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65 Cards in this Set

  • Front
  • Back
-Not effective when given orally
-stimulates all adenoreceptors
-increases HR and contractibility
-relaxes bronchial smooth muscle in asthma and anaphalactic shock
-controls metabolism
Epinephrine
-Released from sympathetic nerve endings acting on all alpha adenoreceptors and beta 1 adenorecetpors
-injection will increase blood pressure by both vasoconstriction and increased cardiac output
Norepinephrine
- is the precursor to the formation of EPI and NE
- agents that block the receptors cause Parkinsons disease
- renal blood vessels have non-innervated dopamine receptors that produce vasodilation
- at high doses can increase blood pressure and cardiac output
Dopamine
-is orally effective
-limited therapeutic justification
- chronic toxicity can mimic paranoid schitophrenia
Amphetamine
-is orally effective
-limited therapeutic justification
- chronic toxicity can mimic paranoid schitophrenia
Methamphetamines
-is a mild CNS stimulant that is structurally related to amphetamine
-in large doses it will produce generalized CNS excitation and may cause convulsion
-its primary use is in children with attention deficit disorder
- has good bioavalibility
Methylphenidate
-is the oldest drug known to man
-used in Chinese medicine for over 3000 years
-half of its action is due to direct receptor stimulation where it acts on all alpha and beta receptors
-half of its action is also indirect in that it releases NE from neural stones
- can be used as a treatment for bronchial asthma
- is found in some over he counter meds for ear and nasal decongestion
- can be used in opthamology to produc eshrt lasting mydriasis, and cyclopesia
Ephedrine
-Neo-Synephrine
-orally effective when given in large doses (200-300 times IV dose) so its inclusion in over the counter is questionable
-used in opthamology to produce mydrasis
-can be used as a nasal spray cause it causes vasoconstriction along with less leakage of fluid
- unfortunately can cause worse congestion than nefore once it wears off
Phenylephrine
-Main action is the long term stimulation of the CNS alpha 2 receptors
-used to treat high blood pressure
-decreases activity of the neurons in the brain involved with pain (so it is used as a pain reliever)
-is given for drug withdrawl
Clonadine
– is a modification of metaproterenol, but is longer acting
-Has a higher incidence of cardiac side effects
-although not FDA approved, used to prevent premature child birth
-used to treat bronchial asthma
Terbutaline
-treatment of asthma, has same indications as terbutaline, but is longer acting and has fewer side effects
Albuterol
-long acting beta 2 adenoreceptor agonist that is commonly used to treat bronchial asthma
Salmeterol
-is a synthetic catecholamine analog of dopamine that is a highly selective beta 1 adenoreceptor stimulant (but does not stimulate dopamine receptors
-increases cardiac output without vasoconstriction associate with NE that would result in increased cardiac work
-is used for short term treatment for cardiac insufficiency (like in organic heart disease or cardiac surgery)
Dobutamine
-classified as a local anesthetic agent that also is a potent inhibitor of NE reuptake
Cocaine
-potent inhibitor of catecholamine reuptake into adrenergic nerve ternials
-treats pathological depression
Tricyclic antidepressants
-an alpha 1 blocker that will decrease BP
-when BP in decreased the body tries to increase BP by means of the heart, so often this drug is given with beta blockers to decrease HR
-does not produce large reflex tachycardia that’s seen with other alpha adrenoreceptors antagonists
-useful in treating hypertensive patients
-some patients respond with extreme hypotension and loss of consciousness
-to avoid “first dose effect”, initially less dose should be slowly administered
Prazosin
-this is a prazson like drug wioth longer lasting qualities permitting once a day dose
-often givern to treat prostatic hypertrophy
Doxazosin
-this is a prazson like drug with longer lasting qualities permitting once a day dose
-often given to treat prostatic hypertrophy
Terazosin
-blocks beta 1 and beta 2 adrenoreceptors, so it is classified as being nonselective
-initailly used to treat cardiac arrhythmias
-can be used as an anesthetic (almost as potent as lidocane)
-also an effective hypertensive drug
-it is unknown how this drug lowers BP
Propranolol
-is primarily a beta 1 blocker
-is refered to as cardioselective
-reduces plasma renin but has less metabolic and bronchial effects
-can be given to patients with renal failure
Metoprolol
-is a cardioselective beta 1 blocker
-has a longer half life than metoprolol
-produces less CNS side effects than metoprolol
-excreted by the kidneys so should not be given to patients with renal problems
-can be given to patients with liver failure
Atenolol
-is a cardioselective beta blocker with a very short half live when given IV (10 – 15 min)
-short half life is due to rapid hydrolysis by red blood cells
-use dfor acute emergency control of ventricular HR in patients with atrial fibrillation or atrial flutter(particularly during inoperative anesthesia)
-may be safer to use in and more easily controlled in critically ill patient
Esmolol
-introduced for clinical use as a compound having both alpha and beta blocking properties
-is a nonselective beta antagonist and an alpha 1 selective blocker
