Exam Preview for 36813: Quick Guide to VNG Interpretation June 22,

Quick Guide to VNG Interpretation

Please note: exam questions are subject to change.

1. The purpose of VNG testing is: To identify possible sites of lesion for balance disorders To use eye movements for assessing visual and vestibular responses to different stimuli To be utilized as part of a comprehensive balance assessment All of the above
2. What is the role of the brain in the balance system? As one of the three major body senses that keep us balanced As integrator and coordinator As an observer of balance activity None of the above
3. What is the difference between spontaneous nystagmus and positional nystagmus? Spontaneous nystagmus beats in the same direction at the same amplitude in each position; positional nystagmus changes in direction and/or amplitude in different positions Spontaneous nystagmus increases in intensity when vision is denied; positional nystagmus decreases in intensity when vision is denied Spontaneous nystagmus is commonly seen in patients with central lesions; positional nystamus is commonly seen in patients with peripheral lesions Spontaneous nystagmus is more fun to say than positional nystagmus
4. A unilateral weakness finding from the bithermal caloric testing indicates: A central lesion A peripheral lesion A non-localizing lesion All of the above
5. What should you do if you find a bilateral weakness in response to bithermal caloric stimulation? Ask the patient to come back in six months Rule out the possibility of technical errors Rule out the possibility of a tracking abnormality Do another four irrigations