analgesics Flashcards
muscul/o, my/o, myos/o
bone
fasci/o
fascia
ten/o, tend/o, tendin/o
tendons
oss/e, oss/i, oste/o, ost/o
bone
myel/o
bone marrow
chondr/o
cartilage
arthr/o
joints
ligament/o
ligaments
synovi/o, synov/o
synovial membrane, synovial fluid
burs/o
bursa
NSAID drugs
all OTC, Aspirin, diclofenac, etodolac, ibuprofen, indomethacin, meloxicam, nabumetone, naproxen, ketorolac
NSAIDs MOA
Inhibition of cyclooxygenase (COX) enzymes 1 and 2 reduction in prostaglandin precursors associated with inflammation and pain
Anti-inflammatory and anti-pyretic
NSAIDs indications
Mild to moderate pain, inflammation, and fever
NSAIDs adverse effects
** gastrointestinal, cardiovasculat*** renal reye’s syndrome
NSAIDs interactions
Anti-hypertensive agents
Diuretics
Anticoagulants
NSAIDs counseling
Make aware of signs and symptoms of GI bleeding
Aspirin individual characteristics
Also indicated for prevention and treatment of MI and acute ischemic stroke/TIA
Other NSAIDs may diminish cardioprotective effects
Indomethacin, Ibuprofen individual characteristics
Also utilized for patent ductus arteriosus in infants
Maximum daily dose IBU – 1200 mg to 3200 mg
Ketorolac (IV, IM, PO) individual characteristics
Dose adjustment required for geriatric, renal insufficiency, low body weight
Maximum daily dose
Maximum duration of treatment is 5 days
Selective COX-2 Inhibitors drugs
Celecoxib
Celecoxib indications
osteoarthritis, rheumatoid arthritis
Celecoxib lower risk?
gastrointestinal adverse effects
Celecoxib class
Selective COX-2 Inhibitors
Acetaminophen MOA
Inhibits CNS prostaglandin synthesis
Acetaminophen indications
Mild pain
Severe pain in combination
Fever
Acetaminophen adverse effects
Hepatotoxicity
Acetaminophen dosing
Usual dose: 500-650 mg PO Q 4-6H prn
Children: 10-15 mg/kg PO Q 4-6H prn
Acetaminophen max daily dose
Maximum daily dose: 3 grams
Hepatic dosage adjustment: limit to 2 grams/day
Acetaminophen BB warning
Hepatotoxicity
Acetaminophen contraindications
Hypersensitivity
Severe hepatic impairment/Severe active liver disease
Acetaminophen interactions
Concomitant hepatotoxins
Ethanol
Acetaminophen counseling
Maximum daily dose
Warn against inadvertent overdose
Report unresolved pain or fevers
Butalbital/Caffeine/APAP drugs
Fioricet
Fioricet MOA
Butalbital – barbiturate – sensory cortex and motor activity depression, sedation/drowsiness
Caffeine – increase in cAMP, vasoconstriction, CNS stimulation
Fioricet indications
headache
Fioricet dosing
50 mg butalbital/40 mg caffeine/325-750 mg APAP
1-2 tabs/caps (15-30 mL soln) Q4H prn
Fioricet adverse effects
Nausea
CNS depression, drowsiness, depression, respiratory depression,nervousness, insomnia, nightmares, hallucinations, tachycardia
Hepatotoxicity
Fioricet interactions
CNS depressants
Alcohol
Fioricet counseling
Contains APAP, avoid inadvertent overdose
Tramadol MOA
Opioid receptor agonist
Inhibits reuptake of serotonin and norepinephrine
Tramadol indications
moderate to severe pain
Tramadol max daily dose
Maximum daily dose 400 mg (300 mg extended-release products)
Tramadol adverse effects
Nausea, vomiting, constipation
Sedation, somnolence, dizziness, euphoria, dysphoria
Hypotension, seizures, abstinence syndrome with abrupt discontinuation
Tramadol interactions
CNS depressants
Antidepressants may increase risk of seizures and serotonin syndrome
Tramadol counseling
May cause drowsiness
Abrupt discontinuation may result in withdrawal symptoms
CSA Act of 1970 as Amended
Comprehensive Drug Abuse Prevention and Control Act (Controlled Substances Act [CSA]) of 1970 as amended
Replaced Harrison Narcotics Act of 1914
Established the Drug Enforcement Agency (DEA) with enforcement powers
Defined 5 Schedules of controlled substances
Schedule I
The drug or other substance has a high potential for abuse.
