Pharmacology Basics Part 1 Flashcards
Overview Nursing Responsibilities
Responsibility is rather vast; lot info have to know about every drug; lot nursing action need do related to med admin: how adequately give drugs, in how assess before give med, parameters monitor for med, how eval affect med, teach about med
What drug is ordered – name and classification
Why medication prescribed
Therapeutic effects on body
Adverse and/or toxic effects possible
Contraindication/special considerations
How medication is supplied by pharmacy
Correct route/dosage
Patient education
Patient monitoring and evaluation
Prototype drugs (like exemplars)
Impossible to memorize thousands of drugs and individual differences
Course addresses general drug information
Prototypes serves as a model for a pharmacologic class
Once students grasp basic concepts, information can be applied to other medications in same class
Course addresses general drug information (Prototype drugs (like exemplars))
Practicing nurses must have current knowledge of specific details for drugs administering – see drug guides (Mosby’s Nursing Drug Handbook)
Prototypes serves as a model for a pharmacologic class (Prototype drugs (like exemplars))
Drug is well understood
Has known action and adverse effects
Is used to compare other drugs in the same pharmacologic class
Drug names and classifications
Names:
Classifications:
Names: (Drug names and classifications)
See 3 diff names in handbook
Chemical: speaks to actual chemical structure of drug; not care about this; is chemical components
Generic: original name for common understanding; same affect but diff fillers/binders from brand and generic
Trade (brand) name: assigned by pharmaceutical company; familiar with and ones can say
EX:
Trade (brand) name: assigned by pharmaceutical company; familiar with and ones can say (Names: (Drug names and classifications)
Fillers/binders differ between brand and generic but they are the same in the end basically
Fillers/binders differ between brand and generic but they are the same in the end basically (Trade (brand) name: assigned by pharmaceutical company; familiar with and ones can say (Names: (Drug names and classifications)
May alter bioavailability - means active part of the drug
EX: (Names: (Drug names and classifications)
Class: histamine 2 (receptor) antagonists - class pharmacologically - telling how drug works
Class: Proton pump inhibitor - speaking terms pharmacologic action
Class: histamine 2 (receptor) antagonists - class pharmacologically - telling how drug works (EX: (Names: (Drug names and classifications)
More than just 1
dine - generic names
Ranitidine (Zantac)
Cimetidine (Tagamet)
Famotidine (Pepcid)
Nizatidine (Axid AR)
Prototype: cimetidine
Largely same thing between brand and generic but fillers/binders may differ but does not matter; same effect and same things but fillers/binders differ; each brand just made their own specialty to put on the market to make it diff and better
Class: Proton pump inhibitor - speaking terms pharmacologic action (EX: (Names: (Drug names and classifications)
Omeprazole (Prilosec)
Esomeprazole (Nexium)
Lansoprazole (Prevacid)
Pantoprazole (Protonix)
And more….
Prototype: omeprazole
Classifications: (Drug names and classifications)
Can be classified by both
Therapeutic use:
Pharmacologic structure:
EX:
Therapeutic use: (Classifications: (Drug names and classifications))
based on usefulness in treating diseases or disorders; how treats disease
Analgesics (pain meds), antihypertensives (used treat high BP)
Pharmacologic structure: (Classifications: (Drug names and classifications))
how drug produces physiological effect at molecular/tissue level; how drug works
Calcium channel blocker - also antihypertensive (therapeutic use)
EX: (Classifications: (Drug names and classifications))
Therapeutic class: Antihypertensives
Pharmacologic class: Angiotensin converting enzyme inhibitor
Therapeutic class: Antihypertensives (EX: (Classifications: (Drug names and classifications)))
Angiotensin converting enzyme inhibitor
Beta adrenergic blocker
Vasodilators
Calcium channel blockers
And more….
