Neurocognitive Disorders Flashcards
Delirium
-↓ ability to focus,
-Change in cognition of perceptual
-Disturbance caused by a medical condition or developed
during intoxication / withdrawal
Delirium Risk Factors
↑ severity of physical illness
Prescription medications
Recovery from hip fractures
AIDS
Terminal cancer
Incidence and Prevalence of delirium
Often untreated / overlooked
1% adults aged 55 and older
10% emergency dept patients
80% critical care patients
80% patients in end of life care
60% in nursing homes or post acute care settings
Signs and Symptoms of delirium
-Prodromal; restlessness, anxiety, sleep disturbance, & irritability
Altered arousal and disturbance of the sleep-wake cycle
Illusions, delusions, or hallucinations
Emotional lability
Decreased attention, impaired memory, or disorientation to
time, place, or person
Constructional apraxia
Dysgraphia
Motor abnormalities
Muscle spasms
Dysnomic aphasia
Reflex / tone changes
Orientation in dementia
-x1 means orientated to person
-x2 is orientated to person and place
-x3 is orientated to person, place and, time
-x4 is oriented to person, place, time, and situation
Three Sub-types of Delirium:
(1) Hyperactive-agitation, restlessness, and excessive emotional reactivity or emotional lability
(2) Hypoactive- somnolence, withdrawal, decreased responsiveness, and apathy
(3) Mixed-symptoms of both hyperactive and hypoactive delirium within the same day
Course and Prognosis of delirium
Rapid onset
Most meet criteria within 48 hrs of symptoms
Course fluctuates; days or hours
Symptoms generally worsen at night (sundowning)
< 1 week duration
Symptoms will persist if causing condition is present
Condition treated: 3-7 days symptoms recede
Dementia and Alzheimer’s Disease
Dementia is a general term for a decline in mental ability severe enough to
interfere with daily life.
* Alzheimer’s is the most common cause of dementia
Alzheimer’s Disease
Cognitive impairment
Cause is poorly understood
There is no perfect biological marker that is diagnostic, made after ruling out
alternate disorders
Cortical atrophy, widened sulci, and ventricular enlargement often
observed in MRIs
“Shrinking Brain”
Alzheimer’s Disease Neuropathological Degeneration
- neurofibrillary tangles / beta-
amyloid plaques shrink brain structure
-Plaques collect outside and around the neurons; neuronal death
-Neurofibrillary tangles; contaminated tau protein
Types
-Early onset: Before age 65 (Less than 5% of AD is early onset, and this
form of the disease is often inherited)
-Late onset: At or after age 65
Alzheimer’s Disease Risk Factors:
-Down’s syndrome
-Neurotransmitter abnormalities
-Risk for developing cardiovascular disease
Alzheimer’s Disease: Incidence and Prevalence
~ 5.3 million Americans
~ 200,000 individuals < age 65
By 2050 18 million Americans with NCD
14 million NCD due to AD
Higher incidence in women
Mild Stage of AD
difficulty performing tasks and make mistakes along the way. Short term and long term memory will start to decline. The patient may have paraphasia, anomia, and circumlocution. The patient may also have some emotional disturbance.
Moderate Stage of AD
trouble maintaining attention to tasks, becoming more sensitive, losing the ability to problem solve and the memory continues to decline. Language becomes non fluent, may feel lost in the surroundings, and lose awareness of social standards.