Exam 2 Flashcards
What are the classes of drugs used to treat the common cold?
antihistamines, nasal decongestants, antitussives, and expectorants
Why does the FDA not recommend the usage of over the counter cough and cold products for children younger than 2?
there’s a chance of over sedation, seizures, tachycardia, and death
What is Echinacea? Side effects? Interactions?
an herbal remedy that can reduce upper respiratory infection and cold symptoms and shorten the length of infection by stimulating the immune system; dermatitis, nausea, vomiting, dizziness, headache; potential interaction with aminodraone (used to treat arrthymia), cyclosporine (immunesuppressant), phenytonin (seizures), and methotrexate (antineoplastic)
What is Goldenseal? Usages? Side effects? Interactions?
an herbal remedy that have antibacterial, antifungal, and antiviral function that will promote acid excretion in the GI system and vasoconstriction; used for upper respiratory infections, allergies, and nasal congestions; GI; potential interactions with antacids, H2 blockers, antihypertensives
What are the histamine receptors and their jobs?
H1: involved in smooth muscle contraction and vasodilation of capillaries
H2: increases HR and gastric acid secretion
What is histamine involved in?
nerve transmission, vasodilation, smooth muscle contraction, if too much leads to anaphylaxis
What is the function of antihistamines? Usages? Best time to give?
compete for histamine receptor sites; used for hay fever allergies, anaphylaxis, itching; early in reaction so that histamine does not have time to bind to receptors
What is the function of anticholinergics? Usages? Examples? Side effects?
long-acting muscarinic agonists that will bind to acetylcholine receptors to prevent acetylcholine from binding; for colds: leading to a drying and sedative effect for nasal allergies, hay fever, allergic reactions, motion sickness, Parkinson’s disease, sleep disorders
for bronchodilation: mostly used for COPD ex/ ipratropium (BID), tiotropium (QD, most common), combivent (ipratropium/albuterol), side effects include:dry mouth or throat, nasal congestion, heart palpitations, GI distress
What is the MOA for traditional antihistamines? Examples and their details? Side effects?
non-specific drug that blocks all of H1 receptors; diphenhydramine (Benadryl) can cross the blood brain barrier, promethazine (Phenergan) for nausea and vomiting, meclizine (Dramamine) for motion sickness, hydroxyzine (Atarax) for itching; drowsiness, additive effects with other meds, dry mouth, problems urinating
Contraindications for antihistamines?
known drug allergies, cardiac and kidney disease, COPD
What are some examples of non-sedating antihistamines?
fexofenadine (Allegra), loratadine (Claritin), cetirizine (Zyrtec)
What are the nursing considerations of non-sedating antihistamine?
longer duration of action, careful assessment to determine if it is viral, bacterial, or allergies and why they are presenting with symptoms, stop taking them four days before allergy test
What are the usages of decongestants? Difference between oral vs topical routes?
acute or chronic rhinitis, common cold, sinusitis, hay fever, other allergies; oral is more systemic effect but topical (ie. nasal spray) more localized effect
What are the groups of decongestants? Nursing implications? Contradictions?
Adrenergic, anticholinergic and cortiosteroids; avoid oversue of caffeine, report fever and cough lasting over a week, monitor for intended therapeutic effect; drug allergy, narrow-angle glaucoma, uncontrolled cardiovascular disease, hypertension, long-standing asthma
What are adrenergics? Examples and details?
largest group of decongestants; oxymetazoline (Afrin) topical nasal spray with few side effects but can only be used 3 days at a time due to rebound congestion, pseudoephedrine (Sudafed) PO alpha adrenergic agonist that is slower to work with more systemic side effects of increased BP, jitters/insomnia due to stimulation of CNS
What are corticosteroids (not for respiratory)? Route? Examples? Side effects?
localized anti-inflammatory decongestant; topical intranasal steroid; fluticasone (Flovent), triamcinolone (Nasacort), budesonite (Rhinocort); can cause localized drying and irritation
What are antitussives? Uses? Nursing considerations?
