Quiz 3 Flashcards
Mu 1 receptor effects
euphoria, supraspinal analgesia, confusion, dizziness, nausea, low addiction potential
Mu 2 receptor effects
respiratory depression, CV and GI effects, miosis, urinary retention
delta receptor effects
spinal analgesia, CV depression, decreased brain and myocardial oxygen demand
kappa receptor effects
spinal analgesia, dysphoria, psychomimetic effects, feed-back inhibition of endorphin system
Describe morphine 3
INACTIVE metabolite of morphine- may accumulate and cause seizures
Describe morphine 6
ACTIVE metabolite of morphine- can cause ventilatory depression more potent than morphine
Does dilaudid have active metabolites?
no
Does demerol have an active metabolite?
yes- normeperidine (not good for elderly patients- lowers seizure threshold, produces CNS stim)
Does alfentanil have metabolites?
no
Demerol is an agonist to what receptor
mu
Sufentail is an agonist to what receptor?
mu
What do opioid agonist-antagonists bind to?
mu, kappa, and delta receptors
What are the advantages of opioid agonist-antagonists?
produce analgesia with limited depression of ventilation and low dependence potential
describe Nalbuphine (Nubain)
opioid agonist-antagonist that is chemically related to oxymorphone and narcan- equally as potent as morhpine
Where is Nalbuphine most used?
obstetrics
describe Butorphanol (Stadol)
opioid agonist-antagonist; agonist effects 20x more than pentazocine and antagonist actions 10-30x pentazocine
Describe Narcan
opioid antagonist- used to treat opioid induced depression, overdose, detect physical dependence
Describe how you should give Narcan
should be carefully titrated 20-40 mcg IV to avoid produceing severe pain (sudden antagonism of opioid can cause HTN, tachycardia, dysrhythmias, pulmonary edema)
What is the duration of action of Narcan?
1-4 hours
Name opioid agonists
morphine, demerol, fentanyl (and others), codeine, dilaudid, oxy, methadone, heroin, tramadol
Name agonists-antagonists
pentazocine, butorphanol, nalbuphine, buprenorphine, nalorphine, bremazocine, dezocine, meptazinol
Name opioid antagonists
naloxone, naltrexone, nalmefene
List the opioids from least to most potent
Demerol < morphine < alfentanil < fentanyl < remifentanil < sufentanil
Potency of demerol compared to morphine
1/10