LESSON 10 NEUROLOGICAL ASSESSMENT Flashcards
2 REGION OF NERVOUS SYSTEM
Central Nervous System (CNS)
Peripheral Nervous System (PNS)
Cerebrum consist of what ?
right and left hemispheres, frontal, parietal, occipital & temporal lobes
(thalamus and hypothalamus) body temp, sleep
Diancephalon
position sense, posture & equilibrium/balance
Cerebellum
(medulla oblongata, pons & midbrain) resp. & cardiac regulation, sneezing
Brain stem
somatic sensory center
Parietal
higher intellect, speech production, personality, behavior, emotions, voluntary movement
Frontal
hearing, memory, speech perception and translation
Temporal
Vision
Occipital
Consist of Cervical, thoracic, lumbar nerves
Spinal roots
Responsible for motor roots
anterior
responsible for sensory roots
posterior
damage to posterior roots
loss of sensation
damage to anterior roots
flaccid paralysis
External environmental information received and transmitted through?
Peripheral nervous system
number of spinal nerves in
Cervical
Thoracic
Lumbar
Sacral
Coccygeal
cervical 8 pairs C1-C8
Thoracic 12 pairs T1-T12
Lumbar 5 pairs L1-L5
Sacral 5 pairs S1-S5
Coccygeal 1 pair Coccyx
-Rapid involuntary predictable motor response to a stimulus.
-Reflex arc, is not dependent on the brain.
Reflex
Skeletal muscle contraction
Somatic
Cardiac, smooth muscle and glands
autonomic
Three basic types of neurologic examination
Screening neurologic exam
Complete neurologic exam – neurologic concerns
Neurologic recheck exam
consideration for assessment
Assess mental status first
Equipment
Eye charts, tuning fork, pen light, reflex hammer, key, buttons, coin, big safety pin
eye opening (GCS)
SPONTANEOUS 4
TO SOUND 3
TO PAIN 2
NEVER 1
motor response (GCS)
obeys command 6
localizes pain 5
normal flexion (withdrawal) 4
abnormal flexion 3
extension 2
none 1
verbal response
oriented 5
confused conversations 4
inappropriate words 3
incomprehensible sound 2
none 1
GCS is used to evaluate patients with
traumatic brain injury
altered mental status
GCS measures what categories
eye opening (e)
motor response (m)
verbal response (V)
formula for GCS score
e + v + m
GCS SCORE INTERPRETATION
13-15 MILD HEAD INJURY
12-9 MODERATE HEAD INJURY
BELOW 8 SEVERE HEAD INJURY
(mental status) Physical appearance, dress, grooming, hygiene
Appropriate for age, sex, culture, season, setting
(mental status) Behavior and affect, facial expression
Depressed, hostile, euphoric, fearful, flat/dull
third type of mental status
Assess thought content/process
speech language
Quality
Rate
Volume
Fluency – Abnormal patterns
difficulty/discomfort in talking (laryngeal disease)
aphonia/dysphonia
distorted speech sounds, may sound unintelligible, basic language intact
cerebellar dysarthria
a language disorder that affects how you communicate. It’s caused by damage in the area of the brain that controls language expression and comprehension.
Aphasia
can understand but can’t speak
Broca’s aphasia
absent/reduced speech and comprehension
global aphasia (expressive)
can’t understand but can speak
Wernicke’s aphasia (receptive)
Producing speech are of the brain (broca’s area)
frontal lobe
understanding and processing speech are of the brain (wernicke’s area)
temporal lobe
Perceptions
Illusions/delusions
Hallucinations
Ability to make a decision/judgment
Insight
Though process and perception
Ask to repeat 3-4 unrelated words (cognitivge abilities and mentation)
immediate memory
Ask who “I” am, last meal, last visitor (cognitive abilities and mentation)
recent memory
Ask the birthday, anniversary, last President, favorite President (cognitive abilities and mentation)
remote memory
Meaning of a proverb, simple math (cognitive abilities and mentation)
abstract reasoning and skills
Visual, auditory, tactile
interpretation of stimuli
cranial nerves type
ssmmbmbbsbbmm
some say marry money, but my big brother say big brain matter most
(abnormal flexion) Comatose posturing
Decorticate Rigidity
cranial nerves
OOOTTAFAGVAH
OFLACTORY, OPTIC, OCULOMOTOR, TROCHLEAR, TRIGEMINAL, ABDUCEN, FACIAL, ACOUSTIC (VESTIBULOCOCHLEAR), VAGUS, SPINAL ACCESSORY, HYPOGLOSSAL
(abnormal extension) Comatose posturing
Decerebrate Rigidity
(nonfunctional brain stem) Comatose posturing
Flaccid Quadriplegia
(meningeal irritation) Comatose posturing
Opisthotonos
is a term fora group of disorders that affect coordination, balance and speech. Any part of the body can be affected, but people with ataxia often have difficulties with: balance, walking, speaking.
neurological exam to test for balance and coordination
romberg’s test
is agait(method of walking or running) where the toes of the first foot touch the heel of the next one at each step.Neurologists sometimes ask patients to walk in a straight line using tandem gait as a test to help diagnoseataxia.