medications used to stop or reduce coughing; used only for non-productive/dry coughs; drug allergy, opioid dependency, respiratory depression
What are opioid antitussives MOA? Usages? Example? Side effects? Contraindications?
work directly on cough reflex in medulla and suppress it, can dry respiratory mucosa and give pain relief; used as an additive in OTC cough syrups; codeine, hydrocodone; sedation, GI, constipation, lightheaded; other opioids or other CNS depressants
What are example non-opioid antitussives MOA? Side effects?
benzonatate (Tessalon Perles) suppresses cough reflex by numbing stretch receptors in respiratory tract to prevent stimulation of cough reflex in medulla; dizzy, headache, sedation, nausea
dextromethorphan (Robatussin) drys out mucosa of respiratory tract, decreases runny nose and nasal drip; dizziness, drowsiness, nausea
What are expectorants? Example? Nursing considerations? Side effects?
disintegrate and thin secretions to help relieve productive cough, guaifensin (Mucinex); increase fluid intake; GI
What is epinephrine MOA?
nonselective adrenergic that will stimulate receptors and reverse symptoms of anaphylaxis by relaxing smooth muscles to improve breathing, can increase HR to improve blood flow
What are the treatments for blood pressure categories?
elevated, stage 1, or stage 2 hypertension advise change in lifestyle first by increasing exercise and changing the diet, stage 1 should try lifestyle changes but if they have risk factors including age, diabetes, renal disorders they may get one diuretic, stage 2 with lifestyle changes they will receive two hypertensive drugs from different classes
What are adrenergic drug types?
Alpha 2 receptor agonists and Alpha 1 receptor blockers
What is the MOA for alpha 2 receptor agonists? Example? Side effects? Nursing considerations?
works on alpha 2 receptors in the brain to decrease norepinephrine production and alpha 2 receptors in the kidneys to reduce renin activity to cause vasodilation; clonidine (Catapres), methyldopa in pregnancy; due to significant side effects not typically first line drugs, orthostatic hypotension, fatigue, and dizziness; change positions slowly, need to taper off due to rebound hypertension, check BP, first dose syncope
What is the MOA for alpha 1 receptor blockers? Example? Side effects? Nursing considerations?
blocks alpha 1 receptors in the vessels to prevent the release of norepinephrine to cause vasodilation; “azosin” doxazosin, prazosin, terazosin; not as profound as alpha 2 receptor agonists, dizziness, orthostatic hypotension, bradycardia; change positions slowly, need to taper off due to rebound hypertension, check BP, first dose syncope
What is the MOA beta blockers? Examples? Side effects? Nursing considerations?
nonselective works on beta 1 peripherally in the heart to reduce HR and on beta 2 receptors to reduce renin secretion of kidneys and aid in vasodilation while selective works only beta 2 receptors; “olol” propranolol is a nonselective that can also be used for panic attacks and migraine preventions that should not be used with albuterol due to bronchospasm risk and metroprolol (used for heart failure to reduce HR and contractility) and atenolol are selective and will be commonly used for exercise induced angina to decrease myocardial demand of oxygen by attenuating to increased HR and BP during exercise; bradycardia, dizziness; check BP and pulse need to be tapered off due to risk of angina, MI, and death if stopped suddenly
What are dual-action alpha 1 and beta receptor blockers? Examples? Side effects? Nursing considerations?
works in the peripheral blood vessels to cause vasodilation and target beta receptors in the heart to lower HR; labterlol and carvediol; erectile dysfunction; check BP and HR
What are angiotension-conversting enzyme inhibitors? Examples? Side effects? Nursing considerations?
often first line drugs for heart failure and hypertension, inhibits ACE to prevent conversion of angiotensin I to angiotensin II to promote vasodilation and prevent aldosterone secretion that will then stimulate diuresis to decrease blood volume; “pril” captopril, enalapril, fosinopril, lisinopril (diuresis promoting to decrease CO and decrease preload); presistent dry cough, hyperkalema, fatigue, dizziness, angioedema, lithium toxicity; want to avoid potassium sparing diuretics and supplements