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57 Cards in this Set
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Primary neurotransmitter of the parasympathetic (cholinergic) nervous system. Stimulates cholinergic receptors |
Acetylcholine |
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An enzyme that inactivated acetylcholine and promotes reuptake of it. |
Acetylcholinesterase |
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Type of transport that requires a macromolecule to assist in transport. Molecules that transport drugs require energy (ATP) |
Active transport |
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Term for undesirable and potentially harmful drug effect |
Adverse effect |
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Drug that attaches to a receptor and initiates an action. Drug that binds to a receptor and activates a physiologic response or drug action |
Agonist |
On switch |
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Drug that stimulates the alpha adrenergic receptors on vascular smooth muscle and induce smooth muscle contraction and vasoconstriction |
Alpha adrenergic effect |
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Drug that attaches to a receptor, does not initiate an action, but blocks an agonist from producing an effect. Drug that binds to a receptor and interferes with other drugs or substances from producing a drug effect |
Antagonist |
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Drugs or effects that reduce the activity of the PNS |
Anticholinergic effect |
DRY |
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Blocks effects of excessive cholinergic (muscarinic) receptor stimulation. Prevents acetylcholine from binding. Used to dry bronchial tissues and salivation, mydriasis (dilation of eye), a GI antispasmotic, and to increase heart rate and in higher doses cause a progressive increase in heart rate by blocking muscarinic receptors on SA node. |
Atropine |
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System of nerves that innervate smooth and cardiac muscle (involuntary) of the internal organs and glands |
Auntonomic nervous system |
Involuntary |
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Stimulation of the heart (type 1) (positive chronotropic and ionotropic ^BP and HR (more squishy)) and the lungs (type 2) (used for bronchodilator and pre-term labor (relaxes muscles)). |
Beta adrenergic effect |
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Percentage of the drug dosage that is absorbed |
Bioavailability |
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Refers to the nerves that release acetylcholine and to the receptors of the PNS. Also refers to the drugs that stimulate this system |
Cholinergic effect |
WET |
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When both agonist and antagonist drugs bind to the same receptor and are administered together, they compete for the same receptor site |
Competitive antagonism |
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Drug moves from area of higher concentration to area of lower concentration may or may not use energy depending on the type |
Diffusion |
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Indicated for all stages of alzheimers. Acetylcholinesterase inhibitor. |
Donepezil |
Aricept |
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Relationship between dose and response is plotted as a graph. Drug response should be proportional to dose. As dose increases, so does the magnitude of response. (Should) |
Dose-response |
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Used for myasthenia gravis diagnosis. Increased muscle strength within a minute or so |
Edrophonium |
Tensilon |
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Hormone from the adrenal medulla that stimulates adrenergic receptors, usually during stress. Used in anaphylaxis, surgical procedures for local vasoconstriction and to prolong local anesthesia, cardiac stimulation (beta-1) in cardiac arrest, and bromchodilation (beta-2) in treatment of asthma |
Epinephrine |
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Elimination of drug from the body via kidneys, GI tract, or respiratory tract |
Excretion |
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These drugs easily cross membranes that separate body compartments. Repeatedly absorbed into blood. |
Fat-soluble drugs |
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Easily cross cell membranes and easily excreted by kidneys. |
Water-soluble drugs |
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Drug metabolism that occurs in the intestines and liver during oral absorption of drugs into systemic circulation |
First-pass effect |
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Increased intraocular pressure that causes retinal destruction and eventually causes blindness. Miotic drugs are given to constrict pupils and reduce intraocular pressure |
Glaucoma |
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Time required for the body to reduce amount of drug in plasma by 1/2 |
Half-life |
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Cholinergic receptors on smooth and cardiac muscle |
Muscarinic receptors |
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Autoimmune disorder of myoneural junction. Antibodies sit at the myoneural junction and block acetylcholine and impair transmission of impulses |
Myasthenia gravis |
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Inhibits acetylcholinesterase to potentiate cholinergic activity by preventing reuptake of acetylcholine. |
Neostigmine |
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Describes the process of drug absorption, distribution, metabolism, and excretion |
Pharmacokinetics |
How drug should work |
