Respiratory Meds Flashcards
Beta-2 Adrenergic Agonists prototype
Albuterol
Beta-2 Adrenergic Agonists action
activate beta-2 receptors in the bronchial smooth muscle which results in bronchodilation relieving bronchospasm, inhibiting histamine release, and increasing ciliary motility
Beta-2 Adrenergic Agonists therapeutic uses
- prevention of exercise induced asthma episode
- inhaled short acting form used for prevention of asthma
- treatment of bronchospasm
- long term control of asthma
Beta-2 Adrenergic Agonists complications
TACHYCARDIA, ANGINA due to activation of alpha- 1 receptors in the heart (client should report pain or increase of HR 20-30 bpm, avoid caffeine, consider reduction of dose)
TREMORS due to activation of beta- 2 receptors in skeletal muscles (usually resolves with continued medication use, consider dose reduction)
Beta-2 Adrenergic Agonists contraindications/ precautions
pregnancy risk category C, clients with tachydysrhythmias, or clients with DM, hyperthyroid, heart disease, HTN, and angina
Beta-2 Adrenergic Agonists nursing administration
follow instructions for administration, use beta- 2 before glucocorticoid if prescribed both b/c will allow for bronchodilation and increased absorption, do not exceed prescribed dose, know dosage schedule, log asthma exacerbations and inform provider of change in frequency
Methylxanthines prototype
Theophylline
Methylxanthines action
relaxation of bronchial smooth muscle, resulting in bronchodilation (used less frequently because newer meds are safer)
administered oral or IV (emergency use)
Methylxanthines therapeutic uses
long-term control of chronic asthma or COPD
Methylxanthines complications
MILD TOXICITY REACTION CAN INCLUDE GI DISTRESS AND RESTLESSNESS and more severe reactions can occur with higher therapeutic levels and can include DYSRHYTHMIAS and SEIZURES (monitor serum levels, if symptoms occur stop treatment - activated charcoal decreases absorption, lidocaine treats dysrhythmias, and diazepam controls seizures, periodic blood monitoring required, report - nausea, diarrhea, or restlessness)
Methylxanthines contraindications/ precautions
pregnancy risk category C
use cautiously with heart disease, hypertension, liver & kidney dysfunction, diabetes mellitus, in children, and older adults
Methylxanthines nursing administration
do not double dose if dose missed, do not crush or chew sustained- release preparations
Inhaled Anticholinergics prototype
Ipratropium
Inhaled Anticholinergics action
block muscarinic receptors of bronchi resulting in bronchodilation
Inhaled Anticholinergics therapeutic uses
relieve bronchospasm associated with COPD
allergen-induced and exercise induced bronchospasm
Inhaled Anticholinergics complications
DRY MOUTH and HOARSENESS considered local anticholinergic effects (advise client to sip fluid and suck on sugar free hard candy to control dry mouth)
Inhaled Anticholinergics contraindications/ precautions
pregnancy risk category b
allergy to peanuts
used cautiously when narrow-angle glaucoma and benign prostatic hyperplasia
Inhaled Anticholinergics nursing administration
rinse mouth after inhalation to decrease unpleasant taste, adult dose is usually 2 puffs, wait directed length of time between puffs, if two meds are prescribed wait at least 5 minutes between medications
Glucocorticoids prototype
Prednisone (oral form)
Beclomethasone (inhaled form)
Glucocorticoids action
prevent inflammation, suppress airway mucus production, promote responsiveness of beta2 receptors in bronchial tree
reduction in airway mucosa edema
use is not to provide immediate effects, but rather promote decreased frequency and severity of exacerbations and acute attacks
Glucocorticoids therapeutic use
short term IV agents for status asthmaticus, inhaled for long-term prophylaxis of asthma, short-term oral therapy following acute asthma episode, long-term oral therapy for chronic, severe asthma, promote lung maturity and decrease respiratory distress in fetuses at risk for preterm birth
Glucocorticoids complications
BECLOMETHASONE
DIFFICULTY SPEAKING, HOARSENESS, and CANDIDIASIS (rinse mouth or gargle with water after use, monitor for redness, sores, or white patches - treat candidiasis with nystatin oral suspension)
PREDNISONE with greater than 10 day use
SUPPRESSION OF ADRENAL FUNCTION due to decrease in ability of adrenal cortex to produce glucocorticoids secondary to inhaled or oral agents (administer oral med on alternate day dosing schedule, monitor blood glucose levels, taper dose and do not stop abruptly)
BONE LOSS with inhaled or oral agents (perform weight bearing exercises, consume diet with sufficient calcium and vitamin D, use lowest possible does, oral med should be given on alternate day schedule)
HYPERGLYCEMIA and GLYCOSURIA (monitor blood glucose, clients with DM may need increase in insulin dosage)
MYOPATHY as evidenced by muscle weakness (report signs of weakness, med dosage should be decreased)
PEPTIC ULCER DISEASE (avoid NSAIDs, report black tarry stools, check stool for occult blood periodically, administer with food or meals)
INFECTION (report early signs of infection including sore throat, weakness, malaise)
DISTURBANCES OF FLUID AND ELECTROLYTES fluid retention as evidenced by weight gain and edema and hypokalemia as evidenced by muscle weakness (observe for manifestations and report to provider)
Glucocorticoids contraindications/ precations
pregnancy risk category C
contraindicated in clients who have received a live virus vaccine and those who have systemic fungal infections
use cautiously with children, pts with DM, HTN, heart failure, PUD, osteoporosis, and/or kidney dysfunction
Glucocorticoids nursing administrations
use on a fixed schedule not for acute episodes
administer using MDI, DPI, or nebulizer
devices with HFA do not require spacer
inhale beta-2 agonist before glucocorticoid
oral glucocorticoids are used short term, 3-10 days after acute episode
if on long term therapy, may require additional doses in times of stress
Leukotriene Modifiers prototype
Montelukast
Leukotriene Modifiers action
suppress the effects of leukotrienes, thereby reducing inflammation, bronchoconstriction, airway edema, and mucous production
Leukotriene Modifiers therapeutic use
long-term therapy of asthma in adults and children, and to prevent exercise-induced bronchospasm
Leukotriene Modifiers complications
DEPRESSION and SUICIDAL IDEATIONS (monitor for behavior changes)