Headache Flashcards
what are the three high risk HAs
subarach hemorrhage
stroke
bacterial meningitis
Medications that cause _______ commonly trigger migraines
vasodilation
abortive migraine therapies work best if given ______(when), with __________(dose); however many oral agents are ineffective d/t __________
best if given early on in the course of the HA
Large single dose more effective than repetitive small doses
migraine induced gastric stasis
Use ________ meds in severe migraines or those who don’t respond to ________
migraine specific medications
or those who don’t respond the NSAIDs
What are the 2 migraine specific drug txs
ergot derivatives
5-HT1B/1D agonists
what 4 migraine non-specific txs are there
NSAIDs
Analgesics
Antiemetics
Corticosteroids
______ are 1st line for mild-mod migraines
NSAIDs
what are the 3 NSAIDs used for mild-mod migraine
ASA
naproxen
ibuprofen
(excedrin migraine)= APAP + ASA +caffeine
Intranasal _________ is a nonspecific (not 1st line) tx for migraine
lidocaine
_______ are reserved for severe migraines unresponsive to other txs
opioids (butorphanol nasal spray)
barbiturates in combo with _______ or _______ may be used for mod-severe migraine, but have a high potential for overuse
analgesics or codeine
what is the barbiturate used with asprin and caffeine for migraine tx? what are the possible drug interactions?
butalbital
(causes CNS depression)
effects reduced by barbiturates: phenothiazide, quinidine, cyclosporine, theophylline, and beta blockers
effects increased by barbiturates: chloramphenicol, benzodiazepines, CNS depressants.
what 3 antiemetics can be used as a monotherapy to tx migraine
metoclopramide (IV)
chlorpromazine (IV/IM)
prochlorperazine
antiemetic MOA and sfx(also how to manage these).
MOA: dopamine antagonist
sfx: QT prolongation, sedation, and dystonia and akathisia(restlessness)
mgmt: for dystonia and akathisia use diphenhydramine IV
MOA of Erot alkaloids
nonselective 5-HT(serotonin) agonist causes vasoconstriction of cranial blood vessels
name the 2 ergot alkaloids
Ergotamine tartate (PO, SL, rectal) dihydroergotamine (injection or spray)
Ergotamine acute sfx (3)
N/V (pretreat with antiemetic)
chest tightness
diminished periph pulses
ergotamine chronic sfx (4)
ischemia
HTN
renal DO
tachy/brady
CI for ergotamine (5)
coronary or periph vasc dz sepsis pregnancy renal/hepatic failure *use of triptans w/in last 24hrs (b/c both vasoconstrict)
triptans MOA
selective 5-HT agonist (vasoconst in brain)
______ are 1st line for mod-severe migraine
Triptans
name the 3 Triptans
Sumatriptan (PO, SQ, nasal)
Rizatriptan (oral)
Zolmitriptan (Oral nasal)
(taste perversion from nasal spray)
triptan sfx (4)
chest tightness
dizziness
fatigue
nausea
5 CI for triptans
Ergot in last 24hrs (inc vasoconstriction)
MAOI in last 2 wks (inhib clearance of triptan=serotonin syndrome)
Ischemic heart/CV dz
uncontrolled HTN
SSRI (serotonin syndrome)
5 sx of serotonin syndrome
hyperthermia
musc rigidity
myoclonus
rapid change in mental status and vitals
_______ and _______ are 1st line prophylactic tx for migraines
beta blockers (esp propranolol) TCAs (esp amitriptyline)
Beta blockers CI (3)
periph vasc dz
depression
asthma
TCA CI
glaucoma
pregnancy
(black box: inc suicide risk in teens)
Venlafaxine MOA
SNRI (inhib SE and NE reuptake)
Venlafaxine CI and cautions
BLACK BOX: suicide
CI: MAOI
Valproic acid and divalproex sodium are ________ drugs which can treat migraine (NOT 1st line)
anticonvulsants
MOA of anticonvulsants and CI
inc GABA availability
CI:liver dz
Carbamazepine, topiramate, gabapentin
anticonvulsants that may be used to tx migraine
Methylsergide
reserved for SEVERE migraines
perph SERotonin inhib but CENTRAL SERotonin agonist
Serious sfx: fatal pulm fibrosis
Botulinum Toxin
not FDA approved (but shows promise for migraine)
inhib Ach release at presynaptic cholinergic jxn
name 5 tx for intractable migraines
DHE Sumatriptan Prochlorperazine or chlorpromazine narcotics corticosteroids
3 drug tx classes for tension-type HA
- analgesic +/- caffeine
- sedatives (butalbital)
- prophylactic (TCA)
what 4 analgesics are used +/- caffeine for tension-type HA
APAP
ASA
Ibuprophen
Naproxen
5 tx for acute cluster HA
100% oxygen Imitrex SQ Ergotamine+/- caffeine DHE-45 lidocaine nasal spray
5 prophylactic txs for cluster HA
verapamil prednisone ergotamine methylsergide lithium