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Common Errors in ENG/VNG

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1.  The physical examination of eye movements demonstrates internuclear ophthalmoplegia. You should: record from one eye only. record from both eyes simultaneously. record from each eye independently. perform test with fixation only. perform test without fixation only.

2.  In laboratory conditions, nystagmus smaller than 2-3º/sec can not be recognized by: physical examination. ENG. VNG. either ENG or VNG. Frenzel goggles.

3.  If one of the four caloric irrigations is much weaker than the other three, you should: repeat the irrigation for that ear. repeat all four irrigations. irrigate that ear with ice water. reapply the electrodes. proceed with the rest of the test.

4.  Patients must be alerted during tests performed with fixation. True False

5.  Faulty calibration will cause the amplitude of the eye movements to be inaccurate in all of the subsequent subtests. True False