Pulmonary Drugs Flashcards
Albuterol is a
short acting beta 2 agonist
inhalation of this product leads to relaxation of bronchial and tracheal smooth muscles in management of acute bronchospasm in asthma and other Chronic obstructive airway diseases
albuterol
Albuterol indications
management of acute bronchospasm in asthma and other chronic obstructive airway diseases
what part of the anatomic structures of the respiratory system do these drugs target
the bronchial tree - the conducting zone
The conducting zone of the bronchial tree contain
sympathetic innervation
parasympathetic innervation
mucus secreting goblet and ciliated cells that remove inhaled products
MOA albuterol
activates adenylate cyclase – increasing cAMP –
less intracellular Ca2+ – leading to dilation
Relaxation of the bronchial and tracheal smooth muscle leads to
relieves bronchospasm
reduces airway resistance
facilitates mucous drainage
increases vital capacity
SE of albuterol
tachycardia (most common)
hyperglycemia (not a contraindication in DM)
hypokalemia (low potassium)
tremor (common)
paradoxical bronchospasm (rare)
Alternatives to albuterol
metaproterenol (inhaled and tablet)
levalbuterol (deemed inferior to albuterol)
Leukotriene modifiers are
montelukast
zafirlukast
Leukotriene modifiers job is to
reduces edema, decrease mucous production, bronchoconstriction, allergic rxns
Indications for Leukotriene modifiers
asthma
allergic rhinitis
exercise-induced bronchoconstriction
Contraindications for Leukotriene modifiers
phenylketonuria
hepatic disease
daily drug to prevent sx of acute asthma
Leukotriene modifiers (montelukast, zafirlukast)
chronic urticaria can also be used by this acute asthma daily preventative
montelukast
Leukotriene modifiers are thought to be _______ effective than inhaled glucocorticoids for management of persistent asthma
less
5-lipoxygenase inhibits
formation of leukotrienes
Example of a 5-lipoxygenase inhibitor
Zileuton
Common adverse affect of 5-lipoxygenase inhibitor
elevated of liver enzymes and interferes with CYP metabolism
Methylxanthines indications
oral and IV treatment of asthma, bronchospasm and COPD (rarely)
also infant apnea
MOA of Methylxanthines
structurally similar to caffeine
relaxes smooth muscle and anti-inflammatory and immunomodulatory effect
Methylxanthines name
Theophylline
Theophylline MOA
is a competitive nonselective phosphodiesterase inhibitor which raises intracellular cAMP – activates PKA – inhibits TNF-alpha – inhibits leukotriene synthesis – reducing intracellular Ca2+
Aminophylline is _____ and _____ acting than Theophylline
less potent
shorter acting
Theophylline has a _______
narrow therapeutic window
Theophylline can increase risk of _____ if over that therapeutic window
seizures and arrhythmias
other GI upset
many drug-drug interactions
Theophylline monitoring with
PFTs
LFTs
serum theophylline concentrations
Inhaled corticosteroids indications
acute and/or persistent asthma (mild-severe), COPD
MOA inhaled corticosteroids
suppress inflammation and immune responses and reduce edema and secretions by:
controls rate of protein synthesis
depresses the migration of polymorphonuclear leukocytes and fibroblasts
reverse capillary permeability and lysosomal stabilization at the cellular level to prevent or control inflammation
SE of inhaled corticosteriods
cough
thrush, hoarseness, cataracts
growth suppression
reduction in bone density
Inhaled corticosteroids include
budesonide
beclomethasone
fluticasone
mometasone
intranasal forms are not a treatment for
asthma
oral corticosteroids include
methylprednisolone
prednisone
prednisolone
Long-acting beta agonists (LABA) are used in
maintenance of asthma and prevention of asthma attacks, exercise-induced bronchoconstriction prevention and COPD maintenance
LABA’s are not used in
acute asthma attacks or acute COPD attacks
LABA can not be used as monotherapy in
asthma treatment
LABA can be used in monotherapy in
COPD management
difference of LABA and SABA
LABA lasts approximately 12 hours
SABA lasts 4-6 hours
LABA names
salmeterol
formoterol (in combination)
Formoterol is ______ than Salmeterol
more potent and faster acting
Combination inhalers LABA/ICS include
salmeterol/ fluticasone (ADVAIR)
formoterol/budesonide (SYMBICORT)
formoterol/mometasone (DULERA)
Combination inhalers SABA/anticholinergic include
Combivent (albuterol/ipratropium)
Mast cell stabilizers/ Modulators are medications that
are used to prevent or control certain allergic disorders
block mast cell degranulation, stabilizing the cell and thereby preventing the release of histamines and related mediators
Mast cell stabilizers/ Modulators include
Cromolyn