The drug or other substance has no currently accepted medical use in treatment in the United States.
There is a lack of accepted safety for use of the drug or other substance under medical supervision.
Examples of Schedule I substances include heroin, lysergic acid diethylamide (LSD), marijuana, and methaqualone
Schedule II
The drug or other substance has a high potential for abuse.
The drug or other substance has a currently accepted medical use in treatment in the United States or a currently accepted medical use with severe restrictions.
Abuse of the drug or other substance may lead to severe psychological or physical dependence.
Examples of Schedule II substances include morphine, phencyclidine (PCP), cocaine, methadone, and methamphetamine
Schedule III
The drug or other substance has less potential for abuse than the drugs or other substances in schedule II.
The drug or other substance has a currently accepted medical use in treatment in the United States.
Abuse of the drug or other substance may lead to moderate or low physical dependence or high psychological dependence.
Anabolic steroids, codeine and hydrocodone with aspirin or Tylenol®, and some barbiturates are examples of Schedule III substances.
Schedule IV
The drug or other substance has a low potential for abuse relative to the drugs or other substances in Schedule III.
The drug or other substance has a currently accepted medical use in treatment in the United States.
Abuse of the drug or other substance may lead to limited physical dependence or psychological dependence relative to the drugs or other substances in Schedule III.
Examples of drugs included in schedule IV are Darvon®, Talwin®, Equanil®, Valium®, and Xanax
Schedule V
The drug or other substance has a low potential for abuse relative to the drugs or other substances in Schedule IV.
The drug or other substance has a currently accepted medical use in treatment in the United States.
Abuse of the drug or other substances may lead to limited physical dependence or psychological dependence relative to the drugs or other substances in Schedule IV.
Cough medicines with codeine are examples of Schedule V drugs.
Narcotics facts and exaples
Opioids
Variety of different routes of administration and formulations
Fentanyl, hydromorphone, methadone, morphine, oxycodone
Narcotics MOA
µ opioid receptor agonist activity alteration in perception and response to pain centrally and peripherally
Narcotics indications
Moderate pain, severe pain
Narcotics dosing
Titrate to response
Narcotics adverse effects
Rash, pruritis Gastrointestinal Nausea, vomiting Constipation CNS depression Sedation , dizziness Respiratory depression
Narcotics BB warnings **
High potential for abuse, misuse, and diversion
May cause potentially life-threatening hypoventilation, respiratory depression, and/or death
Narcotics contraindications
Paralytic ileus
Narcotics interactions
CNS depressants
Alcohol
Narcotics counseling
May cause constipation requiring laxatives
May cause drowsiness and impair your ability to operate machinery
Avoid alcohol use
May cause physical or psychological dependence with prolonged use
After prolonged use, abrupt discontinuation may result in abstinence syndrome
A new prescription is required for all C-II refills
Morphine dosage forms
immediate and sustained-release tablets, injection, oral solution, suppositories
Morphine counseling
do not crush or chew the controlled-release products
Oxycodone dosage forms
capsules, oral liquid, oral concentrate, immediate and controlled-release tablets
Oxycodone counseling
do not crush or chew the controlled-release products
Oxycodone adverse effects
Deaths due to overdose have been reported due to misuse/abuse after crushing the sustained-release tablets
Fentanyl dosage forms
transdermal patch, buccal tablets, film, lozenges, injection
Fentanyl adverse effects
Transdermal patch – skin rash
Fentanyl counseling
Transdermal patch – rotate application site to reduce skin irritation, may take up to 12 hours for onset of effect, never cut patches, discard properly
Hydromorphone dosage forms
Dosage forms: oral liquid, immediate-release tablets, injection, suppository
Methadone indications
Pain – multiple daily doses
Addiction – single daily dose
Narcotic/Non-narcotic Combinations
Introduction:
Commonly combined with APAP or ibuprofen as coanalgesics
Codeine/APAP, hydrocodone/APAP, hydrocodone/IBU, oxycodone/APAP
Indications: moderate pain
Codeine/APAP
Also used for cough
C-III
Hydrocodone/APAP
Dosage forms: tablets, elixir, solution
C-III
Hydrocodone/IBU
Dosage forms: tablets
C-III
Oxycodone/APAP
Dosage forms: capsules, tablets, oral liquid
Indicated for moderate or severe pain
C-II