PNS Flashcards

(55 cards)

1
Q

what should your neuro ROS include?

A

headache
dizziness or vertigo
seizures, tremors, involuntary movements
weakness
numbness
fainting (syncope or near syncope)

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2
Q

3 most common PNS complaints?

A

pain, weakness, numbness/tingling

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3
Q

shoulder nerve levels

A

flexion/abduction C4-5

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4
Q

elbow nerve levels

A

flex = C5 (musculocutaneous n)
extend = C7 (radial)

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5
Q

wrist nerve levels

A

flexion = C7 (median, ulnar)
extend = C6 (radial)

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6
Q

finger nerve levels

A

flex (grip C8, median & ulnar)
(abduct T1 ulnar)

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7
Q

hip nerve levels

A

flex = L2-4 (femoral, L1-3 nerve roots)
extend = L5 (inferior gluteal)

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8
Q

knee nerve levels

A

flex = S1 (sciatic)
extend = L3 (femoral)

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9
Q

ankle nerve levels

A

dorsiflex L4 (deep peroneal)
plantarflex S1 (tibial)

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10
Q

toe nerve levels

A

dorsiflex L5 (deep peroneal)

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11
Q

motor strength exam

A

0 = no movement
1 = muscle twitch without joint movement
2 = movement with gravity eliminated
3 = full strength against gravity only
4 = partial strength against resistance
5 = full strength against resistance

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12
Q

what must the sensory exam include?

A

dermatomal AND peripheral cutaneous

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13
Q

dysesthesia

A

all types of abnormal sensation including pain regardless of stimulant being present or not

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14
Q

paresthesia

A

mostly numb, tingling, pins & needles without pain or apparent stimulus

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15
Q

anesthesia

A

absence of sensation

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16
Q

hypesthesia or hypoesthesia

A

reduced sensitivity

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17
Q

hyperesthesia

A

increased sensitivity

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18
Q

hyperalgesia

A

significant pain in response to mildly painful stimulus

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19
Q

allodynia

A

non painful stimulus, perceived as painful on the skin

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20
Q

5 types of sensation

A
  1. pain
  2. temperature
  3. light touch
  4. proprioception (position)
  5. vibration
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21
Q

discriminative sensory exam

A
  1. stereognosis (identify object by feel)
  2. 2 point discrimination
  3. number identification
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22
Q

DTR levels

A

biceps C5-6
brachioradialis C5-6
triceps C6-7
Patellar L2-4
Achilles S1

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23
Q

grading of DTRs

A

0 = absent
1+ = diminished
2+ = normal/average
3+ = mildly over active
4+ = highly over active

24
Q

examples of common PNS pathology

A

ischemia, bleed, infection, mass, compression, nerve disorder, neuromuscular disorder, muscular disorder, idiopathic

25
UMN sign
-paralysis of movement, not muscle -atrophy from disuse, slight - spasticity, hypertonic -DTR increased (loss of superficial reflexes) -Babinski upgoing
26
LMN sign
- paralysis from muscle atrophy -wasting pronounced - flaccid, hypotonic (fasciculations may be present) - DTR low or absent
27
anterior horn lesion
polio, ALS -fasciculation & weakness in segmental path -sensation intact -weak DTR
28
spinal nerve root lesion
herniated disc -weakness then atrophy -dermatomal sensory changes -weak DTR
29
peripheral mononeuropathy (lesion)
carpal tunnel syndrome, Bell's Palsy -weakness in specific peripheral nerve distribution -sensory loss in corresponding nerve distribution -weak DTR
30
peripheral polyneuropathy
diabetes, alcoholic neuropathy -distal weakness -stocking glove distribution sensory loss -weak DTR
31
NMJ lesion
myasthenia gravis -muscular fatigability -sensation intact -DTR intact
32
muscular lesion
muscular dystrophy -weakness, usually in proximal muscles -sensation intact -DTR intact or possibly decreased
33
Adson's test
thoracic outlet syndrome -ext R, abduct & extend arm while palpating pt's radial pulse --if diminished = positive
34
Roo's test
thoracic outlet syndrome -arms at goal post, hold for 2 mins, if weak or numbness occur then positive
35
Erb's Palsy
C5-6 lesion leaves arm in waiter's tip position -upper brachial plexus injury
36
Klumpke's Palsy
C8-T1 palsy = claw hand position -lower brachial plexus injury
37
Long thoracic nerve injury
winging of scapula C5-7
38
Median nerve injury/lesion causes
-crush injury -pronator syndrome (pronator teres compressing nerve) -carpal tunnel syndrome (entrapment of medial nerve in tunnel) -wrist slashing -palm injury/laceration
39
ape hand deformity
median nerve injury -C5-6 & C8-T1 -actively attempting a fist & wasting of thenar eminence
40
tinel's sign
-hit wrist with reflex hammer, hitting median nerve, positive if pain or numb
41
phalen's test
reverse prayer, pain and numbness d/t median nerve
42
prayer test
put hands in prayer position, pain or numbness d/t median nerve
43
median nerve: anterior interosseous neuropathy
pinch grip = "ok" sign --can't perform
44
causes of ulnar n. injury/lesion
1. fx of humerus near medial epicondyle 2. cubital tunnel syndrome at elbow 3. laceration near wrist 4. entrapment at Guyon's canal
45
claw hand deformity
ulnar n injury C8-T1 can't straighten 4th & 5th digits
46
tinel's sign at elbow
"funny bone" hit with hammer, causes pain and pins at 4th & 5th digits
47
radial nerve injury causes
1. fx of humerus near radial groove 2. "saturday night palsy" -- compression by sleeping with arm under head
48
wrist drop
radial n injury C5-T1
49
sciatic n injury
-disc compression L4/L5 nerve roots -piriformis syndrome -posterior hip dislocation sciatica & steppage gait
50
superior gluteal n injury
-trauma -hip replacement surgery -following IM injection in butt *trendelenburg gait
51
lateral femoral cutaneous n injury
- compression at iliac crest (belt, seatbelt, large pannus) -numbness over lateral thigh
52
common fibular n injury
-impingement by piriformis -proximal fibular fx -stretched from varus stress (with LCL) -compressed by casting -surgery -paralysis of DF & everters, loss sensation anterolateral leg & dorsum of foot, *foot drop w/ high steppage gait & foot slap
53
superficial fibular/peroneal n injury
-proximal fibular fx -stretched with varus stress -compressed by casting -paralysis of foot everters -NO foot drop -loss sensation of anterolateral leg & dorsum of foot
54
deep fibular/peroneal n injury
-anterior compartment syndrome -anterior tarsal tunnel syndrome -pes cavus (high arch) -tight shoelaces or trauma -weak DFs, foot drop*
55
medial plantar n injury
-entrapment in longitudinal arch -Jogger's foot = valgus hindfoot & pes planus -aching pain in arch & burning/paresthesia in medial plantar surface