Parkinsons Flashcards
Pathophysiology of parkinsons?
progressive death of dopamine neurone in substantial nigra (basal ganglia)
Role of dopamine in parkinsons?
important for smooth, controlled movements
Protective factors for parkinsons?
smoking, high coffee use
intense exercise
Hallmark movement sx of parkinsons?
Tremor
Rigidity
Akinesia
Postural instability
What do you need for diagnosis of parkinsons?
bradykinesia, tremor or rigidity, dopamine helps
What patients usually get tremors?
younger and more slow progression
What patients get the rigid subtype?
older and much more rapid progression
What can cause sx similar to parkinsons?
dopamine blocking agents such as AP and metoclopramide
When is parkisnons atypical?
if no response to levodopa
Other types of parkinsons?
Vascular and secondary due to other substances
Medications that can cause Parkinsonism?
antipsychotics
metoclopramide
lithium
VA
What antinauseant has less affects on dopamine?
domperidone
What AP has less risk for Parkinsonism?
quetiapine, clozapine
Sx of Parkinson’s in early stage?
loss of smell
constipation
depression
fatigue
act out dreams
flat affect
soft speech, dry eyes
What are later parkinsons sx?
hallucinations
drooling
sex dysfunction
urinary incontinence
orthostatic hypotension
dementia
Treatment to reduce progression of PD?
NONE
Non pharm for PD?
Physical/occupational therapy
speech therapy
psych support
hearing/vision/ dental care
Why use carbidopa/benserazide?
prevents conversion of levodopa to dopamine outside the brain= better efficacy and a/e
What is levodopa best for?
bradykinesia and rigidity
benefit in 2 weeks
What sx is levodopa not good for?
tremor, balance and non motor sx
Why do you need to taper off parkinsons meds if needed?
neurolep[tic malignant syndorme
Why titrate slow of levodopa?
nausea and gi sx
What to avoid congesting with levodopa?
protein, iron, antacids
S/e of levodopa?
gi
dizzy
fatigue
vivid dreams