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CHT exam prep – Nerve Questions and Answers
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CHT exam prep – Nerve Questions and Answers
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CHT exam prep – Nerve Questions and AnswersWhat are the early and late vasomotor changes post nerve injury? Correct Ans-- early: rosy
skin color and warm skin temp
- late: blotchy/blue and cool
What are the early and late sudomotor changes post nerve injury? Correct Ans-- early: dry
skin
- late: dry or overly moist
What are the early and late pilomotor changes post nerve injury? Correct Ans-- absent
early and late
What are the early and late trophic changes post nerve injury? Correct Ans-- early:
fingernail blemishes, longer/finer hair, slow healing, soft/smooth skin texture, slight soft
tissue atrophy
- late curved fingernails, longer/finer hair, slow rate of healing, smooth/nonelastic skin
texture, more pronounced (especially at finger pulps) soft tissue atrophy
What is a SETS procedure? Correct Ans-Supercharged end to side nerve repair.
UE myotomes: C4 Correct Ans-Resisted shoulder shrugs (upper traps)
UE myotomes: C5 Correct Ans-resisted shoulder abduction (deltoid)
, CHT exam prep – Nerve Questions and Answers
UE myotomes: C6 Correct Ans-resisted wrist extension, elbow flexion (ECRL/B, biceps)
UE myotomes: C7 Correct Ans-resisted wrist flexion, elbow extension (FCR, triceps)
UE myotomes: C8 Correct Ans-resisted thumb extension (EPL, FDS)
UE myotomes: T1 Correct Ans-finger abduction and adduction (interossei)
What is Duchenne sign? Correct Ans-- claw deformity of RF/SF
- low ulnar nerve palsy
- RF/SF MCP hyperextension due to pull of extrinsic extensors and absence/weakness of
intrinsics
- FDP weakness with high ulnar nerve palsy diminishes this posture
What is Andre Thomas sign? Correct Ans-- exaggerated claw deformity
- In attempt to straighten fingers wrist falls into flexion during action of extensors (tenodesis)
What is the crossed finger sign? Correct Ans-- weakness of interossei limiting ability of MF
to fully cross IF
- compare with uninvolved side
- claw of RF/SF becomes more defined when you cross MF over IF
, CHT exam prep – Nerve Questions and Answers
As nerve returns, what is the progression of return and what test would you perform to
assess? Correct Ans-- pain/temp test sharp/dull
- vibration 30 cps
- moving touch test moving light touch
- static touch test Semmes Weinstein
- vibration 256 cps
- localization of touch
- 2 point discrimination
- stereognosis
Semmes Weinstein 2.83 Correct Ans-Normal
Semmes Weinstein 3.22-3.61 Correct Ans-Diminished light touch (fair use of hand)
Semmes Weinstein 3.84-4.31 Correct Ans-Diminished protective sensation (drops things)
Semmes Weinstein 4.56-6.65 Correct Ans-Loss of protective sensation (no temperature)
Semmes Weinstein >6.65 Correct Ans-Untestable - deep pressure only
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