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PHARM 1 EXAM
PHARM Exam 1; from notes - Alison Miles
| Question | Answer |
|---|---|
| pharmacology | study of meds and it's action on the body |
| schedule I; Highest Potential | NO therapeutic use (marijuana, cocaine, heroin) |
| schedule II; High Potential | SOME use (morphine, demoral) |
| schedule III; Moderate | Rx needed (codeine, vicoden) |
| schedule IV; Lower | Therapeutic with RX (valium) |
| schedule V; Lowest | used without Rx |
| absorption | influenced by route of administration |
| distribution | circulation to plasma and tissue binding sites; site of action; organs of excretion |
| factors affecting distribution | blood flow; plasma protein binding; tissue binding or receptor sites; chemical properties of the drug |
| Metabolism | making drug water soluble or more polar; processing and breaking down of drugs by body enzymes and chemical transformation: liver, intestines |
| elimination | primary organ is kidneys (also frequently site of toxicity) |
| Enterohepatic | circulation (drugs that are concentrated in bile before entering intestines) |
| Volatile drugs | exists as a gas or vapor are eliminated through lungs (general anesthesia) |
| Half-life | time required to attain 50% of steady state; shorter 1/2 life-more frequent dosing; longer 1/2 life-lasts longerrelationship between drug volume in body and clearance |
| tolerance | decreased response to drug, requiring increased dosage to achieve same effect |
| dependence | repeatedly need drug to function normally |
| synergistic interaction | elicited when effects of the combined drugs are greater than the combined responses of individual drugs |
| potentiation | occurs when a drug that has no effect itself enhances the effect of a second drug |
| antagonism | when one drug inhibits the action of another drug |
| infants | more body water and less body fat; renal elimination is reduced; lack gastric enzymes responsible for drug metabolism; drugs passed through breast milk |
| gender | no significant role in drug action |
| placebo effect | "sugar pill"; substitute inactive substance given for purpose of pleasing a patient's desire for drugs |
| vitamin K | decreases effects of anticoagulants (warfarin, coumadin); leafy green veggies have a lot of vitamin K |
| CNS (central nervous system) | brain & spinal cord |
| PNS (peripheral nervous system) | all nerves outside of brain & spinal cord |
| SNS (somatic nervous system) | sensation & voluntary movement |
| ANS (autonomic nervous system) | functions that are essential to survival; include all organs necessary for survival |
| sympathetic | "fight or flight" |
| parasympathetic | "rest or digest" |
| Acetylcholine | cholinergic (similar to "rest & digest") |
| Norepinephrine | adrenergic (similar to "fight or flight") |
| anti-cholinergic agents | BLOCK muscarinic receptors |
| adrenergic agonist drugs | "mimic" activity of sympathetic nervous system; USES: hypovolemic shock, hypotension, asthma, cardiac arrest, allergic reactions, heart block, increased BP, nasal congestion |
| adrenergic antagonist drugs | adrenergic blocking drugs; reacts on smooth muscle; USES: hypertension, BPH |
| anxiety | feeling of apprehension, worry, or uneasiness that may or may not be based on reality |
| types of anxiety | general anxiety, panic disorder, phobias, obsessive-compulsive disorder, post-traumatic stress disorder |
| anxiolytic drugs | meds necessary when anxiety interferes with daily life; aka: anti-anxiety meds; used to manage anxiety disorders & for short-term treatment of symptoms |
| potentiating | decreasing effects by itself |
| benzodiazepines | NEVER discontinue abruptly |
| sedative | drug that produces a relaxing, calming effect; usually given in daytime |
| hypnotic | drug that induces sleep |
| Barbiturates | act to depress CNS; reduces amt of time in rapid eye (REM) stage; abrupt w/d may cause dreaming, nightmares, or insomnia |
| TCAs (tricyclic antidepressants) | inhibit reuptake of norepinephrine or serotonin at the presynaptic neuron |
| SSRIs (selective serotonin reuptake inhibitors) | inhibit CNS neuronal uptake of serotonin |
| MAOIs | a LOT of drug and food interactions (negative); causes extremely high BP |
| amphetamines | act to stimulate the CNS |
| anorexiants | act on appetite center in hypothalamus, use in obesity; high abuse potential |
| analeptics | stimulate CNS (dopram, vivarin) USES: respiratory depression, relieve fatigue |
| phychiatric disorder (aka: neuroleptic drugs) | extreme personality disorganization and loss of contact with reality |
| psychosis symptoms | hallucinations or delusions, disorganized speech, behavior disturbance, social withdrawal, flattened affect, anhedonia |
| typical anti-psychotic agents | act by inhibiting or blocking dopamine release in the brain |
| tardive dyskinesia | rhythmic involuntary movements of tongue, face, mouth, jaw, or extremities (no known treatment of this) |
| lithium | considered for it's use in regulating severe fluctuation of manic phase of bipolar disorder |
| manic | state of restlessness |
| degenerative diseases | medication is unable to cure most |
| cholinesterase inhibitors | used to treat dementia associated with Alzheimer's disease (doesn't cure..just slows progression) DECREASES LEVELS OF ACETYLCHOLINE IN CNS |
| Multiple sclerosis | autoimmune disorder of CNS; antibodies target & slowly destroy tissues in the brain & spinal cord |
| convulsion |