Pharm: Lower Resp Flashcards
airway obstruction with increased airway resistance of airflow to lung tissues
Chronic Obstructive Pulmonary Disease (COPD)
four causes of COPD
chronic bronchitis
bronchiectasis
emphysema
asthma
the three common signs and symptoms that meds will relieve in COPD
dyspnea
bronchoconstriction
mucus secretions
inflammatory disorder of the airway walls associated with airway obstruction
asthma
tiggers for asthma
stress
allergens
pollutants
s&s of asthma
bronchospasm, dyspnea, mucus secretions
wheezing, coughing, tightness in chest
chemical mediators that are released by mast cells
histamine and prostaglandins
bronchial inflammation and excessive mucus secretions lead to airway obstruction
chronic bronchitis
bronchodilators that mimic SNS and act on alpha or beta receptors
sympathomimetics
increases cAMP in lung tissue causing bronchodilation and restores circulation and increases airway patency (a sympathomimetic)
epinephrine
side effects of sympathomimetics
tremors, HTN, palpitations, tachycardia
monitor ___ before, during, and after treatment with sympathomimetics
heart rate
a selective beta-adrenergic that causes bronchodilation
albuterol
is albuterol used for rapid or maintenance use
rapid (rescue inhaler)
rapid onset, short duration
common side effects of albuterol (selective beta-adrenergics)
excitability, tremors, and tachycardia (will lessen with time/continued use)
a selective beta-adrenergic that is inhaled for long-term asthma treatment
metaproterenol (prevent bronchoconstriction)
open the airway by decreasing the parasympathetic response (causing bronchodilation)
anticholinergics
2 examples of anticholinergics
tiotropium and ipratropium
are the anticholinergic bronchodilators used for maintenance or rapid
maintenance (prevent bronchospams)
how are the anticholinergics usually administered
dry-powder capsule inhaler
common side effects of anticholinergics
dries everything up (constipation and dry mouth)
related to caffeine, stimulates SNS and increases respirations and heart rate
relaxes smooth muscle of bronchi and bronchioles increasing cAMP promoting bronchodilation
methylxanthines
do methylxanthines have a wide or narrow therapeutic range
narrow (5-15 mcg/mL)
toxicity greater than 20
why monitor vital signs administering bronchodilators
because of the stimulation of the SNS
given in response to an allergen
reduce inflammatory process and decrease bronchoconstriction
leukotriene receptor antagonists
example of a leukotriene receptor antagonist
montelukast (singulair)
is montelukast used for maintenance or rapid
maintenance (use as prescribed and not recommended for acute attacks)
used for antiinflammatory effects and should not be used chronically
glucocorticoids (steroids)
how are glucocorticoids usually administered for asthma or COPD and why is this a good thing
inhaler = no systemic effects
maintenance
inhibits histamine release (inflammation) preventing asthmatic attacks from trigger
cromolyn
maintenance
cromolyn are usually used in children or adults
children
used in mild to moderate acute exacerbations of chronic bronchitis from infectious causes
antimicrobials
example of an antimicrobial
trimethoprim-sulfamethoxazole (bactrim)