• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/59

Click to flip

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;

59 Cards in this Set

  • Front
  • Back
4 basic types of nociceptors
1)heat response
2)cold response
2)acid response
3)pressure response
Chemical mediators of pain in tissues (3)
1)PG
2)K+/H+
3)prostanoids
Chemical mediators of pain in plasma
bradykinin
Chemical mediators of pain in nerve terminals (3)
1)substance P
2)CGRP
3)glutamate
Opoid receptor subtypes (4)
1)mu (MOP)
2)delta (DOP)
3)kappa (KOP)
4)ORL1 (NOP)
Mu agonists
enkephalin
Delta agonists (2)
1)enkephalin
2)endorphin
kappa agonists
dynorphin
ORL1/NOP agonists (2)
1)orphanin FQ
2)nociceptin
Mu receptor agents (3)
1)morphine
2)fentanyl
3)oxycodone
Kappa receptor agents (3)
1)butorphanol
2)levorphanol
3)pentazocine
Descending pain pathway is always off b/c of...
GABA
Opioid analgesics mechanism (4)
1)directly inhibit release of NTs that activate ascending pain pathways
2)inhibit release of NTs that inhibit descending pain pathway
3)activate descending analgesic pathways (promoting release of opioid peptides)
4)stimulate descending inhibitory pathways (5-HT, NE)
DXM properties (3)
1)little addictive potential
2)less constipating than codeine***
3)NMDA receptor antagonist
Anti-diarrheal effects of opioids (4)
1)incr tone
2)decr gut motility
3)stim mu2/delta receptors in brain and GI nerve plexus
4)loperamide crosses BBB poorly
Diphenoxylate
a)____ analog
b)_____ prevents abuse
a)meperidine
b)anticholinergic SE's
Opioids can also be used for...(2)
1)dyspnea of acute pulmonary edema
2)anesthesia
Dyspnea of acute pulmonary edema def (2)
1)associated w/ MI
2)labored/difficult breathing associated w/ pain
....(3) used as regional anesthetics b/c....
1)morphine, fentanyl, lidocaine
2)produce spinal analgesia
a)Nociception vs.
b)Hyperalgesia vs.
c)Allodynia
a)normal response to noxious stimulus
b)enhanced response to a noxious stimulus
c)when a non-noxious stimulus is perceived as noxious
Acute pain desc. (5)
1)pain following an injury, stops when treated
2)important for survival
3)pt knows pain will end @ some point
4)clinical assessment correlates well w/ pt self-reporting
5)important to prevent it from becoming chronic pain
Chronic pain characteristics (4)
1)lasts for more than several weeks (episodic or continuous)
2)no survival benefit
3)more pronounced psychological harm
4)poor correlation b/w clinical assessment and pt assessment
Plant that morpheine/codeine comes from and it is...
papaver somniferum

gold standard for pain relief since 3rd century BC
Morphine metabolized in liver to: and characteristics of them (2)
1)morphine-6-glucuronide, active 100-800x more potent than morphine
2)morphine-3-glucuronide, no analgesia, may cause tremors
Codeine is metabolized to...(2)
1)5-10% to morphine-6G
2)80% to codeine-6G
Genetic variability w/ codeine (3)
a)coversion to morphine via CYP2D6
b)10% of whites don't have this so codeine is ineffective
c)chinese have lower CYP2D6 and produce less morphine-6G
2 main ways to block pain
1)block glutamate receptor
2)activate descending pain inhibitory tracts
Semisynthetic opioids (3)
1)hydrocodone
2)oxymorphone
3)oxycodone
Oxycodone (Oxycontin) (4)
1)mu agonist
2)8x more potent than codeine
3)active metabolites, but less potent
4)treat acute pain >> than chronic
Methadone (dolophine) (5)
1)mu agonist
2)effective orally w/ long half-life (so long time to SS)
3)less sedation than morphine
4)higher doses for addiction than pain
5)racemic mixtures activate mu and antagonize NMDA
Methadone cautions (2) and interactions (3)
1)will accumulate to toxic levels if dosed too freq.
2)may prolong Q-T

