Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
115 Cards in this Set
- Front
- Back
controlled substance: schedule categories refers to the potential for
|
dependency and abuse to occur
|
|
category 1
abuse potential: medical use: dependency: |
high
none severe (physical addiction can occur) |
|
category 2
abuse potential: medical use: dependency: |
high
accepted severe physical and or psychologic *these drugs can't be refilled* |
|
category 3
abuse potential: medical use: dependency: |
less than category 2
accepted moderate/low physical or high pscyhologic |
|
category 4
abuse potential: medical use: dependency: |
less than 3
accepted limited physical or psychologic |
|
category 5
abuse potential: medical use: dependency: |
less than 4
accepted limited physical or pschologic = no real potential |
|
what category
heroin |
1
|
|
what category
tylenol |
3
|
|
what category
marijuana |
1
|
|
what category
hydrocodone |
3
|
|
what category
codeine |
2
|
|
what category
vicodin |
3
and lortab |
|
what category
fentanyl |
2
|
|
what category
valium |
4
diazepam |
|
what category
cocaine |
2
|
|
what category
amphetamine |
2
|
|
what category
lorazepam |
4
|
|
what category
alprazolam |
4
|
|
what category
propoxyphene |
4
|
|
what categories have high potential for sedation to occur in the client
|
2,3,4
|
|
the intensity of the drug response is determinted by:
|
the concentration at sites of action
|
|
the primary determinant of the concentration is the:
|
administered dose
|
|
when administration is performed correctly, the dose that was given will bear a close relationshop to the:
|
prescribed dose
|
|
administration
-what are the 3 important determinants of drug responses |
dosage size
route timing of administration |
|
administration
what are the 2 bullets under this category" |
because of poor patient adherence and medication errors by hospital staff, drugs are not always administered as prescribed
|
|
administration
what can result from -medication errors -poor patient adherence (patient is not compliance) |
result may be toxicity or treatment failure
|
|
pharmokinetics deteremines what:
what are the components of pharmokinetics? |
how much of an administered dose gets to the site of action
drug absorption drug distribution drug metabolism drug excretion |
|
once a drug has reached its site of action, ____ processes determine the nature and intesnsity of the response
|
pharmacodynamic
|
|
what is thought of as the impact of the body on drugs?
what is thought of as the impact of drugs on the body? |
pharmacokinetics
pharmacodynamics |
|
what are the 3 categories under Pharmacodynamics
|
-drug receptor interaction
-patients functional state -placebo effects |
|
Pharmacodynamics
the initial step leading to a response is the: what does this interaction result in? |
binding of a drug to its receptor
(the drug receptor interaction is followed by a sequence of events that ultimately results in a resonse) |
|
Pharmacokinetics and Pharmacodynamics
Characteristics unique to each patient can influence both of these processes and by doing so can help determine the patien's response to a drug. The sources of individual variation include (4) |
physiologic variables
pathologic variables genetic variables drug interactions |
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) diminished function of the kidneys |
pathologic variable
|
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) age |
physiologic
|
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) gender |
physiologic
|
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) dminished function of the liver |
pathologic
|
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) alters metabolism of drugs |
genetic variables
|
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) weight |
physiologic
|
|
sources of individual variation
-which variable (physiologic, pathologic, genetic) can predispose the patient to unique drug reactions |
genetic variables
|
|
Pharmacokinetics
what is the movement of a drug from its site of administration to the blood |
absorption
|
|
Pharmacokinetics
what ist he movement of the drug from where you give it to the blood |
absorption
|
|
Pharmacokinetics
the preparation of the drug plays an important role in the rate of absorption. examples are -enteric coating dissolves where? (intestine or stomach) |
oral tablets, enteric coated, and sustained release preparations
intestine |
|
Pharmacokinetics
the amount of the medication absorbed determines: |
intensity
|
|
Pharmacokinetics
the route of administration affects what: ex: depot injection -it's like giving someone a shot with yogurt. what kind of drug is it? |
rate and amount of absorption
suspension and it takes the body awhile to absorb it so its a long acting drug |
|
Pharmacokinetics
the meds in your stomach are based upon the |
pH in our stomach (our stomach is acidic)
|
|
for an oral tablet, drugs must pass through what kind of cels in order to be absorbed into the circulatory system?
|
epithelial cells (GI tract is lined with them)
|
|
surface area: is a major determinant
the (smaller or larger) the surface area, the (faster or slower) the absorption will be |
larger
faster |
|
what organ has the largest GI surface area and this is where the majoriry of oral medications are absorbed
|
small intestine
absorbed in INTESTINE not the stomach |
|
how does lipid solubility affect absorption?
|
how fatty is the product
-the fattier it is, it will slip into the cells and get in there |
|
what do they mean by pH partitioning?
|
for example, aspirin.
the pH in your intestine is alkalotic (your stomach is acidic) and aspirin is an acid. when the aspirin hits the small intestine and beacuse its an acid and the intestine is alkalotic, it will try everning itself out so it can pass through the wall |
|
the (lower or greater) the pH difference, the (faster or slower) the diffusion
|
greater
faster |
|
what is the first-pass effect?
