Exam 1: Parkinson's (PD) Flashcards
Class: Dopamine replacement (1st line)
Drugs:
- levodopa (L-dopa)
- levodopa-carbidopa (Sinemet, Parcopa)
Class: Dopamine replacement (1st line)
Drug: levodopa (L-dopa)
MOA:
- Converted to DA in CNS
Class: Dopamine replacement (1st line)
Drug: levodopa (L-dopa)
Indications:
- Typically 1st line of trmt (Most effective)
- Bradykinesia
- Tremor
- rigidity
Class: Dopamine replacement (1st line)
Drug: levodopa (L-dopa)
Contraindications:
- Less effective w/standing + coordination
Class: Dopamine replacement (1st line)
Drug: levodopa (L-dopa)
Side effects:
- N/V
**give on empty stomach - Orthostats
↑SE @ 5-10 yrs (1/2 pts)
• On-Off effect → may improve w/ “drug holiday” ~10 days
• Dyskinesia
• BENEFIT VS SE
Class: Dopamine replacement (1st line)
Drug: levodopa (L-dopa)
Toxicity/AE:
- DDS (4%)
Class: Dopamine replacement (1st line)
Drug: levodopa-carbidopa (Sinemet, Parcopa)
MOA:
- Carbidopa combined w/several formulations of l dopa
* *C-dopa alone = no benefit
Class: Dopamine replacement (1st line)
Drug: levodopa-carbidopa (Sinemet, Parcopa)
Indications:
↓ s/s
↑efficiency
Class: Dopamine replacement (1st line)
Drug: levodopa-carbidopa (Sinemet, Parcopa)
Contraindications:
- *over time loses benefit
- Usually by yr 5
Class: Dopamine replacement (1st line)
Drug: levodopa-carbidopa (Sinemet, Parcopa)
Side effects:
- Confusion
- Hallucinations - Delusions
- Agitation
- Psychosis
- DDS (4%)
- N/V
- Fatigue
- Dizziness
- HA
Class: Dopamine replacement (1st line)
Drug: levodopa-carbidopa (Sinemet, Parcopa)
Route/dosing:
- Small doses
- Titrated ↑ over several weeks → ↓ SE
- Sinemet - PO (slow-release: CR)
- Parcopa - sublingual
Class: Dopamine agonist (1st line)
Drugs:
- Bromocriptine (Parlodel)
- pramipexole (Mirapex)
- ropinirole (Requip)
- apomorphine (Apokyn)
Class: Dopamine agonist (1st line)
MOA:
- stimulate dopamine (DA) receptors in brain
Class: Dopamine agonist (1st line)
Indications:
- monotherapy in early PD
• Esp <65
• Need to add l-dopa after a few yrs - combination therapy in advanced PD
Class: Dopamine agonist (1st line)
Contraindications:
**Won’t work if pts already don’t respond to l-dopa
Class: Dopamine agonist (1st line)
Side effects:
- Sedation
- leg swelling
- Visual hallucinations
- Orthostats
- confusion
Class: monamine oxidase B (MAO-B) inhibitors (1st line)
Drugs:
- selegiline (Eldepryl)
- rasagiline (Azilect)
Class: monamine oxidase B (MAO-B) inhibitors (1st line)
MOA:
- Block enzymes that inactivate DA
Class: monamine oxidase B (MAO-B) inhibitors (1st line)
Indications:
**benefit usually small if any
Class: monamine oxidase B (MAO-B) inhibitors (1st line)
Side effects:
- Nausea
- HA
- Difficulty falling asleep
Class: monamine oxidase B (MAO-B) inhibitors (1st line)
Interactions:
Antidepressants = ↑ BP
Class: COMT inhibitors (2nd line)
Drugs:
- tolcapone (Tasmar)
- entacapone (Comtan)
Class: COMT inhibitors (2nd line)
MOA:
- ↓ catechol-O-methyl transferase
• Usually breaks down NTs
• ↑T1/2 l-dopa
Class: COMT inhibitors (2nd line)
Indications:
↑ effectiveness l-dopa
- on-off effect
Class: COMT inhibitors (2nd line)
Contraindications:
**not effective when taken alone
Class: COMT inhibitors (2nd line)
Side effects:
- Dyskinesias
- Hallucinations - Confusion
- n/v/d
- Orange urine
- Orthostats
- *Tamsar may ↑ liver enzymes → monitor 1st yr
Class: Dopamine releasing/antiviral
Drug:
amantadine (Symmetrel)
Class: Dopamine releasing/antiviral
Drug: amantadine (Symmetrel)
MOA:
- Improves S/S in advanced dx - ANTIVIRAL
- Benefit may be temporary
Class: Dopamine releasing/antiviral
Drug: amantadine (Symmetrel)
Indications:
- Combo w/l-dopa
• ↓ dyskinesia
Class: Dopamine releasing/antiviral
Drug: amantadine (Symmetrel)
Side effects:
- Visual hallucinations
- Confusion
- Ankle-swelling
- Livedo reticularis (Blotchy-purple skin)
Class: Anti-cholinergic
Drugs:
- benztropine (Cogentin)
- trihexyphenidyl
Class: Anti-cholinergic
MOA:
- Blocks cholinergic receptors in brain
• Restore DA/ACh balance
Class: Anti-cholinergic
Indications:
- ↓ tremor
- <70 yo w/o significant difficulties walking
Class: Anti-cholinergic
Side effects:
Hot as a hare, blind as a
bat, dry as a bone, red as a beet, mad as a hatter “can’t see, can’t pee, can’t spit, can’t shit”