1/2)rifampin and phenytoin incr metabolism
3)cimetidine inhibits metabolism
Meperidine (demerol) (5)
1)normepiridine is antimuscarinic
2)don't use for more than 48hrs w/ doses >600mg/day
3)no antitussive
4)less constipation, spasm, retention than morphine
5)mu agonist
Normeperidine properties (3)
1)half as efficacious as meperidine w/ 2x greater half-life
2)decreases seizure threshold
3)increases CNS excitability
Pentazocine
a)receptor
b)other (4)
a)weak mu agonist/antagonist, kappa agonist

b1)can precipitate withdrawal
b2)w/ naloxone to prevent euphoria
b3)can't reverse MS respiratory depression
b4)no active metabolites
Pentazocine
a)use
b)SE's (3)
c)avoid use in...
a)pt w/ chronic pain or w/ former opioid addicts
b)less urinary retention, constipation, dysphoria @ high doses
c)CAD
Butorphanol
a)receptor
b)other (2)
a)mu ANTAgonist, kappa agonist
b1)ceiling effect on respiratory depression
b2)good for acute pain
Butorphanol
a)approved for...
b)SE's (2)
1)severe HA, post-labor, surgery
2)CV effects like pentazocine, sedation
Nalbuphine (Nubain)
a)receptor
b)other (3)
a)mu ANTAgonist, kappa agonist
b1)less dysphoria than pentazocine
b2)no CV effects (so good for MI)
b3)abstinence syndrome
Dysphoria
a)cause
a)kappa receptor agonists
Respiratory depression
a)cause
b)other (3)
a)mu2 agonist in brain
b1)primary cause of death
b2)dose dependent
b3)tolerance develops
Miosis
a)cause
b)other (3)
a)mu/kappa agonists
b1)dose dependent
b2)NO TOLERANCE DEVELOPS
b3)GOOD INDICATOR OF OPIOID O.D. IF pt unconscious
Constipation
a)cause
b)other (2)
a)mu2/delta receptors in brain and GI nerve plexus
b1)little/no tolerance
b2)initiate laxatives early
Sensitivity rxns
a)cause
b)other (2)
a)wheals @ site of injexn due to histamine
b1)urticaria, rashes
b2)anaphylaxis RARE
Biliary Tract
a)what happens
b)prevented by...
c)reversed by...
a)incr tone in sphincter of Oddi
b)atropine
c)opioid antagonists
GU effects (2)
1)decr renal fxn by decr renal blood flow
2)urinary retention
Use of agonists w/ agonist/antagonist can lead to.... (2)
1)diminished analgesia
2)precipitated withdrawal
Use of opioids in pregnancy (2)
1)fetus may become dependent
2)manifest withdrawal after delivery
Use of opioids in pts w/ endocrine disease
1)pts w/ addison's or myxedema may be more sensitivie
Use of opioids in pts w/ impaired pulmonary fxn =
acute respiratory failure
Use morphine w/ care in asthmatics b/c...
it may induce histamine release (fentanyl doesn't release histamine)
Acute overdose of opioids characterized by... (4)
1)coma
2)pinpoint pupils
3)respiratory depression
4)maybe needle marks
Pure opioids antagonist...
naloxone
Naloxone (Narcan)
a)affinities
b)treat...
c)induces
a)mu > kappa1 > delta > kappa3
b)acute opioid overdose
c)abstinence syndrome
Naltrexone (Revia)
a)affinities
b)adv over Naloxone
c)treat...
a)mu > kappa1 > delta > kappa3
b)longer half-life
c)chronic alcoholism/opioid addiction NOT overdose
____ is not used for opioid induced constipation
NO BULK LAXATIVES
If you are switching opioids you must...
make sure you are switching from mu agonist to mu agonist...etc.
Thermoregulation def. (3)
1)maintain normal body temp.
2)set pt is normal body temp (97-99F)
3)diurnal temp variations in set pt (lowest in morn, peak in late afternoon/early evening)
Temp. regualtion center
hypothalamus
Thermoreceptors
a)where
b)fxn
a)thruout body
b)transmit temp changes to hypothalamus so it can thermoregulate properly