Med Surg Ch 46 Flashcards
The most common degenerative disease of the brain, with no known cause or cure. The disease causes loss of neurons in the frontal and temporal lobes and primarily affects people older than 65 years but can also occur in younger people
Alzheimer disease (AD)
A measurable substance that indicates the presence of disease, infection, or toxic exposure
biomarker
the mental processes of perception, memory, judgment, and reasoning
cognition
a behavioral reaction to memory loss in which the patient fills in memory gaps with made-up facts and experiences
confabulation
an altered state of consciousness that is usually acute and of short duration
delirium
a false, fixed belief that cannot be changed with rational explanation
delusion
a broad impairment of intellectual function that usually is progressive
dementia
irretrievable total loss of memory
global amnesia
a sensory perception (touching, tasting, feeling, hearing, seeing) that occurs without external stimulation
hallucination
a misperception of an actual sensory perception; misinterpretation of reality
illusion
the phenomenon of becoming confused and disoriented at night, although oriented during the day
sundowning (sundown syndrome)
a broad term used to describe any type of dementia caused by vessel disease. Hypertension is a leading factor that predisposes a person
vascular dementia
inability to remember the names of things
anomia
misuse of objects due to failure to identify them
apraxia
inability to recognize familiar objects, taste, sound and other sensations
agnosia
memory loss
amnesia
inability to express oneself through speech
aphasia
the types of things that can cause delirium
Cerebrovascular accident, drug overdose, toxicity, withdraw, tumors, systemic infections, anesthesia, fluid and electrolyte imbalances, malnutrition
the changes in delirium that occur
The patient may be alert or lethargic, depending on the cause of the delirium, or may appear very confused. The attention span changes, and overall awareness of the environment decreases. Orientation and recent and immediate memory are impaired. Speech may be incoherent, and overall thinking can be disorganized and distorted. The patient will not be able to communicate thoughts in a meaningful way. The patient may experience illusions, hallucinations, or delusions.
Know about the anticholinergic medications
Anticholinergic medications have potent central nervous system effects and can cause a sudden episode of confusion.