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Unit 4 - Geriatric Pharmacology
Test 1
74
Nursing
Undergraduate 3
06/13/2014

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Term
What are the physiologic changes associated with geriatrics?
Definition
DECREASED EVERYTHING!
except therapeutic effect in increased because they cannot metabolize the drug as well
Term
What is polypharmacy?
Definition
The prescription, administration, or use of more medications than clinically indicated in a given patient
Term
How are pharmacokinetics effected?
Definition
-Decrease in absorption
-Decreased protein in blood, so more free drug available for distribution.
-Decrease in metabolism of the drugs due to decrease in hepatic enzyme production which can lead to toxicity because of increased half life
-Decreased excretion because decreased renal blood flow. Drug toxicity
Term
What drugs are not recommended for use in older clients?
Definition
-Analgesics except Morphine
-Tricyclic Antidepressants use SSRI's instead
-1st generation antihistamines use 2nd instead
-Antispasmodics
-Muscle relaxants
-Sedatives use short acting benzos instead
-
Term
What hypnotics are approved for geriatrics?
Definition
Low doses of benzodiazepines with short or intermediate half lives.
Term
What hypnotic should geriatrics avoid?
Definition
-Flurazepam HCL
Term
What hyptnoics are recommended for older adults?
Definition
-Temazepam (Restoril)
-Triazolam (Halicon)
-Estazolam
Term
What diuretics and hypertensives are approved for older adults?
Definition
CCB, ACE inhibitors, A II blockers


Reduced dose of hydrochlorothiazide.

Higher dose can cause electrolyte imbalance
Term
What happens to half life of cardiac glycoside Digoxin in older adults?
Definition
Half life is increased to 70 hours.
Term
What is important to note about Warfarin in old people?
Definition
Drug ia 99% protein bound and old people have less serum protein so there is an increased bleeding risk for older adults
Term
What is antibacterials are safe for old people?
Definition
-Penicillins
-Cephalosporins
-Tetracyclines
-Sulfanomides

Adjust dose based on renal fxn and the half-life of each drug
Term
What GI drugs are safe for older adults with peptic ulcers?
Definition
-Histamine (H2) blockers
-Sucralfate

Tagament is NOT suggested for older people
Term
What GI drugs are safe for older adults with constipation?
Definition
Laxatives are safe but should not be overused in fear of electrolyte and fluid imbalance
Term
How is the dose of antidepressants changed for older adutls?
Definition
30%-50% of what a normal dosage is
Term
What antidepressants are safe for old people?
Definition
-Tricyclic but they do cause anticholinergic effects
- Fluoxetine (Prozac)

