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This is a test of specific
nerve roots. The upper profile (cervical
and extremities) usually includes C6, C7,
and C8 nerve roots. The lower profile (lumbar
and extremities) usually includes L4, L5,
and S1 nerve roots. This is a very valuable
diagnostic procedure for trauma patients
where one suspects radiculopathy. In most
trauma cases, the sensory nerves are affected
before the motor fibers, and a dermatosensory
study can aid in diagnosing an early radiculopathy.
DEPs aid in the evaluation
of:
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