Chapter 26 Flashcards

1
Q

A fibers

A

large diameter nerve fibers that carry peripherial impulses associated with temp and touch to spinal cord
*do not transmit pain
*backrubs stimulate

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2
Q

A delta fibers

A

Small Myelinated nerve fibers that carry peripheral impulses associated with pain to the spinal cord
*Respond quickly to acute pain

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3
Q

C fibers

A

Unmyelinated slow conducting fibers that carry peripheral impulses associated with pain to the spinal cord

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4
Q

Ergot derivative

A

drug that causes vascular constriction in the brain & periphery, relieves or prevents migraine headaches but is associated with many adverse effects

*reduce hyperperfuson and basilar artery vascular bed

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5
Q

Gate control theory

A

transmission of a nerve impulse can be modulated at various points along its path by descending fibers from the brain that close the gate and block transmission of pain information

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6
Q

MIgraine headache

A

headache charaterized by server, unilateral, pulsating head pain associated with systemic effects, GI upset, sensitivity to light & sound

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7
Q

Opioids

A

drugs derived from opium that react iwth specific opioid receptors throughout body

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8
Q

opioid agonists

A

drug that react at opioid receptor sites to cause analgesia, sedation or euphoria
*controlled substances

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9
Q

opioid agonist-antagonists

A

drugs stimulate or block the activity of certain opioid receptors
*less abuse potential but similar analgesic effect

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10
Q

opioid antagonist

A

drugs that block opioid receptor sites
*used to counteract the effects or treat overdose

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11
Q

opioid receptors

A

receptor sites that react to naturally occurring peptides, endorphins and enkephalins, which are receptive to opioid drugs
*found in CNS, nerves n periphery, cells in GI tract

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12
Q

Pain

A

sensory and emotional experience associated with actual or potential tissue damage

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13
Q

spinothalamic tract

A

nerve pathway from the spine to the thalamus along with pain impulses are carried to the brain

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14
Q

triptan

A

Selective serotonin receptor blocker that causes a vascular constriction of cranial vessels, used to treat acute migraine attacks

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15
Q

What are the 2 agents that can change perception and tolerance of pain?

A

Opioids & opioid antagonists
anti-inflammatory agents

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16
Q

Pain can be further classified by an originating source, such as

A

nociceptive - direct stimulus to pain recpto
neuropathic - caused by nerve injury
psychogenic - associ w/ emotional, psychological, behavioral

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17
Q

What do opioid receptors in the brainstem and spinal cord/thalamus do?

A

**In brainstem -control BP, pupil diameter, GI secretions, chemoreceptor trigger zone
***in spinal cord and thalamus - integrate and relate incoming info about pain

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18
Q

Endorphins are released during _____ to block the sensation of?

A

Stress
Pain

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19
Q

What are some non-pharmacological methods to treat pain?

A

warmth
massage
positioning
acupuncture
meditation

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20
Q

What are the 2 opioid recptors and what do they do?

A

mu (m) - pain blocking -respiratory depression, euphoria, decreased GI activity, pupil constriction, physical dependence

kappa (k) - some analgesia, pupillary constriction, sedation, dysphoria

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21
Q

What are the opioids that have an established pediatric dose?

A

codeine, fentanyl (not transdermal), hydrocodone, meperidine, morphine

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22
Q

What opioids are not recommended for children?

A

levorphanol, oxymorphone, oxycodone, methadone

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23
Q

Child <13 yrs requires a opioid-agnost-antagonist, what is used?

A

buprenorphine

24
Q

What is the drug of choice in children for reversal of opioid effects and overdosE?

A

Naloxone

25
Q

What are the analgesics used during labor

A

morphine, meperidine, oxymorhone

26
Q

WHat drugs are opioid agonists

A

Alfentanil hydrocodone
Codeine
Fentanyl
hydrocodone
hydromorphone
levorphanol
Meperidine
Methadone
morphine
opium
oxycodone
oxymorphone
remifentanil
sufentanil
tapentadol
tramadol

27
Q

What are the therapeutic actions for opioid agonists?

A

Act on specific opioid receptor sites in CNS to produce analgesia, sedation, and sense of well being
*also as antitussives

28
Q

What are the pharmacokinetics for opioids

A

IV - most reliable
IM and Subcut - varying rates of absoprtion/absoprtion slower in females

Hepatic metabolism, excreted in urine and bile

half life vary

Cross placenta

29
Q

What are the contraindications for opioid agonists

A

Allergy
diarrhea caused by toxic poisons
after biliary surgery or surgical anastomoses

CAUTION
Respiratory dysfunction
GI surgery
ulcerative colitis
head injuries, alcoholism, TD’s
Renal/liver dysfunction

30
Q

What is the pregnancy category for opioid agonists

A

Oxycodone category B
All others C

31
Q

What are the adverse effects of opioid agonists?

