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NUR 3145 - EXAM 1 | QUESTIONS & ANSWERS | 100% CORRECT

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NUR 3145 - EXAM 1 | QUESTIONS & ANSWERS | 100%
CORRECT

What are pharmacokinetics? - the study of absorption, distribution, metabolism, and
excretion of drugs

What is absorption? - How a drug enters the body; (what happens to a drug from the
time it enters the body until it enters the circulating fluid)

What affects drug absorption? - route, blood flow, food, drug formulation

What are the possible routes of drug administration? - IV, IM, subcutaneous, Oral,
Rectal, mucous membrane, topical, inhalation

What routes of drug administration are the fastest? - IV then IM

What does enteric coated mean and how does it affect oral administration? - the enteric
coating protects the stomach, CAN'T CHEW OR CRUSH

What two places does drug absorption typically occur? - Stomach or veins

What is the first pass effect? - Drugs absorbed from the stomach and small intestine
travel to liver, where they may be inactivated before reaching target organ(s) (less
concentrated after going through stomach)

What is distribution? - movement of a drug to body tissues

What affects distribution of drugs? - blood flow to tissues (ie intramuscular is quicker in
men), drug solubility, tissue storage, drug protein binding

What is metabolism? - Breaking down of drug, usually by enzymes, changes drug into
less active, chemical form

What is the primary site of drug metabolism? - Liver

Which group of people struggle to metabolize drugs? - Infants (b/c still developing) and
those with liver disease

What is excretion? - How drug exits body

, What is the primary site of drug excretion? - kidneys

How can we measure ability to excrete drugs? - Blood work ( increased creat and
BUN), urine test

What does half life mean? - time it takes for 1/2 of drug to leave system

Drug X has a half-life of 8 hours. If 800mg is administered at 1:00 a.m, how much of the
drug would be eliminated after 24 hours? - 700mg eliminated, 100mg left

Drug V has a half-life of 2 hours. If 450 mg is administered at 4:00 p.m, at what time will
the drug be considered eliminated? - 2 am

Drug J has a half-life of 5 hours. If 500mg is administered at 8:00 p.m, how much would
be eliminated after 15 hours? - 425mg would be eliminated (75mg would be left)

Drug B has a half-life of 9 hours. If 300mg is administered at 5:00 p.m, at what amount
would the drug be considered to be completely eliminated? - 2 pm

What is the therapeutic level? - Point at which the drug has maximum desired effect
(when drug is working it's best)

What is the critical concentration of a drug? - The amount of a drug that is needed to
cause a therapeutic effect
(the drug's personal best)

What is the therapeutic index? - ratio of toxic dose to therapeutic dose

How do we regulate therapeutic effect or maintain critical concentration? - take drug as
directed @ same time, and until complete

What is a loading dose? - initial higher dose of a drug that may be given at the
beginning of treatment to RAPIDLY achieve a therapeutic level (usually drugs with
longer half-life)

What is a maintenance dose? - keep concentration within therapeutic range, (after
loading dose!)

What is a superinfection? - infection comes as result of taking other medications
(usually because meds kill good bacteria too)

What are signs of superinfection? - C. Diff, thrush (dry mouth), white in mouth,
diarrhea, UTI, vagina (yeast), fever, patches (skin?)

What is neuroleptic malignant syndrome (NMS)? - a life threatening side effect of
medications

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