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29 Cards in this Set

  • Front
  • Back
Inhibit synaptic activity of primary afferents and spinal cord pain transmission neurons
Ascending pathways
Activation of these receptors close Ca2+ ion channels to inhibit neurotransmitter release
Presynaptic mu, delta, and kappa receptors
Activation of these receptors open K+ ion channels to cause membrane hyperpolarization
Postsynaptic Mu receptors
Tolerance to all effects of opioid agonists can develop except to
Miosis and constipation
All opioids except this agent (which has a muscarinic blocking action) cause pupillary constriction
Meperidine
SE of all opioid analgesics
dependence, withdrawal syndrome, sedation, euphoria, respiratory depression nausea and vomiting, constipation, biliary spasm, increased ureteral and bladder tone, and reduction in uterine tone (hyperparasympathetic tone)
Strong opioid agonists
Morphine, methadone, meperidine, fentanyl, levorphanol, and heroin
Opioids used in anesthesia
Morphine and fentanyl
Opioid agonist used in the management of withdrawal states because of its long duration of action
Methadone
Opioid available trans-dermally
Fentanyl
Opioid that can be given PO, by epidural, and IV, which helps to relieve the dyspnea of pulmonary edema
Morphine
Use of this opioid with MAOI can lead to hyperpyrexic coma, and with SSRI's can lead to serotonin syndrome
Meperidine
Moderate opioid agonists
Codeine, hydrocodone, and oxycodone
Weak opioid agonist, poor analgesic, its overdose can cause severe toxicity including respiratory depression, circulatory collapse, pulmonary edema, and seizures
Propoxyphene
Mixed opioid agonist-antagonist, considered a strong analgesic, has a long duration of action and is resistant to naloxone reversal
Buprenorphine
Opioid antagonist that is given IV for overdose and has short DOA
Naloxone
Opioid antagonist that is given orally in alcohol dependency programs
Naltrexone
These agents are used as antitussive
Dextromethorphan, Codeine
These agents are used as antidiarrheal
Diphenoxylate, Loperamide
ingestion of EtOH w/ these opioids causes a major increase in plasma drug levels
hydromorphine, oxymorphine
opioid whos metabolite can cause seizures at high plasma levels
meperidine
opioid receptor responsible for respiratory depression effects
mu
opiod receptor involved in sedaitive actions
kappa
opiod analgesics are relatively contraindicated:
head injuries, pregnancy?
opiod action on biliary tract, ureteral and bladder sphincters, and uterus (except w/meperidine)
increases biliary contraction, increases ureteral and bladder shincter tone, and decreases uterine tone
describe the opioid abstinence syndrome seen with abrupt withdral after physical dependance
rhinorrhea, lacrimation, chills, goosebumps, muscle aches, diarrhea, yawning, anxiety, hostility
over-the-counter antitussive w/toxicities including hallucinations, confusion, excitation, nystagmus, seizures, coma, decreased respiration
dextromethorphan (robotussin, ect.)
opioid overdose 'triad'
pupillary constriction, comatose, respiratory depression
opioid agonists
naloxone, nalmefene, naltrexone