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Unit 2 Pharmacology
| Question | Answer |
|---|---|
| What are some of the different sources of drugs? | plants, animals, minerals, lab synthesis |
| digitialis plant produces what drug? | lanoxin (digoxin) treats heart conditions |
| bark of the yew tree produces? | taxol (paclitaxel) stops cancer cell growth stabilizing microtubules and prevents cell division |
| what drug can caffeine produce | nicotine |
| animal hormones can be derived to make? | insulin in 80s (pig or cow pancreas) , had higher incidence of allergic reactions |
| what kind of minerals can make drugs? | calcium, zinc, iron |
| lab synthesis is also known as | genetic engineering |
| what does synthetic mean | nucleus of drug from natural source and chemical structure is altered |
| examples of lab synthetic drugs | procrit, treats those with low rbc's (made up of protein human urethropotin) |
| why are drugs in certain therapeutic classifications | therapeutic classifications include what drugs work for the same endgoal (antihypertensives, lower bP, analgesics pain relievers) |
| what is the overall goal for different drug classes | to reduce pain |
| what is pharmacological classification | how drug works or exerts activity |
| example of drug within pharmacological classification | antihypertensives (lowering bP) - ace inhibitors (inhibits conversion of angiotensin 1-2) |
| what are prototype drugs | lead agent in drug class, used to understand whole class of drugs with similar chemical structures, actions, side effects |
| chemical names of drugs are assigned by | IUPAC |
| generic names of drugs are assigned by | US adopted name council (active ingredient) |
| brand/trade names of drugs are assigned by | pharmaceutical company |
| combination drugs are | multiple drugs in 1 dose (caduet: combo of 2 meds) |
| pharmacokinetics def | study of how drug is affecting body from administration to complete elimination |
| what is absorption | movement of drug from site of administration to various tissues of body |
| routes of absorption | oral drugs must absorb through intestinal wall and enter portal vein before passing through liver and into body's circulation |
| bioavailability def | amt of drug available after passing through the liver |
| interactions | anything that can increase risks for interactions (changes in acidity in stomach) (changes the way another medication affects the body) |
| distribution def | movement of drug by circulatory system to intended site of action |
| how does distribution work | drugs enter blood after they absorb through intestinal wall or alveoli in lungs |
| where are areas of body that receive highest level of drug and why | liver kidneys heart due to rich blood supply |
| areas of body that don't have rich supply of blood | bones or areas that have a natural barrier (brain's blood brain barrier) |
| differences between drugs that have protein bound molecules vs not | with protein bound molecules allow it to be more pharmacologically active |
| what is metabolism / biotransformation | change that occurs in a medication into a more or less potent form of medication (can be more soluble or inactive form of medication) |
| organ most responsible for metabolism of drugs | liver |
| what is cytochrome p450 | referring to hepatic metabolism , large class of enzymes that encompass majority of meds |
| first pass effect | when passing through liver, actual amt of drug to body is less than what client ingested orally (less than 100 bioavailability) |
| what is bioavailability | amt of oral drug available after passing thru liver |
| what kind of drugs bypass first pass effect | parenteral drugs due to absorption through vein or SUBQ |
| what is excretion | elimination of medication or metabolites thru various parts of body |
| due to renal kidney failure, what can happen for drugs | kidneys can hold onto drugs longer due to renal failure |
| what is onset | amt of time medication takes to demonstrate therapeutic response |
| what is duration of action | length of time the medication's therapeutic effect lasts without additional doses |
| trough level meaning | point in time when medication is at its lowest level in the body |
| what level do we want to be for drug to be most effective | in between therapeutic range |
| what is serum drug concetraiton | you can draw blood to get levels to make sure drug is in therapeutic range |
| what is pharmacodynamics | biochemical changes that occur in body as a result of taking a medication (what drug actually does to body) |
| what is lock n key | joining of a drug molecule with reacting site on surface of cell |
| what are agonists | medications that bind with receptors and increase a body's response |
| what are antagonists | medications that bind with receptor and either block or reduce body's response |
| what is a partial agonist | drug that binds to receptor but response is reduced |
| ex of antagonist | narcan blocks fent from reaching their receptor sites |
| what is an idiosyncratic | abnormal response to medication (benadryl makes you tired and calm) |
| what is pharmacotherapy | desire to therapeutic outcome |
| what is empiric | based on clinical probability (uti patient) |
| what is prophylactic | hoping to prevent illness/outcome in PLANNED event (before surgery give antibiotics to decrease risk of infection) |
| what are side effects | secondary unwanted effect (diarrhea) minor |
| what are adverse reactions | unintended pharmacological effect even when med is given correctly |
| what does an allergic response mean | hypersensitivity to drug |
| what is additive mean | 2 drugs with similar actions that are given together adds their effects 1+1 =2 |
| what does synergistic mean | when two medications taken together work more strongly than expected 1+1 = 3 ex |
| incompatability | 2 drugs mix together and result is chemical deterioration of 1 or both drugs 1+1 = less than 2 |
| what is Iatrogenic | induced inadvertently (occurs by providers treatment but not med error) (patient fell due to IV but not ur fault they fell) |
| what is teratogenic | structural defects in fetus (nono preggo) |
| what is carinogenic | cancer causing |
| food can do what to absorption of drugs (enteral) | when administered at same time, it can delay absorption |
| parenteral nutrition | amino acids, electrolytes delivers total dietary nutrients to patients |
| for geriatric clients what is polypharmacy | taking too many meds at same time (2 many cooks in kitchen) |
| what is contraindications | medications provider SHOULD NOT prescribe due to potential to cause serious or life threatening adverse drug reactions |
| parenteral meds def | IV, SUBQ, IM |
| what is topical | apply to skin eyes nose |
| what is enteral def | methods of drug admin involving GI tract such as oral, sublingual buccal, rectal |