-is an sntihypertensive agent that decreases total peripheral resistance with little reflex effect on the HR or cardiac output
Labetalol
-has actions similar to labetalol
-is a free radical scavenger and consquentally may protect the heart form damage
-is approved for treating patient with CHF
Carvedilol
-must be injected to have an effect
-injectgion causes short term stimulation of all cholinergic recpetors (but will nto enter the brain casue its highly charged)
-broken down by cholinesterase
-not used as a therapeutic agent
Acetylcholine
-only one of the choline esters that has well established clinical use
-is seen in both methacholine and carbachol
-is refractory to Achase inactivation
-useful in treating post operative urinary retention and atony of the GI tract
-has mostly muscarinic stimulating effects
Bethanechol
-stimulates all nicotinic receptors in the body
-injection of it stimulates all autonomic ganglia in the bosy (including the adrenal medulla) and stimulation of all skeletal muscle endplates
-if you know the predominant tone of the individual autonomic organ, you can predict the response of this drug on both the stimulating and blocking modes
Nicotine
-derived from mushrooms
-atropine is the antidote
-will stimulate all muscarinic receptors in the body whether innervated or not
Muscarine
-originally isolated from a south American shrub
-selectivly activates muscarinic recptors
-not highly charged so it will pass the BBB
-used ot treat glaucoma
-outflow of aqueous humor from the eye is enhanced by due to constriction of the iris sphincter muscle and ciliary body behind the iris
-these events widen the angle between the cornea and the iris where aqueous flow takes place
Pilocarpine
-derived from Calabar bean
-like acetylcholine it binds to anionic and esteratic sites on enzymes
-not highly charges so it can enter rthe CNS
-has little activity other than its action to inhibit AChase
Physostigmine
-short duration of action as it binds tightly to only one of the enzyme sites
-inhibot AChase only for munites
-is valuable in the diagnosis of M.G.
-patient may exibit skeletal muscle weakness that could be due to either too much AChase inhibition (cholinergic crisi) or insufficient AChase inhibition (myasthenic crisis)
-due to its short action, it is beneficial in the titration of the effective dose levels of longer acting anticholesterase agents
Edrophonium
-treats MG
-it is a potent reversible anti-AChase compound
-treatmetn of the disease is a long term process and some patient develop tolerance or allergies to specific drugs
-other agents may be better tolerated
Pyridostigmine
-is a CNS acting anticholinesterase used to treat Alzheimers
Donepezil
-common insecticides used in agriculture
-is not an anti-AChase compound but is converted by the liver to the active agent paraxon
Parathion
-readily absorbed following oral administration
-derived from plants such as the deadly night shade and has a history as a poison
-differs from scopolamine in that it produces the CNS excitation whereas scopolamine is a CNS depressant
Atropine
-atropine like alkaloid
-has a shorter duration of action
-readily absorbed through the skin
-used to prevent motion sickness
Scopolamine
-less potent and shorter acting muscarinic antagonist
-more useful for general opthalmological exams than atropine or scopalomine
Tropocamide
-synthetic muscarinic antagonist
-has few CNS side effects
-applied to the airway by an inhailer
-used in patient with COPD
-does not reduce volume or increase viscosity in the airway like atropine does
Ipratropium
-CNS acting antimuscarinic drug
-used to relieve symptoms of Parkinson’s
Benztropine
-atropine like agent
-used to treat spasms of the bladder seen after urologic surgery and in neurological disorders producing bladder hyperactivity
-can be administered orally or topically (via catheter) to decrease tone of bladder smooth muscle and thus improving incontinance
Oxybutynin
-ganglionic blocking drug
-only used presently as an experimental drug
-blocks all autonomic ganglia, but does not compete with Ach at the nicotinic receptors found on the end plate region of the skeletal muscle
Hexamethonium
Hemostasis -
control bleeding by epinephrine on a cotton ball (skin has only alpha receptors
Nasal decongestion –
(phenolethine) spray alpha stimulant up the nose
Local anesthetics -
can put epinephrine in gums during dental work
Hypertension-
(chlonodine or atenolol) to decrease BP and HR
Hypotension-
(phenylephrine) to increase BP
Cardiac stimulation-
(Dobutamine)
Bronchodialation-
(Terbutaline or albuterol) anything that stimulates beta 2 receptors
Allergic reaction-
if airway shuts down give EPI by whatever means possible
Appetite control-
amphetamine or methamphetamine
Narcolepsy-
amphetamine or methamphetamine
Behavioral disorders-
amphetamine or methamphetamine
Urine motility-
Terbutaline
Opiod withdrawl-
clonadine
Hypertension-
(propranalol) any beta 1 blocker will work
Glaucoma-
Pilocarpine
Angina
- (Propranolol, Metoprolol, Atenolol, Esmolol) any beta blocker
Post infarction prophylaxis-
Beta blockers forever
CHF-
metropolol
Stage fright-
propranolol
Migrane-
propranolol
Cardiac arythmian-
esmolol (cause it only lasts a few minutes, but any beta blocker will do)
Essential tremor-
propranolol
Pheochromocytoma-
(this is a tumor of the adrenal medulla) to control BP and HR alpha and beta blockers. Also the blood vessels have alpha 1 and alpha 2 receptors so use phenobenzamine
Benign prostatic hypertrophy-
(Doxazosin or Terazosin) block beta 1 receptor