Neuro Flashcards
Dysdiadocokinesia
inability to perform rapid alternating movements
indicative of cerebellum involvement
Dysmetria
decreased ability to judge distance
impaired with
Dysarthria
motor deficit of muscles of speech and breathing
WC management for high cervical tetraplegia
Dependent
Anterior cord syndrome
Bilateral loss of lateral corticospinal tracts (motor) and spinothalamic tract (pain and temp)
Proprioception and vibration intact (DCML)
Common MOI anterior cord syndrome
Cervical hyperflexion
Brown Sequard Syndrome
Ipsilateral loss of motor (lateral corticospinal) and propricoception/vibration (DCML)
Contralateral loss of pain, temp (lateral spinothalamic) crude touch (anterior spinothalamic)
MOI for central cord syndrome
Cervical hyperextension
Posterior cord syndrome
Bilateral loss of DCML (proprioception, vibration, 2 point discrimination)
Motor function (lateral corticospinal) and pain/temp/light touch (lateral spinothalamic) preserved
Dermatome C5
Anterolateral shoulder
Dermatome C6
anterior arm, thumb, index finger
Dermatome C7
Middle finger
Dermatome C8
Medial arm and forearm + little finger
Brachial plexus arises from
C5-T1
With posteriorly herniated discs, the affected nerve root is above/below the vertebral segment
Below
ex. L4/L5 posterior herniation = L5 impairments
With lateral/posterolateral herniated discs, the affected nerve root is above/below the vertebral segment
above
ex. L4/L5 disc = L4 impairments
Thoracic dermatome landmarks:
T4
T6
T10
T12
T4- nipples
T6- xiphoid process
T10- umbillicus
T12- pubis
Dermatome L1
greater trochanter, over inguinal/groin
Dermatome L2
Anterior thigh to knee
Dermatome L3
Anterior thigh to medial knee/lower leg
Dermatome L4
Patella to medial malleolus to big toe
Dermatome L5
Lateral leg (fibular head) and dorsum of foot (
Dermatome S1
Lateral 5th digit and plantar aspect of foot
C1/2 myotome
cervical flexion/extension/rotation
C3 myotome
cervical lateral flexion
C4 myotome
shoulder elevation (upper trap/levator)
C5 myotome
shoulder abduction (deltoid, supraspinatus)
elbow flexion (biceps)
C6 myotome
wrist extension (extensor carpi radialis)
C7 myotome
Elbow extension (triceps)
Wrist flexion (flexor carpi radialis)
C8 myotome
Thumb extension (EPL)
IP flexion (FDProfundus)
T1 myotome
Finger abduction (dorsal interossei)
L1-2 myotome
Hip flexion (iliopsoas)
L3 myotome
Knee extension (quads)
L4 myotome
Ankle dorsiflexion/inversion (TibA)
L5 myotome
Great toe extension (EHL)
S1 myotome
plantarflexion (gastroc)
eversion (peroneals)
S2 myotome
knee flexion (hamstrings)
S3-4 myotome
anal wink
SLR will test what myotomes
L1-4
(hip flexion + knee extension)
Walking on toes will test what myotomes
S1
Anterior spinothalamic tract
crude touch (general, non-discriminative touch) and pressure
Lateral spinothalamic tract
pain and temperature
Ascending sensory pathways
Spinothalamic tracts
DCML
Where is crude touch found vs fine touch
Crude (non-discriminative) - anterior spinothalamic
Fine (localization) - DCML
A delta fibers transmit …
sharp pain
C fibers transmit …
poor localized, dull pain
A-alpha fibers transmit …
motor and proprioception
LARGEST AND FASTEST
A-beta fibers transmit …
touch
these are faster than A delta which is why you rub your toe after you stump it
A-gamma fibers transmit
muscle spindles
Deep sensory receptors
posture, position sense, proprioception, muscle tone, and speed and direction of movement
Mechanoreceptors
detect touch such as vibration and pressure
Chemoreceptors
detect changes in chemical composition to regulate cardiovascular and respiratory functions
ex. taste buds, aortic buds
Thermoreceptors
nerve cell endings that regulate changes in body temperature
Dorsal horn =
sensory
Ventral horn =
motor
To be classified as a stroke, how long do symptoms have to last?
24 hours
Characteristics of L-sided stroke
cautious, careful
speech and language impairments including motor of speech or expressing (Brocas) and difficulty comprehending/utilizing cues (Wernickes area)
Characteristics of R-sided stroke
quick, impulsive, poor judgement
visual perceptual deficits (pushers)
difficulty with perception of emotions
Patient with L sided stroke will have difficulty with visual or verbal cues
verbal
Patient with right-sided stroke will have difficulty with visual or verbal cues
visual
due to visual-spatial deficits
best to approach with direct verbal cues
What is the best approach/cues for a patient with R R-sided stroke
direct verbal cues
What is the best approach/cues for a patient with L-sided stroke
body language, hand gestures, facial expressions
MCA stroke deficits
UE>LE
contralateral motor and sensory loss
aphasia if dominant hemisphere impacted
ACA stroke deficits
LE>UE
contralateral motor and sensory loss
PCA stroke deficits
contralateral homonymous hemianopsia (loss of visual field of each eye)
contralateral sensory loss
involuntary movements (chorea, athetosis, hemiballism, tremor) - PCA affects more the cerebellum
Bells Palsy vs Trigeminal neuralgia differential
Trigeminal neuralgia
-painful
-decreased sensation in CN V distribution (forehead, cheek, maxilla)
-weakness of temporalis and masseter muscles
?
-exacerbated with stress or cold, better with relaxation
Bells palsy
-compression of the facial nerve in temporal bone
- deficits include anterior taste 2/3 tongue, ipsilateral weakness of facial muscles (frontalis, inability to smile, puff cheeks, raise eyebrows, close eye (orbicularis oculi))
-no pain, just paralysis
-Excessive tearing due to dry eye, loss of salivation control
-no sensory deficits
Triggers for trigeminal neuralgia
stress or cold
CVA vs Bells Palsy
CVA is quicker onset, typically only lower part of face is affected vs Bells palsy which is entire hemi paralysis
Brunnstrum stages of recovery
Stage 1- flaccidity, no volitional movement
Stage 2- emerging spasticity
Stage 3- peak spasticity, voluntary movement within synergy**
Stage 4- decreased spasticity, voluntary movement outside of synergy** or partial synergies
Stage 5- movement out of synergy and individual joints, but no coordination
Stage 6- near normal control, full spectrum of movements
Stage 7- normal
Stage 1 Brunnstrum
Flaccidity - initial phase of shock w/ no active movement or tone
Stage 2 Brunnstrum
Emergence of Spasticity - small involuntary movements occur + development of basic limb synergy pattern
Stage 3 Brunnstrum
peak spasticity, peak synergy
Voluntary movement within the synergy
basically the worst phase
Flexor synergy pattern UE
Scapula elevation and retraction
Shoulder abduction and ER
Elbow flexion
Wrist flexion and supination
Finger flexion/adduction
think about trying to scratch your own armpit
Stage 4 Brunnstrum
decline in spasticity, decline in synergy
Voluntary movement out of synergy
Stage 5 Brunnstrum
movement out of synergy , lack of coordination
Stage 6 Brunnstrum
near normal function
Stage 7 Brunnstrum
normal
Extensor synergy pattern UE
Scapula depression and protraction
Shoulder IR and adduction
Elbow extension
Wrist pronation and extension
Finger flexion/adduction