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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

An enzyme that inactivated acetylcholine and promotes reuptake of it.

Acetylcholinesterase

Type of transport that requires a macromolecule to assist in transport. Molecules that transport drugs require energy (ATP)

Active transport

Term for undesirable and potentially harmful drug effect

Adverse effect

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

Drug that stimulates the alpha adrenergic receptors on vascular smooth muscle and induce smooth muscle contraction and vasoconstriction

Alpha adrenergic effect

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

Drugs or effects that reduce the activity of the PNS

Anticholinergic effect

DRY

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

System of nerves that innervate smooth and cardiac muscle (involuntary) of the internal organs and glands

Auntonomic nervous system

Involuntary

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

Percentage of the drug dosage that is absorbed

Bioavailability

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

When both agonist and antagonist drugs bind to the same receptor and are administered together, they compete for the same receptor site

Competitive antagonism

Drug moves from area of higher concentration to area of lower concentration may or may not use energy depending on the type

Diffusion

Indicated for all stages of alzheimers. Acetylcholinesterase inhibitor.

Donepezil

Aricept

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

Used for myasthenia gravis diagnosis. Increased muscle strength within a minute or so

Edrophonium

Tensilon

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

Elimination of drug from the body via kidneys, GI tract, or respiratory tract

Excretion

These drugs easily cross membranes that separate body compartments. Repeatedly absorbed into blood.

Fat-soluble drugs

Easily cross cell membranes and easily excreted by kidneys.

Water-soluble drugs

Drug metabolism that occurs in the intestines and liver during oral absorption of drugs into systemic circulation

First-pass effect

Increased intraocular pressure that causes retinal destruction and eventually causes blindness. Miotic drugs are given to constrict pupils and reduce intraocular pressure

Glaucoma

Time required for the body to reduce amount of drug in plasma by 1/2

Half-life

Cholinergic receptors on smooth and cardiac muscle

Muscarinic receptors

Autoimmune disorder of myoneural junction. Antibodies sit at the myoneural junction and block acetylcholine and impair transmission of impulses

Myasthenia gravis

Inhibits acetylcholinesterase to potentiate cholinergic activity by preventing reuptake of acetylcholine.

Neostigmine

Describes the process of drug absorption, distribution, metabolism, and excretion

Pharmacokinetics

How drug should work

Cholinergic receptors located on autonomic ganglia and skeletal muscles

Nicotinic receptors

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

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

Looks at effects of drugs and mechanism of action

Pharmacodynamics

How drugs actually work

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

Increases acetylcholine levels at the skeletal neuromuscular junction. Used to treat myasthenia gravis.

Pyridostigmine

Igmine

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

Capable of causing birth defects or fatal abnormalities or development. Capable of causing abnormal development

Teratogenic drug

Undesirable drug effect that implies drug poisoning. Can be very harmful or life-threatening.

Toxicity

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

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

"On" switch of this nervous system = cholinergic agonist = in extreme cases SLUDGE

Parasympathetic

Fluid. Fluid everywhere

"Off" switch of this nervous system = anticholinergic (cholinergic antagonist) = DRY

Parasympathetic

"On" switch of this nervous system = adrenergic agonist = FIGHT

Sympathetic

Adr = activity/adrenaline

"Off" switch of this nervous system = adrenergic antagonist/blockers = REST

Sympathetic

Adr = activity/adrenaline

Medication is take by mouth. Best whenever possible. Safest and most convenient route

Oral (PO)

Taken under the tongue. Used when rapid effects are needed.

Sublingual

Medication is taken in between the cheek and gum. Convenient dosage form for certain drugs.

Buccal

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

Medication is a patch on the skin typically. Convenient dosage form that provides continuous absorption and systemic effects over many hours.

Transdermal

Typically an injection into an adipose layer. For drugs inactivated by the GI tract.

Subcutaneous (subq)

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)

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)

Medication is put through a port in an artery close to an organ. Used for local effects within an internal organ.

Intraarterial

Used for drug administration into the spinal cord for local effects

Intrathecal

Used for medications that act on the respiratory tract

Inhalation

Medications are applied to the skin, eye, or ear for local effects

Topical

Medication is placed in the female reproductive tract for local effect.

Vaginal