NCS Peripheral Nerve/Spinal Nerve

Question 1

which of the following is the most mild nerve injury
a. neurapraxia
b. axonotmesis
c. neurotmesis

Answer 1

a. neurapraxia

Question 2

what is the rate of axonal regeneration

Answer 2

1mm per day (1in per month)

Question 3

what structures are involved with first degree peripheral nerve injury aka neurapraxia
a. myelin
b. myelin and axon
c. myelin, axon, endoneurium
d. myelin, axon, endoneurium, perineurium
e. myeline, axon, endoneurium, perineurium, epineurium

Answer 3

a. myelin

Question 4

what structures are involved with second degree peripheral nerve injury aka axontomesis
a. myelin
b. myelin and axon
c. myelin, axon, endoneurium
d. myelin, axon, endoneurium, perineurium
e. myeline, axon, endoneurium, perineurium, epineurium

Answer 4

b. myeline and axon

Question 5

what structures are involved with third degree peripheral nerve injury aka axonotmesis
a. myelin
b. myelin and axon
c. myelin, axon, endoneurium
d. myelin, axon, endoneurium, perineurium
e. myeline, axon, endoneurium, perineurium, epineurium

Answer 5

c. myelin, axon, endoneurium

Question 6

what structures are involved with fourth degree peripheral nerve injury aka neurotmesis
a. myelin
b. myelin and axon
c. myelin, axon, endoneurium
d. myelin, axon, endoneurium, perineurium
e. myelin, axon, endoneurium, perineurium, epineurium

Answer 6

d. myelin, axon, endoneurium, perineurium

Question 7

what structures are involved with fifth degree peripheral nerve injury aka neurotmesis
a. myelin
b. myelin and axon
c. myelin, axon, endoneurium
d. myelin, axon, endoneurium, perineurium
e. myelin, axon, endoneurium, perineurium, epineurium

Answer 7

e. myelin, axon, endoneurium, perineurium, epineurium

Question 8

your patient presents following peripheral nerve injury. their symptoms resolve in 10 days. this likely means they had what type of nerve injury
a. neurapraxia
b. axonotmesis
c. neurotmesis

Answer 8

a. neurapraxia

Question 9

your patient presents following peripheral nerve injury. their symptoms resolve in 1 month. this likely means they had what type of nerve injury
a. neurapraxia
b. axonotmesis
c. neurotmesis

Answer 9

b. axonotmesis

Question 10

your patient presents following peripheral nerve injury. their script says neurotmesis. in terms of prognosis, you know they
a. will recover in days to weeks
b. will recover in weeks to months
c. will need surgery for recovery

Answer 10

c. will need surgery for recovery

Question 11

your patient presents for wrist weakness without sensory loss following moving furniture and letting the furniture rest on her forearms. she has 3/5 strength at IE and at d/c 6 weeks later she has 5/5 strength. what type of nerve injury is this
a. neurapraxia
b. axonotmesis
c. neurotmesis

Answer 11

a. neurapraxia
while this recover seems longer than days to weeks, she demonstrates full recovery where axonotmesis may have residual impairments

Question 12

proprioception and vibration sense as well as motor nerves and muscle spindle nerves are what type of nerve
a. large myelinated
b. small myelinated
c. small unmyelinated

Answer 12

a. large myelinated

Question 13

pain/temperature, pin prick sensation are what type of nerve
a. large myelinated
b. small myelinated
c. small unmyelinated

Answer 13

c. small unmyelinated

Question 14

autonomic and non proprioceptive sensation (LT) are what type of nerve
a. large myelinated
b. small myelinated
c. small unmyelinated

Answer 14

b. small myelinated

Question 15

which 2 cranial nerves are considered an extension of the CNS rather than peripheral nerves
a. olfactory and optic
b. trochlear and abducens
c. glossopharyngeal and vagus
d. vagus and accessory

Answer 15

a. olfactory and optic

Question 16

your patient presents for wrist weakness, sensory loss, and now onset of atrophy. she has 2+/5 strength at IE and at d/c 8 weeks later she has 3+/5 strength. what type of nerve injury is this
a. neurapraxia
b. axonotmesis
c. neurotmesis

Answer 16

b. axonotmesis
as motor and sensory deficits, atrophy demonstrating failure of conduction, and there was partial recovery not full

Question 17

patient presents for balance training with reduced pin prick accuracy and reduced thermal sensation in distal LE. their reflexes and strength is normal. they likely have neuropathy of what type of fiber
a. large fiber
b. small fiber myelinated
c. small fiber unmyelinated

Answer 17

b. small fiber myelinated

Question 18

true or false: The neural pathways that conduct information from light touch receptors and proprioceptors are the same neural pathways that conduct the stimulus applied with the 5.07/10g monofilament.

Answer 18

true

Question 19

true or false: TENS is helpful for pain relief in peripheral neuropathy

Answer 19

true

Question 20

your patient is considering using TENS for painful peripheral neuropathic pain. what should their HEP be?

Answer 20

30min a day for 4 weeks

Question 21

what should the HEP exercise prescription for aerobic training for peripheral neuropathy management

Answer 21

10-20min 60-85% HRmax at least 3 times a week

Question 22

true or false: it will take several years of uncontrolled hyperglycemia for persons with T1 DM vs only a few years in T2

Answer 22

true

Question 23

patient presents for balance training with impaired vibration sense in distal LE, impaired reflexes, and muscle wasting
they likely have neuropathy of what type of fiber
a. large fiber
b. small fiber myelinated
c. small fiber unmyelinated

Answer 23

a. large fiber

Question 24

true or false: there is evidence to support that aerobic exercise improves NCV and vibratory sense

Answer 24

true