Dementia and Delirium Flashcards
Dementia is a term used to describe a cluster of symptoms including:
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- Forgetfulness (progressive)
- Difficulty doing familiar tasks
- Confusion
- Poor judgment
- Decline in intellectual functioning
- Dementia is not a part of normal aging
Diagnostic Criteria for Dementia (DSM-5)
Significant cognitive impairment in at least one of the following cognitive domains.
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- Learning and memory
- Language
- Executive function
- Complex attention
- Perceptual-motor function
- Social cognition
Diagnostic Criteria for Dementia (DSM-5):
- The impairment must be _______ and represent a significant _______ from a previous level of functioning
- The cognitive deficits must interfere with what?
- The cognitive deficits result in what? 2
- The cognitive deficits do not occur exclusively solely during a what?
- WHat is it not due to?
- acquired
decline - independence in everyday activities
- functional impairment (social/occupational)
- delirium
- NOT due to other medical or psychiatric conditions
Causes of Dementia
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- Alzheimer’s disease (approximately 70%)
- Vascular dementia – (Strokes and TIA’s)
- Parkinson’s disease
- Frontotemporal dementia (FTD)
- Normal-Pressure hydrocephalus (NPH)
- Dementia with Lewy Bodies
- Delirium/Depression
- Other, less common causes
“Modifiable” Causes of Dementia
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- Medications (anticholinergics)
Studies suggest evidence of a link between long-term use of otc anticholinergics like diphenhydramine and dementia - Alcohol
- Metabolic (B12, thyroid, hyponatremia, hypercalcemia, hepatic and renal dysfunction)
- Depression - severe
- CNS neoplasms, chronic subdural hematoma
- NPH
- What is alzheimer’s disease?
2. What sign is most prominant early?
- Progressive neurologic disorder that results in memory loss, personality changes, global cognitive dysfunction, and functional impairments.
- Loss of short-term memory is most prominent early.
Alzheimer’s Diagnosis is a dignosis of what?
exclusion
Alzheimer’s Diagnosis
symptoms and behaviors?
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- Short-term memory loss (early)
- Long-term memory loss preserved until late
- Poor judgment and indecisiveness (early)
- Disorientation/inability to adapt new environments
- Personality change and disinhibition
- Communication disorders: comprehension and expression
- Demanding and repetitive behaviors (early to mid)
- Behavior changes w/ aggression, delusions, hallucinations
AD Diagnosis 8
- Thorough detailed History
- mental status evaluation
- a depression screen
- physical examination, including 5. vision and hearing screen
- limited laboratory testing
- neuroimaging
- more extensive neuropsychological testing
AD MRI findings?
The laboratory testing includes what? 4
- An MRI finding of bilateral hippocampal atrophy suggests AD, but is not specific or sensitive.
- CBC,
- CMP,
- serum B12
- TSH
MMSE
What are the four ranges in scores?
What are the results affected by? 5
- 20-26: mild functional dependence
- 10-20: moderate, more immediate dependence
- Score below 10: severe, total dependence
Results affected by educational level, low SES, language skills, illiteracy, impaired vision/hearing.
Pathology of AD. There are 3 consistent neuropathological hallmarks. What are they?
How do the pathological problems relate on the timeline with clinical symptoms?
- Amyloid-rich senile plaques
- Neurofibrillary tangles
- Neuronal degeneration
These changes eventually lead to clinical symptoms, but they begin years before the onset of symptoms.
What are the four diagnosises of AD?
- Definite AD
- Probably AD
- Possible AD
- Unlikely AD
Describe each of the following:
- Definite AD 2
- Probably AD 2
- Possible AD 2
- Unlikely AD 3
- Histopathological evidence (requires autopsy)
- Course and examination characteristic of AD
- Deficits in 2 or more areas of cognition
- Onset 40-90 (usually > 65); progressive course
- Other causes excluded - Deficit in only 1 area of cognition
- Atypical course
- Other dementia causes present
- Deficit in only 1 area of cognition
- Sudden onset
- Focal signs
- Seizures or gait disturbance early in course
Describe Stage 1 of AD?
- Stage 1: Normal
Patient may potentially be free of objective or subjective symptoms of cognition and functional decline and also free of associated behavioral and mood changes.
The pathology has already begun
Describe stage 2 of AD?
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Stage 2: Normal aged forgetfulness
- Half or more of the population of persons over the age of 65 experience subjective complaints of cognitive and/or functional difficulties. The nature of these subjective complaints is characteristic.
- Elderly persons with these symptoms believe they can no longer recall names as well as they could 5 or 10 years previously.
- They also intermittently experience difficulties in concentration and in finding the correct word when speaking.
Stage 3 of AD?
Stage 3: Mild cognitive impairment
Persons at this stage manifest deficits which are subtle, but which are noted by persons who are in close contact.
