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)
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