CH 40: Asthma and pulmonary Flashcards
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