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Exam 1
Pharmocology intro, pharmocogenetics, pharmacokinetics
53
Pharmacology
Undergraduate 3
02/06/2014

Additional Pharmacology Flashcards

 


 

Cards

Term
Pure Food & Drug Act (1906)
Definition
Fed. gov. (FDA) may enforce standards of drug strength & purity as officially designated by the United States Pharmacopoeia (USP) & National Formulary (FP)
Prohibits mislabeling & adulteration of drugs
Term
Food, Drug, & Cosmetic Act (1938)
Definition
Enforced by FDA through registration of all parties involved in manufacture, sale, & distribution of drugs
Required adequate testing of a compound to prevent marketing of a possibly toxic substance. New drugs must be safe as well as pure in order to be introduced into interstate commerce
Still does not require proof of effectiveness
Term
Kefauver-Harris Amendments (1962)
Definition
Required proof of efficacy as well as safety before any new drug could be placed in interstate commerce
Guidelines for conducting clinical trials
Established the Drug Efficacy Study Implementation (DESI)
Term
L. Omnibus Budget Reconciliation Act of 1990 (OBRA '90 - amended many times)
Definition
Amended 1965 Medicaid Law; implemented by the Health Care Financing Administration (HCFA)
New regulations & requirements
Participation of states in federal Medicaid program
Development of drug utilization review (DUR)
Patient counseling - pharmacist must offer counseling to patient. If patient refuses they sign paper admitting so
Term
Food & Drug Administration Modernization Act (FDAMA) (1997)
Definition
Allows for fast tracking of drugs for serious illnesses to market
Drug manufacturers have to give patients 6 months notice before they discontinue making a drug
Established clinical trial database for drugs for critical illnesses
Informs of "off-label" uses (Erythromycin off-label use is stimulation of bowel movement)
Incentives for pediatric drug research
Term
Best Pharmaceuticals for Children Act (BPCA) (2002) & Pediatric Research Equity Act (2003)
Definition
Both promote drug studies in children
See how existing drugs work in children and determine safety
Set up pediatric drug trials
Term
Schedule I
Definition
High abuse potential & no accepted medical use in the US
Investigational drugs - drug study
Term
Schedule II
Definition
Currently accepted medical use in US w/ high abuse potential resulting in severe physical or psychological dependence
Written prescription required w/ prescribers actual, legal signature
Must be dated same day as signed
No refills allowed
In emergency, verbal order may be given for limited quantity adequate to treat emergency, but must be followed by written prescription w/i 72 hrs. (However, not in AL --> state law)
Term
Schedule III
Definition
Abuse potential less than schedule II (but more likely to be abused b/c less stringent rules)
Written or verbal prescriptions allowed; valid for 6 months from date written
Limit of 5 refills
Term
Schedule IV
Definition
Abuse potential less than Schedule III, but same rules
Written or verbal prescriptions allowed; valid for 6 months from date written
limit of 5 refills
Term
Schedule V
Definition
Lowest abuse potential
Some drugs are non-legend both fed and state; purchase still subject to state regulations (ie: sudafed)
Term
Enteral Route
Definition
Oral (peroral, po)
Sublingual (sl) - tablets placed under tongue & allowed to dissolve; sometimes divided in 2, the 2nd being buccal (cheek)
Rectal (pr)
Capsules & tablets have rate limiting effects
Term
Parenteral Route - Injectables
Definition
Intravenous (iv)
Intramuscular (im)
Subcutaneous (sc; subQ)
Requires sterile dosage forms
Faster onset of action
Skill & training required
Used for drugs which do not undergo GI absorption, or which are unstable in GI tract
Term
Empty Stomach Drug
Definition
1 hr before or 4 hr after eating. Usually just tell patients 2 hr before or after b/c hard to remember last time you ate
Term
First Pass Effect (pre-systemic metabolism)
Definition
During process of absorption from GI tract drug may be altered (metabolized) in 1)gut wall and 2)liver. If drug gets metabolized as it passes through either of these sites it will likely not be effective before reaching systemic circulation
Term
Opthalmic Route
Definition
Must be sterile
Drops
Ointment
Disk insert
Used for local effects, diagnosis, & treatment of eye disorders
Term
Otic route
Definition
Drops (solution, suspension)
Contraindicated in perforated eardrum
Term
Nasal route
Definition
Drops
Sprays
Used primarily for local effects (decongestants)
May be used for systemic effects
Nose can get "hooked on" nasal sprays; withdrawals include stuffyness
Term
Respiratory route
Definition
Metered-dose inhaler (MDI) - nebulizer
Intended for local effects
Some systemic absorption may occur & cause side effects
Term
Dermal routes
Definition
