pharma treatment of pain Flashcards

1
Q

what is mech and use of acetpminophen

A
  • indirect inhib of COX in brain
  • excellent anti-pyretic
  • some hepatotoxicity
  • careful in alcoholics and elderly
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2
Q

what is dose equivalent for NSAIDs

A

2-3/10 for chonic, can be 10 for acute

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3
Q

what are different types of NSAIDs

A

6 combos of

  1. high/low potency
  2. fast/intermed./slow elim
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4
Q

what are 2 types of muscle relaxants and which should be used

A
  1. anti-spamodics - yes
    non-benzo and benzo - use the non
  2. antispacticity - don’t use
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5
Q

how do anti-dep work

A

S and N are pain inhibiting in the dorsal horn

- SNRI are best

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6
Q

main indications for anti-deps

A

neuropathic pain

  • duloxetine for fibro and low back
  • trazadone (TCA) - for sleep
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7
Q

conta-indications for anti-deps

A
  • glaucoma
  • BPH
  • prolonged QT
  • liver impariment
    for duloxetine , CrCl
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8
Q

mech of anti-convusants

A
  • both epilepsy and neuropathic pain are abnormal firing

- volagte gated Na chanel blockers

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9
Q

what are uses of anti-convulsant

A

neuropathic pain

  • gabapentin - mod. reduction
  • pregabalin - same risk benefit, but more expensive
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10
Q

2 weak opiods

A
  1. codeine

2. tramadol

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11
Q

strong opiods

A
  • morphine
  • hydromorphone
  • oxycodone
  • methadone
  • buprenophone
  • tapentadol
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12
Q

2 natural opiods

A

codeine

morphine

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13
Q

5 things that must be done before prescribing opiods

A
  1. pain diagnosis
  2. goal setting
  3. assess risk of OD
  4. assess risk of habit formation
  5. involve patient in decision
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14
Q

3 parts of optimal dose

A
  1. effectiveness- improved function
  2. plateauing - more doesn’t help much
  3. adverse effects
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15
Q

5 issues in monitoring

A
  1. watch for abberant use
  2. switch opiod when necc
  3. driving safety
  4. collborative care
  5. special pops
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16
Q

when to stop opiods

A
  • resolved
  • risk worse than benefit
  • complications
  • not working
17
Q

how to stop

A
  • taper
18
Q

withdrawal

A
  • not life threatening

- very unpleasant

19
Q

issues with canabanoids

A
  • wide range of doses
  • adverse effects at higher doses
  • no tolerance
  • sleep and mood improved
  • trials not great
20
Q

4 types of cannabanoids

A
  1. cannabis
  2. nabilone
  3. nabixamols
  4. dronabinol - discontinued
21
Q

indications for cannabis

A

no formal approval for pain

22
Q

indications for nabilone

A

severe N/V post chemo

23
Q

indications for nabiximols

A

spacticity in MS

24
Q

3 issues in choosing the right analgesic

A
  1. type of pain
  2. severity and patterns of pain
  3. pain chars
25
Q

3 steps on WHO analgesic ladder

A
  1. non-opiod
  2. opiod for mild/mod pain
  3. stronger opiods
26
Q

what to do for neuropathic pain

A

start CPS algorithm

27
Q

what to do for nociceptic pain

A

start WHO ladder