liver metbaolism may inactivate the drug..if so, the first pass effect: what might have to be administered to achieve the desired effect: |
drugs absorbed by the small intestine are transported to the liver before being circulated to the rest of the body.
the liver may metabolize much of the drug before it enters circulation. when the blood hits the liver for the first time, there is an amount of medication that is inactivated. this mechanism is referred to as the "first pass effect" lowers the amount of active drug released into systemic circulation higher drug dosages |
|
first pass effect occurs mostly with what kind of medications
|
PO (oral)
|
|
enteral is administered by:
parenteral: administered by |
ingesting (give through mouth)
injecting with an injection |
|
routes of administration
po |
oral
|
|
routes of administration
sl |
sublingual (under tongue)
|
|
routes of administration
sc |
subcutaneous (beneath the dermis and into the subcutaneous tissue usually in the pts upper arm, thigh, or abdomen
|
|
routes of administration
IM |
intramuscular
|
|
routes of administration
IV |
intravenous
|
|
routes of administration
top |
topical
|
|
routes of administration
neb |
nebulizer
|
|
routes of administration
inh |
inhaler
|
|
routes of administration
supp |
suppository (rectum or vagina)
|
|
routes of administration
trans |
transdermal patch
|
|
oral products
tablets -what does it consist of |
drugs plus binding product (cornstarch)
|
|
oral products
enteric coated -where does it dissolve? they are employed for 2 purposes: |
coating that dissolves in the intestines
consist of drugs that have been coated with a material designed to dissolve in the intestine but not the stomach. they release their contents into the intestine, not stomach. 1) protect drugs from acid and pepsin in the stomach 2) protect the stomach from drugs that can cause gastric discomfort |
|
oral products
enteric coated -increased variability when: -dependent upon? |
-Increased variability on onset of response
-Dependent upon stomach emptying |
|
oral products
enteric coated -we have enteric coated products to reduce: |
the potential of stomach ulcer development
|
|
oral products
enteric coated think of it as an M&M -what does she mean by that |
candy coated outside is resistance to acid
-so you take the pill and it goes into the stomach but it doesn't do anything. it only dissolves in the intestine (alkaline enviornment) |
|
Oral agents – Sustained Release (extended release, controlled release, etc)
-what are they made up of? -tell me about their absorption? |
Small spheres that dissolve at different rates (capsule with nerds)
-capsules filled with tiny spheres that contain the actual drug; the spheres have coatings that dissolve at variable rates. Because some spheres dissolve more slowly than others, drug is released steadily throughout the day. The primary advantage is that they permit a reduction in the number of daily doses. -You can open nerd capsule, but you can’t crush the nerds.(can't crush them because you break the chemical coating which allows them to be SR) you can open the capsule and put them in applesauce variable |
|
Oral agents – Sustained Release (extended release, controlled release, etc)
you can't break apart or crush because if you did, the drug would: |
be available at once (most deadly is nitroglycerin and narcotics like oxycotin)
|
|
Sublingual
-where is it absorbed? -what is the advantage? -what happens with metabolism? |
•Absorbed through the oral mucosa
•Rapid absorption •Drug bypass’s the liver (works just as fast as an IV injection because of vascularity. it doesn't have to go through metabolism, it's 100% active under the blood stream. |
|
IM injections
“Depot” preparation means that the drugs |
absorb very slowly over an extended period of time
|
|
IM injections
Types of Depots... •DepoProvera - •Pen G Benzathine - •Lunelle - |
progesterone
penicillin for birth control |
|
Subcutaneous: is similar to IM, but has a (slower of faster) absorption rate than the IM injection
|
slower
|
|
Depot injections--- like yogurt.
Use larger needle (what size guage) its going to hurt them.. •They are released over a (short or large) period of time •what do they look like? |
20 guage or 18 guage)
larger They are usually cloudy or white |
|
Considerations in IV administration
-what should you look for: -evaluate for: -palpate: -listen to: |
-Look for swelling or erythemia
-Evaluate for blood return -Palpate around the site and surrounding area for tenderness and swelling -Listen to what you patient tells you. -Redness is phlebitis -Potassium burns in fluid |
|
What harm can an infiltrate do?
|
vascular compression ---no blood supply.
Third spacing and necrosis can happen. |
|
How do you fix infiltrate?
|
Heat.
