Module 5 Flashcards
Confusion
not a disease process or disease state but rather a symptom. Confusion is an inability to think quickly or coherently
usually demonstrated by inappropriate reactions to environmental stimuli, may arise suddenly or gradually, and may be either temporary or irreversible. Stressful events, lack of sleep or food, or sensory deprivation may precipitate confusion. Age no reliable factor
Dementia
is a decline in mental functioning, affecting memory, cognition, language, and personality
persistent or more severe confusion, with or without psychomotor hyperactivity characterized by a significant time span between symptom appearance and death
Cognitive impairment
refers to a decline in at least one of the following cognitive domains: language, executive function, attention, perceptual-motor function, social cognition, learning, and memory. The disturbance must interfere with independence in everyday activities and not be better accounted for by another neurocognitive disorder
Treatment of dementia- pharm
NMDA receptor agonist (memantine) and cholinesterase inhbitors (donepezil, rivastigmine)
most useful for moderate to severe AD, combo is more effective
non pharm tx of dementia
cognitive rehab
exercise
occupational therapy
recommended psychotic for dementia
risperidone, only used for 3 months
delirium
acute, abrupt onset
confusion fluctuates throughout day
inattention
once the cause is corrected, should return to previous state of cognitive functioning
metabolic disturbance/ confusion
fluid, electrolyte and acid base imbalance may b result of metabolic problems, which can produce confusion
dehydration
infectious process/ confusion
confusion may be result of infectious process that can cause extensive tissue and organ impairment, ischemia produces cell injury
Dizziness
is the sensation of unsteadiness or feeling off balance, faintness, light-headedness, and a feeling of movement within the head. Loss of consciousness rarely occurs, but the feeling of faintness encourages the patient to lie down, which may cause the feelings to disappear
brief episodes, result of inadequate blood flow and oxygen supply to brain
Vertigo
is the false sensation of rotation or movement of the patient or the patient’s surroundings. Vertigo may result from an inner ear disease or a disturbance of the vestibular center or pathway in the central nervous system (CNS).
Diagnoses of dizziness- 4 categories
peripheral vestibular disease
systemic disorders
CNS disorders
anxiety states
Questions to ask regarding dizziness
duration
severity
nature of episodes
associated symptoms
physical exam dizziness
exam ear (r/o cerumen)
whisper test
rinne and weber
thorough neuro assessment
Hallpike maneuver
The Hallpike maneuver
is performed by rotating the patient’s head to one side and then lowering it slowly to 30 degrees below the bodyline. The patient should be observed for nystagmus during head rotation and vertical positioning.
In patients with benign vertigo, there may be rotational nystagmus and possible severe vertigo, which usually occurs in one direction. This resolves quickly and cannot be reproduced after two to three repetitions.
The clinician should suspect a central lesion when the vertical nystagmus is of a longer duration and continues with each repetition
peripheral vestibular disease dizziness
Most often the problem is located in the labyrinth of the middle ear
dizziness, nausea and vomiting, diaphoresis, difficulty with balance, vertigo, tinnitus, fluctuating hearing loss, feelings of pressure in the ear, and diplopia
tx vertigo
meclizine or promethazine most common- suppress vestibular end organ receptors, inhibit vagal response
take med x1 week, then taper down
diamox
is used to decrease edema in the labyrinth
vertigo exercise
instructed to reproduce the feelings of vertigo by placing the affected ear down, then assume a supine position and hold that position until the vertigo disappears. The vertigo may return when the patient sits up. The patient should repeat these maneuvers at least five times a day or until the vertigo no longer returns. Patients with persistent symptoms should be referred for assessment of nerve function.
systemic disorder dizziness
aggravated by postural changes or exertion. Pallor, dyspnea, tachycardia, bounding pulse, weakness, hypotension, blurred vision, decreased breath sounds, headache, diaphoresis, and agitation suggest systemic problems
percentage of HA without cause
90%
types of primary headaches
tension-type headaches, migraines, and cluster headaches
Tension-type headache
, also referred to as a muscle contraction headache, presents as a mild to moderate bilateral, nonpulsating, tightening pain that is not aggravated by routine physical activity. It is usually not accompanied by nausea and vomiting or photophobia.
Migraine headache
may last for 4 to 72 hours and may or may not be precipitated by an aura. It is usually unilateral, of moderate to severe intensity with a pulsating quality, aggravated by routine physical activity, and accompanied by nausea, vomiting, and photophobia.