures whose diameter, or lumen, varies with the contraction or relaxation of smooth muscle.
bronchioles
bronchioles are regulated by:
SNS and PNS
causes bronchiolar smooth muscle to relax, the airway diameter to increase, and bronchodilation to occur
beta2-adrenergic receptors
sympathetic branch activates:
beta2-adrenergic receptors
parasympathetic branch causes:
bronchiolar smooth muscle to contract, the airway
diameter to narrow, and bronchoconstriction to occur
some of the most frequently prescribed drugs for treating pulmonary disorders
bronchodilators
chronic pulmonary disease with inflammatory and bronchospasm components.
asthma
stimulates the secretion of histamine and other inflammatory mediators, which increases mucus and edema in the airways
acute inflammatory response
the most common chronic illness in childhood, accounting for 13.8 million missed school days each year.
asthma
goal of pharmacotherapy for asthma
Stop bronchospasm
Reduce the frequency of asthma attacks
preferred drug for relief of acute symptoms
SABAs for bronchodilation
alternate drugs for those who cannot tolerate SABAs
anticholinergics for bronchodilation
oral drugs are used for short periods to reduce the frequency of acute exacerbations
corticosteroids: systemic for anti-inflammatory
preferred drugs for long-term asthma management
oral doses may be requires for severe, persistent asthma
corticosteroids: inhaled
alternative drugs to control mild, persistent asthma or exercise-induced asthma
mast cell stabilizers
alternative drugs to control mild, persistent asthma or as adjunctive therapy with inhaled corticosteroids
leukotriene modifiers
used in combination with inhaled corticosteroids for prophylaxis of moderate to sever persistent asthma
LABAs
used in combination with inhaled corticosteroids for prophylaxis of mild to moderate persistent asthma
methylxanthines
used of adjunctive therapy for patients who have allergies and severe, persistent asthma
immunomodulators
albuterol (SABAs) therapeutic effects
Bronchodilation
Act on beta2 in the lungs
Also act on beta1 in the heart
Rescue drug for an acute attack
Facilitates drainage of mucus
Inhibits release of other inflammatory chemicals from mast
cells
albuterol (SABAs) adverse effects
Headache,
dizziness,
tremor,
nervousness,
throat irritation,
drug tolerance
Tachycardia,
dysrhythmias,
hypokalemia,
hyperglycemia,
paradoxical bronchoconstriction,
increased risk for asthma-related death (LABAs)
albuterol (SABAs) what to monitor and precautions
assess respiratory status before and after
advise patients not to use LABAs for rescue medication
inhaled ipratropium (anticholinergics) therapeutic effects
Treatment of chronic asthma
Block the PNS and stimulates the SNS that results in
bronchodilation
inhaled ipratropium (anticholinergics) adverse effects
Headache,
cough,
dry mouth,
bad taste,
paradoxical bronchospasm
Pharyngitis,
paradoxical bronchospasm,
worsening of urinary retention