Respiratory medications Flashcards
Diphenhydramine Class
- oral antihistamine
- 1st gen
- central acting
Diphenhydramine MOA
- block action of histamine in body
- targets H1 and H2 receptors
Diphenhydramine use
- seasonal allergic rhinitis
- cold symptoms
- allergic reactions
- motion sickness
- sleep aid
Diphenhydramine adverse effects
anticholinergic, drowsiness
Diphenhydramine specific implications
- warn about alcohol and CNS depressants
- caution in elderly due to urinary retention
- increase fluids
Fexofenadine, loratadine class
oral antihistamine, peripheral acting, 2nd gen
Fexofenadine, loratadine MOA
block action of histamine, H1 receptors only
Fexofenadine, loratadine use
seasonal allergic rhinitis, cold symptoms
Fexofenadine, loratadine adverse effects
- limited
- non sedating
- toxicity with ketoconazole and erythromycin
Fexofenadine, loratadine specific implications
increase fluid intake
Implications for all oral antihistamines
- first line drug for allergic rhinitis
- take before symptoms start
- cannot push allergen off receptor once it is attached
Benefits of oral antihistamines
- bronchial relaxation
- decrease hypersecretions
- alleviate itching
- prevent vasodilation, edema
Beclomethasone, fluticasone, budesonide Class
glucocorticoid, intranasal drug
Beclomethasone, fluticasone, budesonide MOA
- anti inflammatory response
- stabilizes cell membrane
- prevent release of histamine
- interferes with normal actions of WBC
Beclomethasone, fluticasone, budesonide use
allergic rhinitis
- most effective for prevention/treatment of seasonal + perennial rhinitis
- considered first line therapy
cold symptoms
sinusitis
diagnostic and surgical procedures
Beclomethasone, fluticasone, budesonide adverse effects
- nasal irritation
- decrease nasal passage healing
- sore throat, headache
- rare effects: adrenal suppression of linear growth in kids
Beclomethasone, fluticasone, budesonide implications
may take 3-4 wks for max results
Cromolyn class
Mast cell stabilizer, intranasal drug
Cromolyn MOA
block mass cell degranulation, stabilizing the cell and preventing histamine release
Cromolyn use
allergic disorders
Cromolyn adverse effects
- nasal irritation
- decrease nasal passage healing
- sore throat, headache
Cromolyn implications
may take 3-4 wks for max results
Azelastine class
intranasal antihistamine
Azelastine MOA
block action of histamine in nasal cavity
Azelastine use
seasonal allergic rhinitis, cold symptoms
Azelastine adverse effects
epistaxis, headache, unpleasant taste
Azelastine implications
may take 3-4 wks for max results
Sympathomimetic decongestants: nasal sprays
phenylephrine, oxymetazoline
Sympathomimetic decongestants: oral
pseudoephedrine
Sympathomimetics MOA
activates alpha 1 adrenergic receptors on blood vessels
- vasoconstriction
- reduces blood flow to nasal mucosa
- reduces nasal congestion
- allows nasal secretions to drain
Sympathomimetics use
seasonal allergic rhinitis, cold symptoms, sinusitis, diagnostic and surgical procedures, epistaxis
Sympathomimetics adverse effects
Nasal sprays
- nasal irritation/dryness
- headache, irritable
- rebound congestion
- increase BP, palpitations
Oral
- less potent, delayed effects, longer acting, more systemic effects
- increase BP, palpitations
Sympathomimetics contraindications
CV disease, HTN
Sympathomimetics implications
- rebound congestion: don’t use longer than 2-3 days, one nostril at a time
- abuse risk
Non-opioid anti-tussives
dextromethorphan, benzonatate
Opioid anti-tussives
codeine, hydrocodone
Antitussive MOA
suppresses cough reflex
Anti-tussive use
cough suppressant, relieves pain, promotes sedation
Anti-tussive adverse effects: opioid
n/v, sedation, decrease respiratory drive, addictive potential
Anti-tussive adverse effects: non-opioid
nausea, drowsy, dizzy, mild sedation, abuse risk
Anti-tussive implications
- avoid driving and operating heavy machinery, alcohol, other sedatives
- call HCP if cough lasts > week, severe headache, chest pain, fever
Guaifenesin class
Expectorants
Guaifenesin moa
stimulate mucus production by irritating stomach lining
Guaifenesin use