Heat dilates. It takes 2-3 hours but it will get better. that allows circulation that can get blood to take fluid back in and you want to keep it warm. |
|
-Never push a drug in less than how long?
why? |
1 minute
Side affects can happen very fast |
|
When reconstituting your drug, make sure:
|
it is completely dissolved or you could cause an embolism make sure they are completely dissolved.
|
|
Distribution
-what is it? |
Transportation of the drug in the body by bodily fluids to its site of action (Transportation of drug in body to site of action)
|
|
Distribution
-what is it influenced by: |
circulation, your plasma protein which is albumin, and blood brain barrier (need a transporter)
|
|
Distribution
3 factors to consider: |
1. Blood flow
2. Exiting vascular system 3. Blood brain barrier |
|
Distribution
3 factors to consider -Exiting vascular system *drug must leave circulation: *in the capillary beds, the drugs pass between: |
to be metabolized
the cells and into the intersitial space (drugs pass through the pores in the capillary wall) |
|
Distribution
3 factors to consider: -Blood brain barrier *very selective in which drugs may pass through* therefore, the drugs must be __ or use a ___ |
lipid soluble or use a transport system
|
|
Distribution
3 factors to consider: -Blood brain barrier *barrier makes it difficult to treat what kind of problems: so if it is an infection, use drugs that are: |
cerebral
lipid soluble |
|
Pharmacokinetics
-Placental drug transfer: what passes through? |
whatever mom gets, baby gets.
Drugs that are lipid soluble and without a charge can pass through the placenta |
|
Pharmacokinetics
-Placental drug transfer: drugs have the potential to cause numerous problems: |
birth defects
mental retardation respiratory depression (narcs) cardiac rhythm changes |
|
Pregnancy Safety Categories
A, B, C, D, X adverse effects reported in animal fetus and information in humans is not available |
C
|
|
Pregnancy Safety Categories
A, B, C, D, X studies show no risk to the fetus |
A
|
|
Pregnancy Safety Categories
A, B, C, D, X possible fetal risk in humans reported |
D
|
|
Pregnancy Safety Categories
A, B, C, D, X considering potential benefit versus risk may warrant the use of these drugs in pregnant women |
D
|
|
Pregnancy Safety Categories
A, B, C, D, X studies indicate no risk to animal fetus and information in humans is not available |
B
|
|
Pregnancy Safety Categories
A, B, C, D, X fetal abnormalities reported and positive evidence of fetal risk in human is available from animal and human studies |
x
|
|
Pregnancy Safety Categories
A, B, C, D, X these drugs should not be used in pregnant women |
x
|
|
Pregnancy Safety Categories
A, B, C, D, X no potential of harm to fetus |
a
|
|
Pregnancy Safety Categories
A, B, C, D, X there's been animal testing, no human information but it's found to be safe for baby and infants |
b
|
|
Pregnancy Safety Categories
A, B, C, D, X don't give if yo don't have to |
c d x
|
|
Pregnancy Safety Categories
A, B, C, D, X 100% contraindicated in pregnant women unless the women is drying and the only way to save her life is this drug. we will risk the fetus to save moms life. |
x
|
|
Pregnancy Safety Categories
A, B, C, D, X wight the risk vs benefit. where is the fetus in development and where is the mom in pregnancy |
c and d
|
|
protein binding --think _______
|
elderly because they don't eat properly
|
|
what is the most abundant protein in the body
|
plasma albumin
|
|
tell me about protein
-small or large molecule? -what can't it do? |
large
cannot pass out of the circulatory system |
|
protein binding can cause restriction of drug distribution. because albumin is too large to leave the bloodstream, drugs bound to albumin cannot leave either
drugs attached to protein are called: |
bound
|
|
because albumin has few binding sites, there is significant competition for binding sites. what can this cause:
|
decrease drug concentration and increase possibility for adverse reactions and toxicity (one drug can displace another from albumin causing the free conentration of the displaced drug to rise . by increasing levels of free drug, competition for binding can increase the intensitiy of drug responses and toxicity can result
|
|
what is biotransformation
|
enzymatic change in a drugs chemical structure
|
|
What is the primary site of metabolism in the human body?
|
liver
|
|
what is Cytochrome P450
what does the metabolism? |
highly utilizated enzymatic system that is used to metabolize certain drugs
enzymes |
|
what is the most important secondary action of metabolism?
|
the drugs conversion to a format that the kidney can excrete
|
|
the most important consequence of drug metabolism is the promotion of:
|
renal drug excretion
(the kidney which is the major organ of drug excretion, is unable to excrete drugs trhat are highly lipid soluble. so you have to convert lipid soluble drugs into more polar (less lipid soluble) compounds to make it possible for the kidney to excrete many drugs |
|
consequences of drug metabolism
inactivation of medication |
drug metabolism can converty active compounds into inactive forms
|
|
consequences of drug metabolism
increase therapeutic action |
metabolism can increase the effectiveness of some drugs.
|
|
consequences of drug metabolism
activation of prodrugs into active forms -what is a prodrug |
a prodrug is a compound that is inactive as administered and then undergoes conversion to its active form within the body
|
|
consequences of drug metabolism
-decrease toxicity when active forms are converted to inactive forms -increase toxicity when inactive forms are converted to active forms we have higher toxicity when ___ occurs whats an example |
inactivation
tylenol. when you take it, it is inactivated but when the kidney metabolizes it, it metabolizes to whats known as an active metabolite (chemical) that chemical kills and harms liver cells |