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Basics of VNG Testing: An Introduction to Interacoustics VO425 FireWire VNG

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1.  Which of the following is not a position typically tested during positional testing?
  1. Head hanging
  2. Head turned to the right
  3. Supine
  4. Side turned to the right
2.  Which of the following can affect caloric test results?
  1. Patient's head position
  2. Presence of middle ear pathology
  3. Inappropriate alerting of the patient
  4. All of the above
3.  Which parameter(s) are analyzed in saccades test results?
  1. Phase
  2. Symmetry
  3. Velocity
  4. All of the above
4.  An advantage of VNG testing is:
  1. Less noise in recordings when compared to ENG
  2. Ability to measure nystagmus with a slow phase velocity of less than 4 degrees/second
  3. A and B
  4. None of the above
5.  Which structure of the inner ear is being evaluated with the caloric test?
  1. Anterior semicircular canal
  2. Lateral semicircular canal
  3. Saccule
  4. Posterior semicircular canal
6.  It is important to perform a full-field optokinetic evaluation because:
  1. It is more comfortable for the patient
  2. A full-filed stimulus is less likely to invoke nausea for patients with motion intolerance
  3. It is the only stimulus that will invoke a reflexive optokinetic response
  4. None of the above
7.  All of the following are methods that can be used to improve crosshair pupil tracking during VNG recordings except:
  1. Instructing the patient to look downward
  2. Manual adjustment of the threshold
  3. Adjusting the brightness of the IR light
  4. Switching from circular to elliptical pupil tracking algorithm
8.  Which of the following tests is the most sensitive for identifying a central pathology?
  1. Positional test
  2. Saccades test
  3. Dix-Hallpike test
  4. Caloric test
9.  Ice water calorics should be performed when:
  1. Standard caloric irrigations fail to provoke a response
  2. The patient has a hyperactive response to standard caloric irrigations
  3. The patient has a TM perforation
  4. All of the above
10.  A VNG evaluation can be used for all of the following except:
  1. To preoperatively evaluate candidates for cochlear implantation
  2. To support diagnosis and help distinguish between peripheral vestibular lesions and CNS lesions.
  3. To diagnose Multiple Sclerosis (MS)
  4. None of the above