relief of nonproductive cough - bronchitis, laryngitis, sinusitis
Guaifenesin adverse effects
n/v, gastric irritation
Guaifenesin implications
- does not work if pt. is not drinking water
Beta 2-adrenergic agonists drug types
ISABAs, LABAs, oral agent
Beta-2-adrenergic agonists moa
act on beta 2 receptors in smooth mm of lung - dilation of bronchials
Inhaled short acting meds
Albuterol, levabuterol
Inhaled long acting meds
salmeterol
Oral agents - B2 agonists
terbutaline, albuterol
Beta 2-adrenergic agonists use
- most effective for relief of acute bronchospasm and prevention of exercise-induced asthma
- asthma and COPD
SABA specific use
1-2 puffs, 3-4x a day for PRN use, rescue inhaler
LABA specific use
BID, fixed schedule, not PRN, monotherapy with COPD, always w/inhaled glucocorticoids
Inhaled B2 adrenergic agonist adverse effects
tachycardia, angina, tremor
Oral B2 adrenergic agonist adverse effects
angina, tachydysrhythmias, tremor
B2 adrenergic agonists in asthma implications
- spacer
- 1 min between puffs
- inhaled long acting on fixed schedule
Glucocorticoids inhaled: beclomethasone MOA
suppress inflammation and mucus production
Glucocorticoids inhaled: beclomethasone use
asthma prophylactically, most effective anti-asthma drug available
Glucocorticoids inhaled: beclomethasone adverse effects
- oropharyngeal candidiasis
- dysphonia: hoarseness, difficulty speaking
- osteoporosis
- cataracts, glaucoma
Glucocorticoids inhaled: beclomethasone implications
- prophylactic
- gargle and spit after administration
- spacer
- monitor growth in kids
- routine eye exams
- minimize bone loss by taking smallest dose, calcium supplement, weight-bearing exercise
Glucocorticoids oral: prednisone, prednisolone use
asthma, COPD, disease related to inflammation
Glucocorticoids oral: prednisone, prednisolone adverse effects
- adrenal suppression
- weight gain and fluid retention
- osteoporosis
- hyperglycemia
- peptic ulcer disease
Glucocorticoids oral: prednisone, prednisolone contraindications
live virus vaccine, systemic fungal infection
Glucocorticoids oral: prednisone, prednisolone implications
- taper if taking >10 days
- can cause acute respiratory exacerbation or adrenal crisis
- short term use only
Glucocorticoid/LABA combinations med
fluticasone/salmeterol, budesonide/formoterol
Glucocorticoid/LABA combinations use
asthma, COPD
Glucocorticoid/LABA combination adverse
same as LABA and inhaled glucocorticoids
Glucocorticoid/LABA combinations implications
- same as LABA/inhaled glucocorticoids
- inhale B2 agonist first, wait 5 minutes, then deliver glucocorticoids
Cromolyn: mast cell stabilizer Route
MID, nebulizer
Cromolyn use (specific)
prophylaxis for asthma
Cromolyn adverse effects (asthma)
cough, bronchospasm
Cromolyn implications
- works best taken 15 min prior to exercise/cold
Theophylline (methylxanthines) MOA
- smooth mm relaxation (bronchodilation)
- suppress response of airways to stimuli
Theophylline (methylxanthine) use
long term control of chronic asthma
- best for nocturnal asthma and COPD
Theophylline (methylxanthines) adverse effects
- narrow therapeutic index
- toxicity: n/v/d
- severe dysrhythmias @ levels >30
Theophylline (methylxanthines) implications
- plasma levels 10-20 mcg/mL
- never double up after missed dose
- antidote: activated charcoal
- caffeine increases plasma levels - AVOID
- do not crush
Ipratropium bromide (anticholinergic) moa
block muscarinic receptors - bronchodilation
Ipratropium bromide use
allergic rhinitis, cold symptoms, COPD
Ipratropium bromide adverse effects
dry mouth hoarseness, unpleasant taste
Ipratropium bromide (anticholienrgic) implications
rinse mouth after
Montelukast sodium (leukotriene receptor antagonist) moa
blocks action of leukotriene - decrease inflammation, smooth m relaxation
Montelukast sodium (leukotriene receptor antagonist) use
asthma, exercise induced asthma, allergic rhinitis
Montelukast sodium (leukotriene receptor antagonist) adverse effects
mood changes, headache, fatigue, tremors, n/v/d, stomach pain, rash
Montelukast sodium (leukotriene receptor antagonist) implications
stop drug immediately if mood changes or nightmares occur