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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 |