Ch 37- Respiratory Drugs Flashcards
What is the main function of the respiratory system?
Deliver oxygen to an d remove carbon dioxide from the cells ( exchange of carbon dioxide and oxygen)
What does the lower respiratory tract consist of?
Trachea, bronchial tree, and lungs
What kind of medications can be used to treat respiratory disorders?
Antihistamines, decongestants, expectorants, antitussives, bronchodilators, anti inflammatory agents
What are some diseases related to the lower respiratory tract?
Asthma, chronic bronchitis, emphysema
Bronchodilators do what to the respiratory system?
Relax bronchial smooth muscles causing the dilation
What classification of drugs act as bronchodilators?
Beta adrenergic, anticholinergic, xanthine derivatives
What do short acting beta 2 drugs do? ( albuterol)
Rescue inhaler.. For acute Asthma attacks
What do long acting beta 2 drugs do? ( salmeterol)
Maintenance inhaler for long term use
What should a nurse remember about someone using a beta adrenergic bronchodilator?
Don’t use with MAOI’s as it may cause hypertension crisis
What do anticholinergics do find r the respiratory system?
Block acetylcholine receptors preventing bronchoconstriction
What are some common adverse effects of using an anticholinergic as a bronchodilator?
Dry mouth, dry throat pharyngitis
What is the action of xanthine derivatives in the respiratory system?
They interfere with the enzyme that breaks down cAMP increasing the amount of cAMP resulting in bronchodilation
What happens if too too much cAMP is available?
Beta 1 can be stimulated increasing heart rate, bp, and contraction ( caffeine like effects )
What are some interactions of xanthine derivatives?
Take with food but avoid ; high protein, low carb, and charcoal broiled food
Leukotreine receptor antagonist is what kind of drug?
Non bronchodilating respiratory drug
What does leukotreine receptor antagonists do for the respiratory system?
Reverse the normal leukotreine response causing bronchodilating, decrease inflammation, decrease mucus production
What do leukotreines do in the body?
They cause inflammation response, bronchoconstriction, mucus production
What is an important nursing action when giving someone a (LTRA)?
Monitor liver enzymes and monitor for allergies to lactose
What are some types of non bronchodilating respiratory drugs?
Leukotreine receptor antagonist, corticosteroids
What kind of drug is a corticosteroid?
Non bronchodilating respiratory drug
What do corticosteroids do in the respiratory system?
Reduce inflammation in respiratory tract inhibiting bronchoconstriction
What should a nurse do when instructing a patient how to use and inhaler corticosteroid?
Always clean inhaler after every use and rinse mouth out after every use to prevent oral infections
Corticosteroids are often used with what other classification of drug?
Bronchodilators to open up airway before use of the corticosteroid
What happens if someone abruptly stops taking/ using their corticosteroid inhaler?
Addisons crisis ( adrenal suppression, renal shut down)