Neurological System Flashcards
reflexes
deep tendon reflex, superficial or cutaneous reflex, pathological reflex
deep tendon reflex
elicited by tapping a tendon
superficial or cutaneous reflex
obtained by stimulating the skin
pathological reflex
usually present only in disease
reflex scale
0: no response 1+: low normal, slightly diminished 2+: normal 3+: more brisk than normal, not indicative of disease 4+: brisk, hyperactive, clonus
Biceps
palpate the biceps tendon in the antecubital fossa, place your thumb on the tendon, strike your thumb with the hammer
normal response: palpable flexion of the elbow
Triceps
flew elbow 90 degrees, strike tendon directly, just above the elbow
normal response: palpable extension of the elbow
Supinator or brachioradialis
strike tendon directly
1-2 inches above the wrist
expected response: flexion of the elbow and supination of the forearm
ASSESS BILATERALLY ALL REFLEXES
Knee
strike patellar tendon directly
normal response: leg extends and quads contract
Ankle
Slightly dorsiflex foot
strike achilles tendon directly
normal: plantar flexion
Babinski (plantar reflex)
cutaneous reflex
stroke sole on lateral edge and across ball of foot
normal: toes flex or remain still
abnormal: fanning of the toes, extension of great toe, may indicate a pyramidal tract lesion
relfex normal in infants < 1
assess motor coordination
gait: manner or style of walking
gait should me smooth, regular rhythm, symmetrical in stride lengths
abnormal gait could be intoxication, risk for injury, neuromuscular disorder
heel to toe: walk heel to toe in a straight line; this will exaggerate any unexpected finding in gait evaluation
assess muscle strength
upper and lower extremities
ask client to flex muscle and then resist when you apply opposing force
Muscle strength scale
0: no movement at all
1: Muscle contracts, but no movement
2: Extremity can move, but not against gravity
3: Full ROM against gravity, but not resistance
4: Full ROM against moderate resistance
5: Full ROM against gravity and resistance
Romberg Test
instruct client to stand, feet together, arms at sides, eyes open and then closed. be sure to protect from falling. slight swaying is normal. loss of balance is a positive test and indicates cerebellar ataxia or vestibular dysfunction
sensory system
patients eyes closed
loss of sensation may indicate spinal tract lesion
brain stem lesion
cerebral lesion
site tested: hands, lower arms, abdomen, feet and lower legs
peripheral neuropathy
loss of sensation with diabetes, alcohol, and vitamin b12 deficiency.
polyneuropathy
symmetrical sensory loss could indicate this
pain and light touch
alternate touching skin with sharp and dull. superficial pain: ask to identify sharp or dull and superficial touch: point to where it is
if not intact: temperature test- touch the skin, ask patient to tell you hot or col
Vibration
place tuning fork against bony prominences beginning at most distal joints. Sternum, shoulder, elbow, wrist, finger joints, ankle, toes, should be tested
client should tell when and where vibration is felt
a buzzing or tingling sensation should be felt
Position
test great toe of each foot and finger on each hand. flex or extend and they should tell you up or down and which toe is moving
discriminative sensation
tests assess cognitive ability to interpret sensations associated with coordination abilities. inability to perform may indicate a lesion
Stereognosis
act of recognizing objects on the basis of touching and manipulations.
tactile agnosia
inability to recognize objects by touch, may indicate parietal lobe lesion
graphesthesia
number identification
blunt end of a pen and trace numbers in there hand
point localization
dull object: touch client in various body parts. point to area touched
Brudzinski’s sign
supine position, place head under neck and flex the neck causing the clients chin to touch the sternum
note stiffness
note involuntary flexion of hips and knees- this indicates a positive sign for meningeal irratation
Kernig’s Sign
supine position, flex the leg at the knee and hip. Then attempt to straighten the leg keeping the hip flexed
note pain in lower back and resistance to straightening the leg at the knee
Meningeal signs
Negative Brudzinski’s and a positive Kernig’s consider disc disease