Neuropharm Flashcards
Levodopa MOA
Dopamine replacement
Levodopa is converted to dopamine which then activates dopamine receptors
Levodopa Use
Reduce movement disorders
1st line drug
Always combined with carbidopa
May also supplement to a dopamine agonist
Levodopa A/E
Dyskinesia Dark urine/sweat Insomnia Nightmares Dysrhythmias Hallucinations/psychosis
Levodopa A/E early in treatment
N/V
Postural hypotension
Levodopa Drug interactions
Carbidopa, Entacapone: Increase effects
1st gen Antipsychotics: Decrease effects
MAOIs: increase risk for HTN crisis
Levodopa Contraindications
W/O carbidopa
Caution in renal failure
Narrow angle glaucoma
Levodopa Pt edu
Avoid high protein food
↳keep protein intake consistent throughout the day (decreases absorption)
May wear off between doses
Noticeable difference may take weeks - months
Take with food
Levodopa Nursing considerations
Treatment may seem effective initially, but becomes less effective as disease progresses
Carbidopa MOA
Dopamine agonist
Inhibits decarboxylation of levodopa in the intestines and peripheral tissue
Decreases A/E of Levodopa
Carbidopa Max dose
8 tabs/day no matter the strength
Carbidopa A/E
Only from increased absorption of levodopa
Carbidopa Pt edu
Avoid high protein foods
↳ eat consistent amount of protein throughout the day
May wear off between doses
Levodopa Monitoring
Dyskinesia
Other A/E
Carbidopa Monitoring
Dyskinesia
Other A/E
Carbidopa Nursing considerations
Treatment may seem effective initially, but becomes less effective as disease progresses
Carbidopa Drug interactions
Levodopa: decrease A/E of levodopa
Pramipexole MOA
Selectively binds to dopamine D2 and D3 receptors, Activating dopamine receptors, mildly blocks serotonergic and alpha adrenergic receptors
Non ergot dopamine receptor agonist
Pramipexole Use
Monotherapy (only early on) Produces significant motor performance improvement RLS w/ levodopa Reduces motor control fluctuations May reduce levodopa doses
Pramipexole Dose time
2-3 hr before bed
Pramipexole A/E
Nausea Dizziness Daytime somnolence Insomnia Constipation Weakness Hallucinations ❊Sleep attacks ❊Impulse control issues
Pramipexole A/E when Combo with Levodopa
Hallucinations
Daytime sleepiness
Postural hypotension
Pramipexole Contraindications
Compulsive behavior
Decrease dose with significant renal impairment
Pramipexole Drug interactions
Cimetidine
Pramipexole Pt edu
May take weeks to see max benefits