Cranial Nerve Clinical

Question 1

How to assess CN I?

Answer 1

Usually not assessed but would test by asking patient if they could smell a strong scent (toothpaste) under one nostril, then both nostrils

Question 2

What does bilateral loss of smell indicate?

Answer 2

Rhinitis, smoking, ageing

Question 3

What does unilateral loss of smell indicate?

Answer 3

Deviated septum or possible nerve lesion

Question 4

How to assess CNII?

Answer 4

Visual field test, peripheral vision. Snellenchart

Question 5

How to test CNIII, CNIV and CNVI?

Answer 5

H shape test, accomodation reflex (bring target close to nose), light reflex

Question 6

How is CN V tested?

Answer 6

Light touch, corneal reflex, palpation of muscles of mastication,, jaw jerk reflex

Question 7

CN VII test

Answer 7

Raise eyebrows, frown, close both eyes, scrunch face, smile, puff cheeks

Question 8

CNVIII test

Answer 8

whisper test, rinne and webers test

Question 9

CNIX and X test1

Answer 9

Gag response, uvula,

Question 10

CNXI test

Answer 10

Shrug shoulders, side of face

Question 11

CNXII test

Answer 11

Tongue movement, inspection of tongue and speech