Daily Bolus of LR: Cranial Nerve Exam 2-6

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June 23, 2011 by dailybolusoflr

Cranial Nerve Exam

 

Have you ever clicked the template button of “CN 2-12 intact”?

 

If so, you are attesting the fact that you have indeed examined ALL of those cranial nerves.

Let’s recap on how to do this for nerves 2 through 6.  Tomorrow, we will go over 7 through 12.

 

CN 2- OPTIC Nerve

Can be tested in 5 ways:

·         Acuity (snellen)

·         Color (not typically ED check)

·         Fields (should involve check with both one side, as well as both sides at the same time.  Visual inattention can be tested by moving both fingers at the same time and checking the patient identifies this.

·         Reflexes (Pupil exam)

·         Fundoscopy

 

CN 3- OCULOMOTOR Nerve

CN 4- TROCHLEAR Nerve

CN 6- ABDUCENTS Nerve

·         These nerves are all checked with extra ocular movements.

 

CN 5- TRIGEMINAL Nerve

·         Supplies sensation to the face and motor supply to the muscles of mastication.

·         Sensation can be checked in three places:

o   the jaw line

o   the cheek

o   the forehead

·         The corneal reflex is also from this nerve

o   Touching the cornea with the cotton wool should cause the patient to shut their eyelids

·         Motor can be checked by asking the patient to clench their teeth together and observing/feeling the masseter and temporalis muscles

 

Ref: Bates Physical Diagnosis

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