A

Respiratory depression, cardiac arrests, shock
Orthostatic hypotensions
GI effects, nausea, vomit, constipation
Lightheaded, dizziness, anxiety dear

32
Q

What are opioid agonists drug to drug interactions?

A

Barbiturate or MAOI - increased respiratory depression, hypotension, sedation or coma

**Tapentadol - avoid - SSRI, MAOT, TCA and st johns wart - due to an increase of serotonin syndrome

33
Q

What are the opioid agonists-antagonists drugs

A

Bupernorphine
butorphanol
nalbuphine
pentazocine

34
Q

What are the therapeutic actions of opioid agonists-antagonists?

A

Act at specific sites in CNS to produce analgesia, sedation, euphoria and hallucinations
*Also block receptors that may be stimulated by other opioids

35
Q

What are the indications for opioid agonists-antagonists?

A

Relief of moderate to severe pain
adjuncts to general anesthesia
Relief of pain during labor

36
Q

What are the pharmacokinetics for opioid agonists-antagonists

A

readily absorbed after IM admin
Reach peak rapidly in IV

MEtabolized in liver, excreted in urine or feces

Cross placenta and milk

37
Q

What are the contraindication and cautions for opioid agonists-antagonists?

A

allergy
Nalbuphone should not be give to allergic to sulfites

Caution
physical dependence
Chronic obstructive pulmonary disease
MI, CAD, hypertensionon

38
Q

What are the adverse effects of opioid agonists-antagonists

A

respiratory depression, supression of cough reflext, nausea, vomit, constipation, light headed, dizzy, anxiety, fear, hallucination, loss of libido

39
Q

What are the opioid agonists-antagonists drug to drug interactions

A

Barbiturate - avoid
Previously recieved opiods
Pentazocine w/ tripelennamine (ts and blues) abused

40
Q

What drugs are the opioid antagonists?

A

naloxone
naltrexone

41
Q

What are the therapeutic actions of opioid antagonists

A

reverse effects of opioids including respiratory depression, sedation and hypotension
*treatment for OD

42
Q

What are the contraindications and cautions for opioid antagonists

A

Allergy
pregnancy
opioid addiction
CV disease

43
Q

What are the adverse effects of opioid antagonists

A

Acute opioid abstince syndrome - nausea, vomit, sweat, tachycardia, hypertension, anxiety

CNS excitement, tachycardia, bP changes, pulmonary edema

44
Q

What is the difference between a migraine headache and a cluster headache?

A

MIgraine - occur during sleep, sharp eye pain, 15-90 min, sweating, nasal congestions

Tension - times of stress, dull band pain around head 30 mins - 1week. Fatique, mild intolderant to light or sound

45
Q

What are common migraines?
What are classic migraines?

A

Common - occur w/out aura, cause severe pulsating pain w/ nausea, vomit, light & sound sentiviity. Aggrevated by physical activity

Classic - preceded by an aura, occurs 30 min beforepain occurs.PAin same as common

46
Q

What migraine drugs are recommended in children?

A

none – to many adverse effects

Topamax - 12* older

47
Q

What are the ergot derivative drugs?

A

dihydroergotamine
ergotaminie

48
Q

What are the therapeutic actions of ergot derivative

A

block alpha-adrenergic and serotonin receptor sites in brain to cause constriction of cranial vessels

Prevention of migraine or vascular headaches

49
Q

What are the pharmacokinetics of ergot derivative

A

rapidly absorbed from many routes
onset of action 15-30 mins
Metabolized in liver, excreted in bile

Dihydroergotamine - nasal spray or IM or IV
Egotamine - sublingual

50
Q

What are the contraindication and cautions for ergot derivative

A

allergy
CAD, hypertension, peripheral vascular disease
impaired liver
pregnancy

51
Q

What are the adverse effects of ergot derivative

A

vascular constriction

numbness
tingling
muscle pain
weakness, chest pain, itching
GI upset, nausea, vomitting

52
Q

What are the drug to drug interactions with ergot derivative

A

beta blockers - peripheral ischemia and gangrene is increased

53
Q

What are the triptan drugs?

A

almotriptan
eletriptan
frovatriptan
naratriptan
rizatriptan
sumatriptan
Zolmitriptan

54
Q

What are the therapeutic actions of triptan

A

bind to selective serotonin receptor sites to cause vasoconstriction of cranial vessels
*treatment of acute not for prevention

55
Q

What are the pharmacokinetics for triptan

A

rapidly absorbed from many sites
metabolized in liver, excreted in urine
cross placenta

56
Q

What are the contraindications for triptan

A

allergy
CAD
Caution with elderly
renal or hepatic dysfunction

57
Q

What are the adverse effects of triptan

A

numbness, tingling, coldness or strangeness, dizzy, weak, vertigo, GI discomfort,