medical conditions exam 1 Flashcards
what is a PT’s job in relation to drugs
we can’t prescribe or administer in general, we can only administer for modality use like iontophoresis and phonophoresis
what type of drug is aspirin
anti-platelet
if a patient says they are having a lot of inflammation, can you recommend the use of an NSAID
NO. but you can educate them on different types of OTCs so they can make the best choice but we can’t recommend use of drugs
are drugs removed from the body as active or inactive
can be either one depending on the type of drug and how the body responds
example of ace inhibitor
lisionopril
example of calcium channel blocker
norvasc
what do PTs use drug screenings for
precautions and contraindications for PT intervention
what does the FDA do
direct drug development, give approval for drug marketing, approve new use for older drugs, monitor use of existing drugs, determine if drugs are safe for humans and if they are effective
why are some drugs banned in the US but able to get in other countries
FDA determines if they are safe, most other countries just care if they are effective
what determines if a drug is rx or OTC
OTC have higher theraputic index so side effects are less
give examples of classifications of drugs
traditional vs generic, biologic vs biosimilar
what type of drug must be bioequivalent to the original
generic
what does bioequivalent mean
same dose, strength, ingredients and has the same effect in the blood
which type of drug can be analyzed for its components
traditional
what type of drug comes from living systems like yeast, plants, animals and can’t be replicated
biologic
what kind of drugs aren’t identical to the original but are usually at a lower cost, but we don’t know how therapeutic they are
biosimilar
what are examples of natural alternative therapies
minerals, fish oil, vitamins, etc
what does integrative medicine focus on
health vs disease
how many stages in drug testing does the FDA have and what is stage 4
4 stages, when they continue monitoring for adverse effects even after it’s approved
4 steps in pharmacotheraputics
AADME
what are some things drugs may be used for
maintenance, treatment, replacement, prevention
chemical name drug
long and complicated name, specific compound and structure
generic name
official name usually used in journals
trade name
copyrighted name, assigned by the drug company
how many schedules of drugs are there based on the comprehensive drug abuse prevention and control act
5
what schedule is marijuana in
used to be 1, but now it’s 3
what schedule are cocaine, morphine and adderall in
1
what schedule is testosterone in
3
what schedule are xanax, valium in
4
what schedule is robitussin in
5
risk factors for THC
stroke, fall, MI
what trimester should a pregnant woman make sure she does not consume drugs in
1st trimester
def dose
amt drug reach target site
def potency
amt needed to produce effect
def low dose
no observable effect b/c dose is too low
ceiling effect
dose is high so there is no increase in the response
which type of drug is immunogenic
biological, NOT chemical
which type of drug is stable and has a well-defined structure
chemical
what are some pros and cons of biologics
very expensive but better for the body and can be very specific in what they target
what is the most important thing for us as PTs to know about drugs out patients are taking
why they are taking the drug
what does bioavailability depend on
administrative route and ability to cross membrane barriers
2 types of drug administration
enteric and parenteral
enteric is also known as
alimentary (through GI)
what step of pharmokinetics determines bioavailability
absorption
what is drug absorption affected by
dosage, solubility, blood flow, acidity, concentration, diffusion
what is distribution of drugs affected by
blood flow, plasma protein, binding, anatomic blood barrier
what stage of pharmacokinetics includes the liver breaking it down
metabolism
what happens in the metabolism stage
liver changes drug to inactive form which also impacts how quickly it is excreted from the body
what organ is involved with elimination stage
kidney
what stage of pharmacokinetics is related to clearance or half life
excretion
what methods of taking drugs are parental
sublingual/buccal, IV, IM
what is a disadvantage about rectal administration and PEG tube
unpredictable where the drug will go in the body
example of drug administered via sublingual or buccal
nitroglycerine
what type of drug administration is 100% bioavailable
IV and IA
what type of administration are phonophoresis and iontophoresis
transdermal
what is intrathecal baclofen therapy
uses baclofen to decrease abnormal tone and deliver drug into CSF to manage severe spasticity
volume of distribution
ratio of drug administered to the concentration of drug in plasma
where are most drugs stored in the body
adipose tissue b/c lipid soluble
what are prodrugs
required to be active, liver breaks it down to create a stronger response
what should you not take if you are taking tetracycline
antacid b/c decreases antibiotic effects
risk of long term NSAID use
stomach ulcer, high BP, increase risk of heart attack
def drug selectivity
how the drug knows where to go
def affinity
attraction b/w drug and receptor
clearance (CL)
volume plasma cleared per unit time, predicts elimination in relation to blood serum concentration
what effect of drugs tells us when the next dose should be taken
clearance
what does half life ensure
maximum dose is administered at each time
what does a higher half life mean
longer time it takes for the drug to leave the system
what does a lower half life mean
the dose needs to be taken more often b/c doesn’t stay in the body for as long
does chemo have a high or low therapeutic index
low b/c it is very dangerous
how many of the most prescribed drugs that are prescribed for Americans are for hypertension
6/15
what are some conditions that have very costly drugs associated with them
diabetes, hep C, cholesterol
what are some of the most commonly prescribed drugs in the US
asthma, diabetes, cholesterol, GERD
vyvanse
ADHD
lyrica
seizure
lantus
DM
ventolin
COPD
crestor
cholesterol
advair
COPD
spiriva
COPD
januvia
DM
2018 GA prescription drug monitoring program
requires MDs to check database before rx opioids or cocaine
are analgesics an opioid
yes they are
do analgesics relive pain
no, they just alter the perception of pain
examples of non-opiods
NSAID, anti-inflammatory, glucocorticoids
examples of opiods
codeine, morphine, fetanyl, hydrocodone, heroin
what are some effects of opioids
sedation, mood change, constipation, depression, orthostatic hypotension
what does a PCA do
allows pt to control amount of opioid given to them via pump, shown to decrease addiction rates and side effects b/c constant supply instead of running out and asking for more
what is a benefit of cox 1 and 2 drugs
causes less GI upset
functions of acetaminophen
analgesic and antipyretic NOT anti-inflammatory