Neurocognitive disorders Flashcards
Hallmark of delirium
disturbance in consciousness
Subtypes of delirium
Hyperactive
Hypoactive
Mixed
Delirium with mental health disorders
Often we don’t recognize that the Delirium is a separate thing and we assume it’s just part of the mental health disorder
High incidences of Delirium in
hospitalized people, especially with cancer or ICU patients
More common in men
Prognosis for Delirium
within 1 year the mortality is 40%
Risk factors for Delirium
The more physically ill, the higher risk
Substance abuse
V/H impairment
History of Delirium or other brain disorder
Presentation of Delirium
Reversed sleep-wake cycle Impaired recent and intermediate memory Usually resolves in 3 to 6 months Illusions are common. Might also have visual hallucinations
Tremors, incoordination, urinary retention, myoclonus, nystagmus, asterixis, increased tone and reflexes
Delirium work up
You’re looking for whatever is the underlying cause.
Do all the normal labs, syphilis, HIV, chest radiograph, EEG
The EEG activity can be slow, or it could be fast if related to alcohol withdrawal
Medication for Delirium
Haldol or 2nd gens for agitation
Benzos for insomnia
Non-pharm management for Delirium
They shouldn’t be over or under stimulated
Have pictures of family in the room and a clock/calendar
the high morbidity of Delirium is related to
injury, inactivity, pneumonia, nutrition/hydration deficits
Not so obvious things that could contribute to Delirium
Myocardial factors, reduced sensory input
Children and Delirium
they are especially susceptible because their brains are immature
Often mistaken for uncooperative behavior. If they aren’t able to be soothed by the parents, suspect Delirium.
Anticholinergics, other meds that affect cognition, and fever can cause it.
Dementia
A group of disorders characterized by cognitive deficits
Impaired executive functioning Impaired global intellect with preservation of level of consciousness Impaired problem-solving Organization skills Altered memory
Alzheimers
Gradual onset and progressive decline
No focal neuro deficits
The hallmark is amyloid deposits and neurofibrillary tangles. There is also diffuse cerebral atrophy and enlarged ventricles
Decreased ACh and NE
Vascular dementia
Second most common (which makes sense because a lot of people have HTN, etc)
Step-wise declines
More common in men
Carotid bruits, fundoscopic abnormalities, enlarged heart chambers
HIV dementia
it’s considered a subcortical dementia
Progressive decline and behavioral changes like alzheimers, but it also has motor abnormalities
It co-occurs with many other psych disorders.
It’s a bad sign, in the late stage they get psychotic (can also have mutism, mania, seizures), and they usually die within 6 months
Parenchymal abnormalities visualized on MRI scan
Antiretrovirals can interact with psych meds, so be careful.
(fyi, HIV neurocognitive disorder and HIV encephalopathy are less severe forms of HIV dementia)
Pick’s disease
Also known as frontotemporal dementia
Personality and behavior change in the early stage, later there are cognitive changes (this makes it unique- first behavior changes, then cognition)
HYPERSEXUAL/HYPERORALITY
Neuronal loss, gliosis, and Pick’s bodies are present
More common men
Creutzfeldt-Jakob disease
Fatal and RAPIDLY progresses
Initially: Fatigue, flulike symptoms, cognitive impairment
Later: Aphasia, apraxia, emotional lability, depression, mania, psychosis, marked personality changes, and dementia