3 Neurological assessment b Flashcards
ASSESSING CONSCIOUSNESS AND COGNITION
Mental status: Orientation Intellectual function Thought content Level of consciousness
Mental status:
observe patients appearance and behaviour, noting dress,
grooming and personal hygiene. Posture, gestures, movements, facial
expressions and motor activity provide important information.
Orientation
to time, place and person.
Intellectual function
the capacity to interpret well-known proverb tests or to
count backwards from 100.
Thought content
are thoughts spontaneous, natural, clear, relevant and
coherent?
Level of consciousness
level of wakefulness and ability to respond to the
environment. The level of consciousness is the most sensitive indicator of
neurological function.
LEVEL OF CONSCIOUSNESS
glasgow coma scale
Avpu( alert, voice,pain , unresponsive)
MOTOR ASSESSMENT
Assessment of muscle size, tone and strength, coordination and balance.
Test muscle strength against a resistance, using a 0 ‐ 5 scale, with 0 = no
movement and 5 = strong muscle strength. Muscle strength should be equal
bilaterally.
Abnormal muscle tone findings can include
Limited range of motion
Pain on motion
Decreased resistance (flaccidity) or increased resistance (rigidity), or spasticity
Involuntary Movements:
Tics, tremors, and fasciculation (involuntary contraction of a muscle) are all
examples of abnormal involuntary movements
GERONTOLOGICAL CONSIDERATIONS
Important to distinguish normal ageing changes from
abnormal changes
Determine previous mental status for comparison.
Assess mental status carefully to distinguish delirium
from dementia
Normal GERONTOLOGICAL changes may include
Losses in strength and agility; changes in gait,
posture and balance; slowed reaction times and
decreased reflexes; visual and hearing alterations;
deceased sense of taste and smell; dulling of tactile
sensations; changes in the perception of pain; and
decreased thermoregulatory
DIAGNOSTIC EVALUATION
Computed tomography(CT) Positron emission tomography (PET) Single photon emission computed tomography (SPECT) Magnetic resonance imaging (MRI) Cerebral angiography Myelography Non-invasive carotid flow studies Transcranial doppler Electroencephalography (EEG) Electromyography (EMG) Nerve conduction studies, evoked potential studies Lumbar puncture, and analysis of cerebrospinal fluid
Assessment of pupils
Unilateral dilated- nerve compression Bilateral dilated - midbrain injury Irregular- orbital trauma Conjugat gaze deviation- frontal lobe lesion Small/ pinpoint- opiate administration