NO MAOIS
Term
What is considered with old people and narcotic analgesics?
Definition
-Dose related adverse rxns
-Hypotension and respiratory depression may occur
Term
What does A.C.C.E.P.T. stand for?
Definition
A - Accepts phyiscal chagnes
C - Conducts a life review
C - Confusion that is ACUTE may be indicative of med rxn, infection, fluid and electrolyte imbalance
E - Ego integrity vs. despair
P - prep for death
T - the past time is spent reminiscing over life
Term
What is G.E.R.I.A.T.R.I.C stand for?
Definition
G - gerontology organized around FANCAPES
E - eval for abuse/anxiety
R - risk for falls
I - interdisciplinary collaboration
A - assess skin integrity, plan to prevent breakdown
T - teach fam and client
R - Report (SBAR)
I - impact of infection, fluid and electrolyte imbalance etc.
C - Confusion (acute) present
Term
What does FANCAPES stand for?
Definition
F - Fluid
A - Aeration
N - Nutrition
C - Communication/Cognition
A - Activity/Ability
P - Pain/Polypharmacy
E - Elimination
S - Skin/Spirituality/Social Support/Sleep
Term
What are special considerations when teaching geriatrics?
Definition
-senses need to be as sharp as possible
+clean glasses
+fxn hearing aids in place
-Speak in tones they can hear
-Face them
-Treat w/ respect
-Use large print and bright colors
-Rvw meds each visit
-Encourage a schedule
-W/ confusion, suspect medications
-Encourage to report if new drug is not improving condition
-Avoid elder speak
Term
What are common causes for med errors in the elderly?
Definition
Poor eyesight, forgetfulness, OTC drug use, using other RX meds, lack of financial resources, lack of understanding of importance of med, failure to understand instructions, refusal to take med because of side effects
Term
How many medications does a 70 y.o take on average?
Definition
7
Term
How many meds do 85+ take?
Definition
12
Term
T or F?
FREQUENCY OF ADVERSE DRUG REACTIONS INCREASES AS THE NUMBER OF RX DRUGS INCREASES
Definition
T
Term
What is essential in education of medication compliance?
Definition
-Emphasize meds are essential
-Attempt to reduce meds that are not essential
-Screen med use using a standard assessment tool
-Assess alcohol use
-Encourage the use of written med reminder systems/med planners
-Monitor drug dosage strength (elderly
-Encourage the use of one pharmacy
-Work with health care providers and pharmacy to establish routine drug profiles on all older adult patients
-Advocate for low income Rxs prescription plans
Term
What is the pathology of parkinson's disease?
Definition
Chronic neurologic disorder
Degeneration of dopaminergic neurons
Imbalance of the neurotransmitters
Less dopamine
Too much acetylcholine
Term
What is dopamine?
Definition
an inhibitory neurotransmitter
Term
What is acetylcholine?
Definition
an excitatory neurotransmitter
Term
What does dopamine normally do? What's different in parkinson's
Definition
normally maintains control of acetylcholine and inhibits its excitatory response. There is a degeneration of dopamine neurons so there is an imbalance between the 2.
Term
What happens with less dopamine?
Definition
acetylcholine is unopposed, causing excitation and stimulation of neurons that release gamma-aminobutyric acid (GABA).
Term
What happens with more GABA?
Definition
symptomatic movement disorders occur.
Term
What are the risk factors for parkinson's disease?
Definition
Over 60
Male
Family history of PD
Exposure to environmental toxins
Caucasian
Head trauma
Term
What are the 4 main MOTOR symptoms of Parkinson's?
Definition
-Shaking/tremor at rest
-Slowness of movement (bradykinesia)
-Stiffness or rigidity of the arms/legs/trunk
-Trouble w/ balance and falls
Term
How is Parkinson's diagnosed?
Definition
-Detailed H&P
-Detailed history or current and past meds
-Neurological exam that assesses the agility of arms, legs, muscle tone, gait and balance.
-United Parkinson's Disease Rating Scale
Term
What is the #1 way to diagnose Parkinson's?
Definition
Response to medications that imitate or stimulate the production of Dopamine
Term
What drugs treat parkinson's?
Definition
-Anticholinergics
-Dopaminergics
-Dopamine agonists
-MAO-B inhbitiors
-COMT inhibitors
Term
How do anticholinergics treat Parkinson's?
Definition
-Block cholinergic receptors
-Takes competition AWAY
Term
How do dopaminergics treat Parkinson's?
Definition
-Convert to dopamine
-Carbidopa/Levodopa (Sinemet)

