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36 Cards in this Set

  • Front
  • Back
Cognitive Disorders
A group of disorders of memory, orientation, level of consciousness, or executive functioning
Dementia
Gradual loss of intellectual ability without impairment of consciousness
Alzheimer's Disease
A dementia characterized by prominent memory loss and word-finding difficulty w/o motor impairment. Late behavioral changes.
Pathological bases for AD
Cortical atrophy (esp parahippocampal) w/ hydrocephalus ex vacuo. EC beta-amyloid plaques and cytoplasmic neurofibrillary tangles of tau protein. **tau distribution correlates w/ dz severity.
Apolipoprotein E (apo E)
Protein involved in cholesterol metabolism whose allele (E4) is associated with increased risk of AD.
Amyloid Precursor Protein (APP)
Large protein from which B-amyloid is derived- mutation associated with early-onset AD. Found on Chrom 21.
Presenilin
Gene associated with early onset AD; found on Chrom 14
Making the dx: AD
Clinical dx. Brain Imaging, Test to r/o B12, folate, TSH, urine drug screen
Vascular Dementia
Dementia caused by many small brain infarctions. Stepwise pattern of decline, with sudden onset or increases in symptoms. Focal neurologic signs common
Lewy Body Dementia
Dementia characterized by fluctuating cognition, hallucinations and Parkinsonian movement disorders.
Lew Body path
Intracytoplasmic alpha-synuclein inclusions in a small # of neurons, mainly in the cingulate cortex.
Pick Disease
Type of frontemporal lobar degeneration characterized by loss of frontal executive function and early disruptive and inappropriate behavior
Pick Disease path
Frontotemporal atrophy. Pick Bodies seen in remaining neurons -- cytoplasmic inclusions made up of tau proteins.
HIV Dementia
Dementia caused by direct brain infection by the virus and resulting atrophy and demyelination. An ominous prognostic sign.
Amnestic Disorder
Memory loss without other cognitive impairments
Pseudodementia
Dementia-like manifestation of depression in the elderly. Treatable.
Classes of drugs used for dementia
Cholinesterase Inhibitors, Glutamatergic Antagonists
Cholinesterase Inhibitors
Block breakdown of CNS synaptic Ach, prolonging its effects. Donepezil, Rivastigmine, Galantamine
Donepezil
Centrally acting cholinesterase-inhibitor used for all stages of dementia
Rivastigmine
Centrally acting cholinesterase-inhibitor used for mild/moderate AD, Parkinson's dz dementia
Galantamine
Centrally acting cholinesterase-inhibitor used to treat mild/moderate dementia
Primary side effects of central cholinesterase inhibitors
NVD, anorexia
secondary side effects of central cholinesterase inhibitors
insomnia, vivid dreams, bradycardia, syncope
Glutamatergic Antagonists
antagonize NMDA receptor, relieving excitotoxicity. Memantine
Memantine
Glutamatergic Antagonist used to treat moderate/severe AD
Memantine side effects
headache, constipation, agitation
Memantine drug interactions
decreases metabolism of buproprion, trihexyphenidyl.
Delirium
A syndrome of waxing and waning impairment of consciousness. Often oriented to person, inattentive. Can progress to dementia/death.
What can cause delirium
Acute illness, substance abuse/withdrawal, fever, post-op, anticholinergic meds, pain, dehydration, polypharmacy
Delirium Tremens
Alcohol withdrawal delirium, usually on 3rd day of withdrawal in pts who drank heavily 5+ years. 20% mortality.
Prevention strategies
Keep pt oriented, cognitively stimulated, nonpharmacologic sleep aids for pts w/ insomnia,
keep pt mobile, don't use restraints, visual/hearing aids, avoid dehydration.
Treating delirium
treat underlying cause, orient pt, neuroleptic meds like haloperidol, or a benzo
Neurodegenerative Disease
Disorder involving death of functionally related neurons
alpha synuclein
the abnormal protein seen in Lewy Bodies
beta amyloid
the abnormal protein in senile plaques
Lewy Bodies
abnormal cellular inclusions made up of alpha synuclein and associated with Parkinson's Disease and Lewy Body Dementia. **halo