Creams, ointments, lotions, shampoos, transdermal systems (patches),
May be used for either local or systemic effects (nitroglycerin ointments, patches..)
Term
Pharmacogenomics
Definition
Study of how genetic variations affect individual responses to drugs
Impacts therapeutic & adverse effects
Clinically relevant for several drugs thus far, though testing is only required for a few
Term
Phase 1 of metabolism
Definition
Catalized by cytochrome P450 family in liver
Induction (taking other drugs that increase activity of liver enzymes) & inhibition (taking other drugs that inhibit liver enzymes) are variables that can effect this step
Term
Phase II of Metabolism
Definition
Gut wall & liver
Usually can't do this phase first year of our lives
Term
Drug elimination
Definition
Kidneys, bile (followed by fecal excretion), pulmonary, milk, saliva (swallowed, reabsorbed)
Renal function approaches adult levels after about 1 yr
Progressive decline in renal function as we age; resulting drug accumulation most common cause of ADRs in elderly
Term
Agonist (full agonist)
Definition
drug which interacts with a receptor to produce a pharmacologic response that is the same response produced by the endogenous compound Lock & key fit - binds just like chemical would High affinity & efficacy
Term
Antogonist
Definition
"blockers"
Drug which interacts with receptor to block the actions of the endogenous agonist
High affinity
Zero efficacy
Term
Partial Agonist
Definition
Drug which can interact with a receptor but produces a much weaker pharmacologic response than a full agonist
These are sometimes used in pain management & anesthesia
Low affinity & efficacy
Term
Induction
Definition
Certain drugs & foreign chemicals stimulate the activity of drug metabolizing enzyme (P450) in the liver by inducing the synthesis of these enzymes. Net effect of induction is to increase metabolism of other drugs normally metabolized in the liver & to decrease pharmacological effects
Term
Inhibition
Definition
Certain drugs may inhibit the activity of drug metabolizing enzymes in liver. By interfering with metabolism of other drugs, inhibitors may increase or prolong activity of drugs normally metabolized in liver. Effects occur over a few days to a week
Term
Side effect
Definition
Unwanted effects that appear at normal doses required for therapeutic response
Expected & normal with most drugs
Term
Idiosyncratic effect
Definition
Rare adverse drug response resulting from genetic predisposition
Occurs w/ certain anesthetics
Term
Iatrogenic effect
Definition
Response where a drug causes a disease-like state
Aspirin may cause gastritis
Term
Toxicity
Definition
Unwanted effects that appear due to drug dosage that is increased beyond dose required for therapeutic response
Term
LD50
Definition
Lethal dose 50
Dose which is lethal to 50% of test subjects
Term
ED50
Definition
Effective dose 50
Dose which produces desired therapeutic effect in 50% of test subjects
Term
Therapeutic Index (TI)
Definition
Ratio of LD50/ED50 - how safe drug is
Lower than TI - more unsafe
Higher than TI - more safe
Term
Drug Allergy Type 1
Definition
May present as anaphylaxis with respiratory failure & shock
Quick, unpredictable, can cause death
Term
Drug Allergy Type 2
Definition
Autoimmune reaction, like rash
Term
Drug Allergy Type 3
Definition
Seen w/ injectables, inflamed blood vessels
Term
Drug Allergy Type 4
Definition
Skin, like a reaction to a glove
Term
hs
Definition
At night
Term
ac
Definition
Before meals
Term
pc
Definition
After meal
Term
Red Flag Drugs
Definition
Usually induce or inhibit liver enzymes
Term
Adsorption
Definition
Due to charcoal, kaolin-pectin (present in anti-diarrheals), & aluminum or magnesium-containing antacids
Activated charcoal is often put down an NG tube to bind to medicine so the body doesn't absorb it
Term
Complexation
Definition
Formation of a non-absorbable complex that reduces drug absorption.
Some drugs love Ca2+ (tetracycline) so you cannot eat any Ca2+ containing foods with it otherwise Ca2+ will complex w/ drug, often causing one to emesis
Term
Additive Effects
Definition
Combo of 2 drugs producing a pharmacologic effect which is sum of 2 individual drug effects (Acetominophine + hydrocodone) 1+1=2
Term
Synergistic Effects
Definition
Combo of 2 drugs producing pharmacological effect that is greater than sum of 2 individual effects. 1+1=3
CNS depression by combining alcohol & barbiturates
Term
Antagonism
Definition
Combined effect is less than effect produced by active drug alone. 2nd drug cancels out 1st. 1+1=0
Term
Signatura
Definition
Directions to patient; transcribed by pharmacist onto label of dispensed medication
Term
Subscription
Definition
Directions to pharmacist
Term
Compliance
Definition
Adherence to a recommended course of treatment
Term
6 Rights
Definition
Right patient, route, dose, time, drug, & to refuse
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