Tandem’s gait
stroke, immobile arm against body, stiff/extended leg, toe drag. it is a neuromuscular condition of spasticity that result in the muscle on one side of the body being in a constant state of contraction
spastic hemiparesis
loss of position sense, staggering, alcohol (barbiturate). it is a sudden, uncoordinated muscle movement due to disease or injury in to the cerebellum.
cerebellar ataxia
basal ganglia defects, stooped posture, trunk forward. it is a brain disorder that causes unintended or uncontrollable movements, such as shaking, stiffness and difficulty with balance and coordination
parkinsonian
it is a type of spastic paraparetic gait in which the muscle tone in the adductors is marked. it is charac
lower motor neuron defect. the inability to lift the foot while walking due to the weakness of muscles that cause dorsiflexion of the ankle joint. not a commonly seen condition
steppage/footdrop
weakness in hip girdle and upper thigh muscle. to make up for the weakness, you sway from side to side and your hip drops with each step. also called as MYOPATHIC GAIT
WADDLING
characterized by hypertonia and flexion in the legs, hips and pelvis accompanied by extreme adduction leading to the knees and thighs hitting, or sometimes even crossing, in a scissor-like movement
scissors
Muscle size, strength, tone bilaterally
Tremor differentiation
motor system
(also termed superficial sensation): receptors in skin and mucous membranes
Exteroceptive sensation
(also termed deep sensation): receptors located in muscles, tendons, ligaments and joints
Proprioceptive sensation
Client sitting
Eyes closed
“Say where you are touched.”
Compare bilaterally, and distally to proximally.
interpretative sensory functions that require analysis of individual sensory modalities by the parietal lobes to provide discrimination. Individual sensory modalities must be intact to measure cortical sensation.
interpretative sensory functions that require analysis of individual sensory modalities by the parietal lobes to provide discrimination. Individual sensory modalities must be intact to measure cortical sensation.
Close eyes
Place object in hand
“Identify object.”
Test bilaterally with different objects.
Note speed and accuracy
stereogenesis
Strike fork & start on most distal bony prominence & work medially with neuropathy
Ask when do you feel the vibration start and when do you feel the vibration stop.
vibratory sensation
inability to identify figure
agraphesthesia
unable to identify object
astereogenesis
Support the client’s forearm
Client’s arm flexed at 45-90 degree angle
Hold arm loosely
Strike tendon with a brisk wrist motion on top of your thumb
bicep reflex
Close eyes
Draw letter or number on hand
“Identify figure.”
Test bilaterally
Note speed and accuracy
graphesthesia (parietal lobe)
(reflex)
Grading scale 0-4+
Compare bilaterally
Biceps, brachioradialis, triceps, patellar, achilles
Deep tendon
commonly with clonus
4+ - Hyperactive
continued movement after stimulations removed
clonus
(reflex)
Abdominal
Plantar (Negative Babinski)
Cremasteric
Superficial
reflex charting
0 - absent
1- hypoactive
2-normal
3-active
4-hyperactive
Relaxed arm required.
extension of the forearm.
triceps reflex
is needed to conduct the impulses and the neurons of a newborn are not completely myelinated.
myelin
Stroke up the lateral side of the sole & across the ball of the foot to just below the great toe.
plantar reflex
Level of consciousness (LOC)
Motor function
Pupillary response
Vital signs
assess for increased intracranial pressure
newborn consideration occurs with CNS damage.
High-pitched, shrill cry (cat-like screech)
when something touches the baby’s palate, he will try to suck it
sucking
when infant is startled or feels like they are falling. infant will have a startled look and the arms will fling out sideways with the palms up and the thumbs flexed
moro
this reflex starts when the corner of the baby’s mouth is stroked or touched. the baby will turn or rotate his head and open his mouth to follow and root in the direction of the rooting
rooting
stroking the hand of the baby, causes the baby to close his fingers in grasp
palmar grasp
baby’s head turned to one side, the arm on that side stretches out and the opposite arm bends up at the elbow
tonic neck
occurs after the sole of the foot has been firmly stroked. the big toe then moves upward or toward the top surface of the foot
babinski