Pharmacologic class: Angiotensin converting enzyme inhibitor (EX: (Classifications: (Drug names and classifications)))
Lisinopril
Captopril
Enalapril
Quinapril
Benazepril…
Sources of drug/med info
Lots diff source
Drug References - (many)
Medication Label
Package Insert
Drug References - (many) (Sources of drug/med info)
Nursing drug handbook (first as nurse) - always look at drug handbook to look it up and see what already know and can apply any past knowledge but need do research on own; see if have questions; handbooks written for what really need know as nurse - highlights
Pharmacology textbook
Food and Drug Administration website (www.fda.gov)
Pharmacist on unit - people on unit; pharmacist - do homework before; ask charge nurse because seen it and done it and can help you out; prescriber - call person who ordered make sure armed with knowledge
Medication Label (Sources of drug/med info)
Other sources of info - need be able identify imp areas of label
Labels have specific information that identifies a specific medication
Understanding how to read a label is essential!!
Package Insert (Sources of drug/med info)
Prepared by manufacturer; full prescribing information
Always lot info in those; not used often by nurse but with every drug
Drug label
Most imp parts as a nurse: start at center very center: brand name (because circle with R - registered trademark); generic name on label (lot times have trouble with it); drug dose - tells how prepared; expiration date - check before admin make sure not expired; storage information - really pertinent and special
Sources of meds
Meds from variety sources; original meds found from active chems in plants
Natural Sources
Synthetic sources
Natural Sources (Sources of meds)
Plants
Animal products
Inorganic compounds
Plants (Natural Sources (Sources of meds)
Active chemical found in a plant (ex. Digitalis)
do have some meds from plants but most synthetically
Animal products (Natural Sources (Sources of meds)
Replace human chemicals not produced because of disease or genetic issues
Genetic engineering (ex. Insulin, thyroid)
Some from animal products; insulin first discovered chemical lower BG take insulin from pigs and modified and engineered so safe for humans now most synthetically; thyroid - meds for hypo from pigs and some made synthetically
Inorganic compounds (Natural Sources (Sources of meds)
Salts of various elements (ex. Iron or fluoride)
Synthetic sources (Sources of meds)
Most drugs produced synthetically
Most meds made synthetically in lab - most effective and cheapest way
Drug approval and legal regulation
FDA
Legal regulation of drugs: Drug enforcement agency (DEA)
Schedule controlled substances
OTC drugs
Herbal and dietary supplements
FDA (Drug approval and legal regulation)
Responsible for protecting public health by ensuring safety, efficacy, and security of drugs, biological products and medical devices
Takes sig role that drugs are safe - do all reg for the creation meds, how meds studied, brought to market in US
Ensure safety of nation’s food supply, cosmetics, and products that emit radiation and more…
Drug approval process tightly controlled by FDA
Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Takes several years - meds go through rigorous testing process; 5-10 years for entire process
Several phases (next slide) - Phases of FDA drug approval
Several phases (next slide) - Phases of FDA drug approval ( Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Preclinical Investigational Studies
Phase I Studies
Phase II Studies
Phase III Studies
Phase IV Studies
Preclinical Investigational Studies (Several phases (next slide) - Phases of FDA drug approval ( Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Tested on laboratory animals
Have ideas; biochemists figure out how to treat disease on molecular level and test on animals to see if do what do and if any major consequences
Trying to figure out how make drug work way want to without major adverse effects
Phase I Studies (Several phases (next slide) - Phases of FDA drug approval ( Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Tested on healthy human volunteers (dose range and pharmacokinetics)
How drug works in humans; start looking at dose appropriate to have affect want without too many adverse effects
Phase II Studies (Several phases (next slide) - Phases of FDA drug approval ( Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Tested on clients with disease (therapeutic effects, adverse effects)
See How works on them
Phase III Studies (Several phases (next slide) - Phases of FDA drug approval ( Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Large sample size; placebo and/or blinded studies (effectiveness, safety, dose)
Submission of new drug application/approval; approved by FDA and given name; patent 5-7 years
Get drug approval from FDA and given generic and brand name by company and brought to market and drug patented for 5-7 years; patent because costs lot money to make drugs so pharmaceutical company can make money before goes generic and no competition
Phase IV Studies (Several phases (next slide) - Phases of FDA drug approval ( Drug approval process tightly controlled by FDA (FDA (Drug approval and legal regulation)
Post marketing studies (2+ years); new or severe adverse effects; black box or recall
After drug brought to market, cont monitor drug, prescribers prescribing meds to pat report if find anything that might be related to med; some meds taken off the market