-CARBIDOPA is the CAR that delivers Levadopa
Term
How do dopamine agonsists treat Parkinson's?
Definition
Stimulate dopamine receptors
Term
How do MAO-B inhibitors treat Parkinson's?
Definition
Inhibit MAO-B enzyme that interferes with dopamine
Term
How do COMT inhibitors treat Parkinson's?
Definition
Inhibit COMT enzyme that inactivates dopamine
Term
What is the action of Carbidopa-Levodopa?
Definition
converted to dopamine
Increases mobility
Term
What is the half-life of C-L? What does that mean?
Definition
Short half life so it must be taken 3-4 hours a day.
Term
What are the side effects of C-L (Sinemet)? Dopaminergic
Definition
Fatigue, insomnia
Dry mouth
Blurred vision
Orthostatic hypotension, palpitations, dysrhythmias
Urinary retention
Nausea, vomiting
Dyskinesia, psychosis, severe depression
Term
Are dopaminergics anticholinergic?
Definition
no
Term
How do anticholinergics treat Parkinson's?
Definition
They are parasympatholytics that inhibit the release of acetylcholine. They are said to treat drug-induced parkinsonism (pseudoparkinsonism).
Term
What is the action of Trihexyphenidyl HCl (Artane)?
Definition
inhibit release of acetylcholine
Term
What is the therapeutic effect of Trihexyphenidyl HCl (Artane)?
Definition
Decrease tremors and rigidity
Term
What is another parasympatholytic?
Definition
Benztropine (Cogentin)
Term
What nursing interventions are r/t anticholinergics?
Definition
Monitor vital signs for increased heart rate
Monitor urine output for early detection of urinary retention.
Increase fluid intake (not in CHF), fiber, and exercise to avoid constipation.
Observe for involuntary movements.
Advise client to avoid alcohol, cigarettes, caffeine, and aspirin to decrease gastric acidity.
Encourage client to relieve dry mouth with ice chips, hard candy, or sugarless chewing gum.
Suggest use of sunglasses for photophobia.
Term
What are the drug interactions r/t Carbidopa-Levodopa (Sinemet)? DOPAMINERGIC
Definition
Decreased effect w/:
Anticholinergics
Phenytoin
Tricyclic antidepressants
MAO inhibitors
Benzodiazepines
Phenothiazines
Vitamin B6
Term
What does PARK DARK stand for?
Definition
P - Pill rolling
A - About to fall
R - Rigidity
K - Kan't swallow (Drool)
D - Dopamine/L-Dopa/Sinemet
A - Artane - Improves Rigidity
R - Restrict Coffee
K - Keep tremors down with antihistamines
Term
What is the pathopysiology of Alzheimer's disease?
Definition
Neuritic plaques form
Neurofibrillary tangles are in neurons outside neurons and in cerebral cortex.
Cholinergic neurotransmitter abnormality
Term
What is Alzheimer's a deficiency of?
Definition
Degeneration of cholinergic neuron and deficiency of acetylcholine
Term
Which gender is more affected by Alzheimer's?
Definition
Women
Term
What are the risk factors for Alzheimer's?
Definition
-Age
-Genetics
-Fam History
Term
What can prevent Alzheimer's?
Definition
-Head trauma
-What's good for your heart is good for your head
Term
What are the symptoms of Alzheimer's?
Definition
Memory loss that disrupts daily
Challenges in planning or solving problems
Difficulty completing familiar tasks
Confusion with time or place
Trouble understanding visual images and spatial relationships  
New problems with words in speaking or writing  
Misplacing things and losing the ability to retrace steps
Decreased or poor judgment
Withdrawal from work or social activities
Changes in mood and personality
Term
What is the Slow House of Alzheimer's?
Definition
-Lost and Wandering
-Safety and Confinement
-Confusion and Decision Difficulty
-Incontinence
Term
What are the characteristics of Alzheimer's?
Definition
Loss of memory, logical thinking, judgment
Time disorientation
Personality changes
Hyperactivity
Tendency to wander
Inability to express oneself
Later hostility, paranoia
Term
How is Alzheimer's diagnosed?
Definition
-Thorough medical history
-Mental status testing
-Physical and neurological exam
-Tests to rule out other causes of dementia-like symptoms
Term
What are the 2 FDA approved drugs to treat Alzheimer's?
Definition
-Cholinesterase Inhibitors (ARICEPT, COGNEX)
-Memantine (Namenda)
Term
How to the cholinesterase inhibitors work?
Definition
Breaks down and blocks ACh
Term
What does Memenda (Namenda) treat?
Definition
to treat the cognitive symptoms (memory loss, confusion, and problems with thinking and reasoning) of Alzheimer's disease.
Term
What is non-FDA approved treatment of Alzheimer's?
Definition
Alternative Vit. E
Term
What is the drug action of Donepril (Aricept)? Acetylcholinesterase Inhibitors
Definition
Allow more acetylcholine in neuron receptors
Term
What is the therapeutic effect of Donepril (Aricept)?
Definition
Increase cognitive function
Term
What is Donepril (Aricept) used for?
Definition
Mild-moderate alzheimer's
Term
What are the side effects of Donepril (Aricept)? Acetylcholinesterase Inhibitors
Definition
Headache, dizziness
Depression
GI distress
Dehydration, dry mouth, constipation
Blurred vision
Insomnia
Hypertension, hypotension, dysrhythmias
Hepatotoxicity
Term
What are the nursing interventions r/t acetylcholinesterase inhibitors?
Definition
Nursing interventions
Monitor vital signs.
Maintain consistency in care.
Monitor behavioral changes.
Safety
Provide safety when wandering.
Arise slowly to avoid dizziness.
Monitor for GI bleeding.
Inform family of support groups.
Term
Summary of pathophys of Parkinson:
Definition
Not enough dopamine
Too much AcH
Shaking, pill rolling, shuffling gait, flat affect
Carbadopa-Levadopa
Term
Summary of pathophys of Alzheimer's:
Definition
Not enough AcH
Memory, cognitive impairment
Namenda, Exelon, Aricept etc.
Term
What laboratory values may be altered in a client who is taking carbidopa/levodopa?
Definition
Pulse pressure
Term
Which comment to the nurse indicates more teaching is needed for a client taking carbidopa/levodopa?
Definition
A. “I know I need to take this drug once a day.”

Drug has a short half-life and must be taken 3-4 times a day.
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