Athletic Training & Sports Medicine Center

 

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Cranial Nerve Assessment: VIII. Vestibulococlear (Auditory)

Examination type Neurological assessment
Patient & Body Segment Positioning Patient needs to be in a comfortable position, either sitting or standing.  Patient should have their eyes closed.

For the second part of this test, the patient should be standing with eyes open.

Examiner Position The examiner needs to be anterior to (in front of) the patient.

For the second part of this test, the examiner should be standing beside the patient  with arms ready to catch the patient if he should become unsteady.

Performing the Test

Ask the patient to identify sounds in each ear individually.  Examples of sounds to identify include fingers rubbing together, snapping fingers, or a ticking watch. 

For the second part of the test, ask the patient to balance first on one foot with eyes open, then on the other foot with eyes open.

Tissues Being Tested Integrity of cranial nerve VIII (vestibulococlear)
Positive Test Inability to recognize sounds or diminished hearing ability in first part of test, or unsteadiness/inability to balance in second part of test; both indicate the need for medical consultation
Interpretation Intracranial involvement
Common errors in performing exam Forgetting to test both hearing and balance; not spotting the athlete during the balance portion of the test
Factors possibly resulting in misinterpretation Make sure that the athlete understands what you are doing when performing the test
Related tests Romberg’s test & walking in tandem
References Booher M. James. Athletic Injury Assessment. 4th edition. McGraw Higher Education 2000
Links:

http://www.meddean.luc.edu/lumen/MedEd/GrossAnatomy/h_n/cn/cn1/cn5.htm

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