NCS Spinal Cord Injury 2

Question 1

According to the ASIA Impairment Scale, an ASIA A classification indicates:

Accepted Answer

No sensory or motor function preserved in sacral segments S4-S5

Answer

ASIA A is a complete injury with no motor or sensory function preserved in the sacral segments S4-S5.

Question 2

The Zone of Partial Preservation (ZPP) is documented only in which ASIA classification?

Accepted Answer

ASIA A

Answer

ZPP applies only to ASIA A (complete) injuries, referring to dermatomes and myotomes below the neurological level that retain partial innervation.

Question 3

Which key muscle group is tested to determine a C6 motor level per ASIA standards?

Accepted Answer

Wrist extensors (ECRL, ECRB)

Answer

Wrist extensors (ECRL and ECRB) are the C6 key muscles in the ASIA standardized motor examination.

Question 4

Sacral sparing, which determines whether a spinal cord injury is complete or incomplete, requires preservation of:

Accepted Answer

Perianal sensation, voluntary anal contraction, or great toe flexion

Answer

Sacral sparing is confirmed by perianal sensation, voluntary anal sphincter contraction, or voluntary great toe flexion, indicating an incomplete injury.

Question 5

What distinguishes an ASIA C from an ASIA D incomplete spinal cord injury?

Accepted Answer

In ASIA C more than half of key muscles below NLI grade <3; in ASIA D more than half grade ≥3

Answer

ASIA C = more than half of key muscles below NLI grade less than 3; ASIA D = more than half grade ≥3 (antigravity or better).

(NCS) Neurologic Clinical Specialist Practice Test

(NCS) Neurologic Clinical Specialist Practice Test

NCS Spinal Cord Injury 2