Stage 3. The subtle deficits may manifest in diverse ways, such as: 4
- Repeated questions
- Showing compromise in their ability to perform executive functions.
- For persons who are still working, job performance may decline.
- For those who must master new job skills, decrements in these capacities may become evident
Describe stage 4 AD?
Stage 4: Mild Alzheimer’s disease
The diagnosis of probable Alzheimer’s disease can be made with considerable accuracy in this stage. The most common functioning deficit in these patients is a decreased ability to manage instrumental (complex) activities of daily life.
Describe stage 5 of AD?
Stage 5: Moderate Alzheimer’s disease
In this stage, deficits are of sufficient magnitude as to prevent catastrophe-free, independent community survival.
Stage 5: The characteristic functional change in this stage is what?
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- deficits in basic activities of daily life such as the inability to choose proper clothing to wear for the weather conditions and/or for the daily circumstances
- cannot recall such major events and aspects of their current lives as the name of the current president, the weather conditions of the day, or their correct current address.
- may not recall the names of some of the schools which they attended for many years
Describe stage 6 AD? 2
The total duration of the stage of moderately severe AD is approximately what?
Stage 6: Moderately severe Alzheimer’s disease
1. Ability to perform basic activities of daily life becomes compromised. Functionally, in addition to having lost the ability to choose their clothing without assistance, they begin to require assistance in putting on their clothing properly.
- Cognitive deficits are of sufficient magnitude as to interfere with the ability to carry out basic activities of daily life. Without assistance they will not be able to maintain living at home.
- 5 years.
Describe Stage 7 AD? 2
- How long does this stage last?
- It is followed in survivors, by a final stage, in which AD patients additionally lose the ability to
- Speech ability is limited to only a few words. Later, all intelligible speech is essentially lost.
- Subsequently, ambulatory ability is lost and the patient requires assistance in walking.
- This end stage lasts approximately 1 year.
- hold up their head independently.
Stage 7: Physical rigidity occurs due to immobility. Neurological reflex changes also become evident. Particularly notable is the emergence of so-called what?
‘infantile‘ or ‘primitive‘ reflexes which are present in the infant but which disappear in the toddler (Babinski).
What is the most common cause of death in AD?
Some other causes of mortality in AD? 4
The most frequent cause of death is aspiration pneumonia.
- infected decubital ulcerations
- stroke,
- heart disease
- cancer
Medical treatment:
Cholinesterase Inhibitors
MOA?
Which ones are they? 3
What part of dementia are these used to treat?
Cholinesterase inhibitors curb the breakdown of acetylcholine.
Help increase the levels of acetylcholine in the brain. Which may slow the progression of symptoms for about half of people taking them for a limited time, on average 6 to 12 months.
- Donepezil (Aricept)
- Rivastigmine (Exelon)
- Galantamine (Reminyl)
Cognitive impairment
- What is the only treatment approved by the FDA in all stages?
- What can it improve?
- Donepezil (Aricept) – 5mg po qday at bedtime (Cholinesterase Inhibitors)
- neuropsychiatric symtpoms
- Rivastigmine (Exelon) - 4.6mg/24hrs (max 9.5)
is approved for what kind of AD?
(Cholinesterase inhibitors)
- Galantamine (Reminyl), Razadyne (formerly Reminy) 8mg po qday (max 16-24mg)
is approved for what? - Contraindications?
- Common side effects? 5
- Approved for use in mild to moderate Alzheimer’s dementia and is available as a skin patch, capsules, and liquid form.
- Also approved for mild to moderate Alzheimer’s dementia
- severe renal
- hepatic impairment
- Diarrhea,
- vomiting/nausea,
- fatigue/insomnia,
- loss of appetite
- weight loss.
- NMDA (n-methyl-D-aspartate) receptor antagonists approved for what?
- Thought to play a protective role in the brain by regulating the activity of what?
- SE? 3
- What is this used to treat in AD?
- Approved to treat moderate-to-severe Alzheimer’s disease.
- Glutamate– also plays a role in learning and memory.
- dizziness
- confusion
- hallucinations
- cognitive impairment
- Brain cells in people with Alzheimer’s disease release too much what?
- glutamate
Namenda helps regulate glutamate activity.
Why would we say to use vit D in AD pts?
has antioxidant properties
Antidepressants: SSRI’s recommended are?
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- Sertraline (Zoloft) 50mg po qday – max 200mg
- Paroxetine (Paxil) 20mg po qday – max 50mg
- Citalopram (Celexa) 20mg po qday – max 40mg
Antipsychotic medications for hallucinations, delusions, aggression, hostility and uncooperativeness.
Newer “atypical” agents such as aripiprazole (Abilify); olanzapine (Zyprexa); quetiapine (Seroquel); risperidone (Risperdal); and ziprasidone (Geodon)
These are atypical antipsychotics and have shown an increased risk of sudden death; they should only be used after discussion with the patient’s internist or neurologist.