When a patient has a suspected vestibular disorder, the physician orders an electronystagmogra-phy test. Which instruction should the nurse include when educating the patient about this test?
a. Use tea or coffee on the morning of test.
b. Electrodes will be placed on the scalp.
c. Air will be blown into the external ear.
d. The patient should have nothing to eat or drink (NPO) 3 hours before the test.
D
Electronystagmography is used to detect vestibular lesions and requires a 3-hour period of NPO before the test. Coffee and tea should also be avoided before the test.
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