ANS Flashcards
ANS: cholingergic
constrict pupils, increased saliva, bronchconstriction, increased GI mucous, bladder fundus contraction
ANS: adrenergic
dry mouth, dilate pupils, increased contractility, increased HR, bronchodilation, bladder fundus relaxes and sphincter contracts
ANS: beta adrenergic physiologic activities
cardiac acceleration and increased contractility, vasodilation of arterioles supplying skeletal muscle, bronchial relaxation, uterine relaxation
cholinergic drugs
parasympathomimetic
ANS: alpha adrenergic physiologic activities
vasoconstriction of arterioles -> increase BP, pupil dilation, relax gut
cholinergic blocking drugs
parasympatholytic, anticholinergic, or antimuscarinic
adrenergic blocking agents
sympatholytic
adrenergic drugs
sympathomimetic
beta 2 agonists
bronchodilation main use of these drugs (albuterol)
alpha 1 receptors use
nasal congestion, hypotension, dilation of pupils for eye exam
indirect acting cholinergics available
cholinesterase inhibitors. prototype: neostigmine bromide/Prostigmin
alpha 2 receptors use
hypertension
main use of cholinergic drugs
decrease IOP in glaucoma, treat atony of GI tract and bladder, tx and treat myasthenia gravis, anticholinergic toxicity trated with physostigmine
beta 1 receptors use
cardiac arrest, HF, shock
beta 2 receptors use
asthma, premature labor contractions
alpha 2 agonists
slow HR and cause vasodilation by working centrally in brain. clonidine lowers BP and HR, used for treating withdrawal symptoms, ADHD
adrenergic antagonists: alpha blockers
block alpha receptors -> vasodilation. treat: HTN, BPH, Raynaud’s disease, migraines
beta blockers: propranolol vs atenolol
?
alpha blockers available
prazosin/Minipress (HTN), tamulosin/Flomax (BPH)
adrenergic antagonists: beta blockers
antagonize/block effects of catecholamines. can be “selective” to beta 1 receptors or “nonselective” to beta 1. mainly used for HTN and post MI. Also, HF, angina, antidysrhytmic post MI, migraine prophylaxis, arrythmias
direct acting cholinergics available
bethanechol/Urecholine, pilocarpine/Pilocar
uses for anticholinergic drugs
block vagal impulses to heart. supress or decrease respiratory secretions preop med, bladder spasms. relax sphyncter muscle of iris. treat tremors/rigidity Parkinsonism. treat side effects of psychotropic meds.
bethanechol/Urecholine
increases tone of detrusor muscle and causes bladder contractions. Increases gastric tone. Used for: neurogenic bladder atony. NOT used for reflux
anticholinergic drugs available
atropine is prototype. belladonna tincture. trihexyphenidyl/Artane, oxybutinin Cl/Ditropan, scopolamine/Hycosine, benztropine/Cogentin