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Cholinergic receptors located on autonomic ganglia and skeletal muscles |
Nicotinic receptors |
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Alpha adrenergic receptors most affected by this drug. Vasoconstrictor (^SBP and DBP). Baroreceptor reflex that shows increased vagal activity that leads to reflex bradycardia. This is necrotic and does better in a central line. Impaired circulation from this drug can be treated with phentolamine |
Norepinephrine |
Levophed |
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Drug moves from area of higher concentration to a one of lower concentration. Medication penetrates cells by diffusing through the membrane. Depends on molecule size, solubility (fat or water), and concentration of drug in body compartments |
Passive transport |
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Looks at effects of drugs and mechanism of action |
Pharmacodynamics |
How drugs actually work |
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Non-selective beta blocker (1&2). Decreased ionotropic effect (less squishy) and decreased chronotropic (lower HR) effects. Treats supraventricular arrhythmias. Less cardiac output triggers vasoconstriction in periphery. Lower SBP and DBP. May cause bronchoconstriction. Lower glycogenolysis and less glucagon secretion. Used for HTN, angina pectoris, MI (relieves infarct), migraines (prophylactically), hyperthyroidism SNS stimulation. Has numerous CNS side-effects |
Propranolol |
Lol |
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Increases acetylcholine levels at the skeletal neuromuscular junction. Used to treat myasthenia gravis. |
Pyridostigmine |
Igmine |
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Uroselective for alpha 1 receptors of the prostate. Relaxes smooth muscles resulting in increased urine flow and lessens BPH symptoms. |
Silodosin |
A penis looks like a silo |
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Capable of causing birth defects or fatal abnormalities or development. Capable of causing abnormal development |
Teratogenic drug |
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Undesirable drug effect that implies drug poisoning. Can be very harmful or life-threatening. |
Toxicity |
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Constricts the pupils Slows heart by acting on the vagal nerve (CN X) Constricts breathing (bronchoconstriction) Stimulates digestion Stimulates gallbladder Contracts bladder Stimulates sex organs |
Parasympathetic nervous system |
Rest and digest |
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Dilates pupils Inhibits salivation Accelerates heart Facilitates breathing Inhibits digestion Stimulates release of glucose Secretes epinephrine and norepinephrine Relaxes bladder Inhibits sex organs |
Sympathetic nervous system |
Fight or flight |
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"On" switch of this nervous system = cholinergic agonist = in extreme cases SLUDGE |
Parasympathetic |
Fluid. Fluid everywhere |
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"Off" switch of this nervous system = anticholinergic (cholinergic antagonist) = DRY |
Parasympathetic |
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"On" switch of this nervous system = adrenergic agonist = FIGHT |
Sympathetic |
Adr = activity/adrenaline |
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"Off" switch of this nervous system = adrenergic antagonist/blockers = REST |
Sympathetic |
Adr = activity/adrenaline |
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Medication is take by mouth. Best whenever possible. Safest and most convenient route |
Oral (PO) |
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Taken under the tongue. Used when rapid effects are needed. |
Sublingual |
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Medication is taken in between the cheek and gum. Convenient dosage form for certain drugs. |
Buccal |
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Medication route for when the pt can't swallow or take oral medications and parenteral drugs are not indicated. Also used for local effects. |
Rectal |
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Medication is a patch on the skin typically. Convenient dosage form that provides continuous absorption and systemic effects over many hours. |
Transdermal |
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Typically an injection into an adipose layer. For drugs inactivated by the GI tract. |
Subcutaneous (subq) |
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Typically an injection into a muscle. For drugs that have poor oral absorption, when high blood levels are required, and when rapid effects are desired. |
Intramuscular (IM) |
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Medication goes through a catheter in a vein. In emergency situations, this is used where immediate effects are required. Also when medications are administered by infusion. |
Intravenous (IV) |
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Medication is put through a port in an artery close to an organ. Used for local effects within an internal organ. |
Intraarterial |
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Used for drug administration into the spinal cord for local effects |
Intrathecal |
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Used for medications that act on the respiratory tract |
Inhalation |
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Medications are applied to the skin, eye, or ear for local effects |
Topical |
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Medication is placed in the female reproductive tract for local effect. |
Vaginal |
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