Module 5: Unit C Migraines,Gout, Fibro Flashcards
What is the difference between acute/abortive versus prophylactic treatment of migraines?
Abortive is stopping the headache. Prophylactic is preventing frequency, reducing length and intensity (2+ per week).
Abortive treatments for migraine
Triptans – selective serotonin receptor agonists (5-HT1)
Ergot alkaloids (ergotamine & dihydroergotamine (DHE)
Ditan- 5HT1F receptor agonist (CV)
Oral CGRP receptor antagonist
Analgesics (Opioids, NSAIDs, acetaminophen (Tylenol)
Indication for prophylactic migraine medication
> 2/month
Attacks last > 24 hours
Cause major disruptions in ADLs with disability of 3 or > days
Abortive therapy fails or is overused
Symptomatic medications are contraindicated or ineffective.
Use of abortive meds > two times/week.
Migraine variants produce profound neurologic effects
Triptans (serotonin 1B/1D receptor agonist) Example
Sumatriptan (Imitrex)
Sumatriptan (Imitrex) indication
Acute/abortive treatment of migraines
MOA Imitrex
Selective activation of 5ht receptors suppresses the release of CGRP
Safety Sumatriptan (Imitrex)
Potential for coronary vasospasm
D2D with other triptans, ergots, MAOIs, SSRIs, SNRIs (agonist amplifies and we can give them too much serotonin).
Contraindications for Sumatriptan (Imitrex)
Ischemic Disease and MI
Ergot alkaloids Example
Dihydroergotamine
Ergotamine
Indication Ergot alkaloids
acute treatment of migraines
MOA ergot alkaloids
Alters transmission at serotonergic, dopaminergic, and a-adrenergic junctions. Causes constriction of cranial arteries.
Contraindications and D2d for Ergot
Pregnancy- can cause uterine contractions and abortion. Cateogry X.
Renal and hepatic impairment.
CAD, PVD, and uncontrolled hypertension.
CYP3A4 inhibitors.
Do not use with triptans.
BBW ergot
Potent inhibitors of CYP3A4 can raise levels posing a risk of vasospasm. Cerebral or peripheral ischemia can occur.
Side effect of ergot
Can stimulate nausea and vomiting.
Ditan Lasmiditan (Reyvow) indication
acute treatment of migraines
Ditan Lasmiditan (Reyvow) MOA
Activating the 5 HT1F receptors inhibits the release of neuropeptides and neurotransmitters and inhibits the pain pathway.
Safety with Ditan Lasmiditan (Reyvow)
Schedule V controlled substance (C-V) has abuse potential.
CNS depression and driving impairment.
calcitonin gene-related peptide (CGRP) antagonists example
Ubrogepant (Ubrelvy)
Indication for Ubrelvy
acute treatment of migraines
MOA Ubrelvy
calcitonin gene-related peptide (CGRP) antagonists
Side effects with Ubrelvy
The most common side effects are Central nervous system: Drowsiness (2% to 3%)
Beta-Blockers examples for prophylaxic migraines
Propranolol (Inderal)
Atenolol (Tenormin)
Indication for beta blockers
Migraine prophylaxis (angina, HTN, cardiac dysrhythmia, heart failure, symptoms of hyperthyroidism)
Safety with BB
Avoid it in patients with severe allergies- because it blocks epinephrine.
Mask symptoms of hypoglycemia.
Can worsen heart failure and asthma.
It can result in bradycardia, reduced cardiac output, precipitation of heart failure, AV block, Bronchoconstriction, and hypoglycemia.
BBW beta-blockers
Abrupt discontinuation may exacerbate angina and increase the risk of MI.
Pregnancy and lactations use of BB for headaches
Excreted in breastmilk. Not recommended in pregnancy or lactation.
Headaches Preventive- AEDs example
Divalproex (Depakote), Topomax
Indication Depakote
Seizure disorders, bipolar disorder, and migraine prevention.