Exam 2 Drugs Flashcards
What are triggers for a migraine?
Stress Hormones Nitrates/Nitrites Red wine Chocolate Sugar and caffeine Lack of sleep Strong smells
When do migraine meds work the best?
In the aura phase
What does a patient experience during the aura phase?
Smelling weird smells
Seeing flashing lights
Can sense something is wrong (migraine about to start)
Prototype for migraines
Sumatriptan (Imitrex)
Sumatriptan MOA
Agonist at serotonin receptors
Serotonin causes vasoconstriction, which can cause migraines
Contraindications for sumatriptan
Ischemic cardiac history (MI, Angina) Stroke patients Ischemic bowel disease Anyone with a high risk for coronary artery disease, such as - Post menopausal women - Men over 40 - Those with hypertension/high cholesterol - Diabetes - Smokers
Interactions for sumatriptan
SSRIs (selective serotonin reuptake inhibitors)
MAOIs (monoamine oxidase inhibitors)
Antidepressants raise serotonin levels
St. John’s wart - can lead to serotonin syndrome
What is serotonin syndrome?
A drug reaction due to high levels of serotonin in the body, caused by medication
S/S of serotonin syndrome
Neuromuscular excitation - tremors, hyperreflexia
ANS dysfunction - tachy, fever, sweating, flushing, headache
Altered mental status - confused
How is serotonin syndrome caught?
What should you do if it happens?
It can only be diagnosed clinically; the nurse connects the symptoms and drugs (no tests)
- stop the drug and provide supportive treatment (may need ICU)
Patient education for Alzheimer’s medication
Drugs will NOT cure; can only delay progression and ease symptoms
Cholinesterase Inhibitor prototype
Donepezil (Aricept)
Donepezil indication
Alzheimer’s disease
Donepezil contraindications
NSAIDs - increases risk of GI bleeding
Bradycardia - notify prescriber if pulse is less than 60 and hold drug
Donepezil patient education
Teach them how to take their pulse (under 60 is bad)
Take med on a schedule (before bedtime b/c of drowsiness)
NMDA receptor antagonist prototype
Memantine (Namenda)
Memantine indication
Moderate to severe Alzheimer’s disease
Memantine contraindications
Seizures
CV disease
Severe hepatic or renal impairment
Memantine adverse effects
Heart failure
Memantine patient education
No foods that alkalinize urine (citrus, veggies)
Signs of hepatic or renal impairment or heart failure
Signs of hepatic impairment
Check LFTs AST/ATL increased Jaundice ( look at eyes/palms for darker skin tones) ABD pain N/V
How to monitor for renal impairment
BUN
Creatinine
I&Os
Signs of GI bleeding
Blood in stool (black and tar-like) "Coffee ground" emesis Hematocrit low Dizziness Hypotensive/Tachy Anemia
Signs of heart failure
Crackles
JVD in neck
SOB at rest or exertion
Peripheral edema