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Pharmacology Ch 12 - Antiparkinson Drugs
Exam 2
32
Nursing
Not Applicable
03/21/2011

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Term
parkinson's characteristics
Definition
ABNORMAL MOVEMENTS & POSTURAL CHANGES
-tremors
-bradykinesia
-joint/muscular rigidity
-postural instability
-akinesia or inability to move
-rigid limbs
-shuffling gait
-stooped posture
-reduce facial expression
-soft speaking voice

DEGENRATIVE DISORDER OF THE CNS
PROGRESSIVELY GETS WORSE OVER TIME
IDIOPATHIC
EFFECTS MEN MORE THAN WOMEN
Term
dopaminergic
Definition
increase dopamine, inhibit re-uptake, slow down inactivation of dopamine
Term
anticholinergic
Definition
decrease effects of acetylcholine which in affect decreases an excess of acetylcholine compared to dopamine.
Term
PD
Definition
is a chronic progressive degenerative disorder of the central nervous system (CNS) characterized by resting tremor, bradykinesia, rigidity, and postural instability
Term
substantia nigra basil ganglia
Definition
Idiopathic PD results from progressice destruction of or degenerative changes in dopamine producing cells in the ________ _________ of the _____ _______; the area in the midbrain that controls smooth voluntary movement.
Term
resting tremor
Definition
THe first symptom of PD is often a ____ ____ that begins in the fingers and thumb of one hand (pill rolling).
Term
increasing
Definition
Drugs ised in PD treatment help correct the neurotransmotter imbalance by ____ the levels of dopamine.
Term
increase
Definition
Dopaminergic drugs ______ the amount of dopamine in the brain by various mechanisms.
Term
Selegine
Definition
inhibits metabolism of dopamine by monoamine oxidase
Term
Bromocriptine
Definition
ergot derivative that directly stimulates dopamine receptors in the brain
Term
levodopa
Definition
Most effective drug available for the treatment of PD
Term
carbidopa
Definition
Inhibits enzyme AADC
Term
Amantadine
Definition
Synthetic antiviral agent initially used to prevent influenza A virus
Term
Dopamine & Acetylcholine Roles
Definition
Dopamine = inhibitory
Acetylcholine = excitatory

These two neurotransmitors must be in balance to regulate posture, muscle control, and voluntary movement. In PD there is a decrease in inhib. dopamine and an incr. in excite acetylcholine
Term
PD Drug actions
Definition
Drugs used in parkinsons disease help to correct the neurotransmittor imbalance in the substantia nigra of the basil ganglia. By increasing levels of dopamine (dopaminergic drgus) or inhibiting the actions of acetylcholein in the brain (anticholinergic drugs)
Term
FDA black box warning for Selegiline transdermal
Definition
FDA issued a black box warning because of an increased risk of suicidality in children & adolescents when treated with this drug as an antidepressant
Term
Why is Levodopa contraindicative for those with narrow angle glaucoma?
Definition
Levodopa increases introcular pressure and dilate pupils
Term
Rasagiline
Definition
The newest MAO inhibitor. Indicated for initial treatment of idiopathic PD and as adjunct therapy with levodopa.
Term
Tyramine containing foods
Definition
Rasagiline may or may not effect MAO-B in humans therefore care should be taken with ingestion of tyramine containing foods.
Term
Rasagiline and antidepressants
Definition
Rasagiline has to ability to increase serotonin neurotransmissions. Given with drugs that inhance stimulation of serotonergic receptors it can cause serotonin syndrome. Leads to hyperpyrexia and death.
Term
RLS
Definition
Ekbom's Syndrome - restless leg syndrome. Tingling, burning, creeping, or prickling feeling particularly in the calfs and legs. May result in insomnia, mental distress, and sometimes suicide.
Term
Drugs for RLS
Definition
Dopaminergic drugs may be prescribed for Ekbom's (Levodopa, cabergoline, pramipexole, ropinirole, etc.)
Term
amantadine
Definition
increases dopamine activity by increasing dopamine release and reducing neuronal reuptake.
Term
Dopamine receptors
Definition
Apomorphine increases dopamine activity by directly stimulating ________ ____________.
Term
Dopamine, acteylcholine
Definition
Parkinsonism is a progressive neurodegenerative disorder characterized by a deficit of _____ and a relative excess of ______.
Term
Monitor Tolcapone
Definition
liver function should be monitored. Check liver enzymes
Term
Amantadine and kidneys
Definition
Amantadine is excreted by kidneys. Patients with renal failure need close monitoring.
Term
Levodopa/Carbidopa dosage with aging
Definition
As a person ages their AADC enzyme level decreases. AADC is responsible for levodopa breakdown. Therefore doasge is expected to be reduced with aging.
Term
Optimal dose
Definition
The minimal dose that allows client to function adequately.
Term
Delayed usage of...
Definition
Levodopa/Carbidopa is most effective with bradykinesia and rigidity. However because it becomes ineffective after 5 to 7 years of use the prescription is delayed as long as possible.
Term
memory function
Definition
Acetylcholine is used with caution in the elderly because it may impair ___ ___.
Term
Anticholinergic drugs help to
Definition
reduce salivation, spasicity, & tremors
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