A Patient with a Complaint of Vertigo That Began 48

question 15

Multiple Choice

A patient with a complaint of vertigo that began 48 hours ago is presenting with horizontal eye movements with slow phases directed toward right side and quick phases directed toward the left side.The therapist is most likely observing:

• A)Gaze-evoked nystagmus due to a low tonic output on the left
• B)Positional nystagmus due damage to the vestibular nuclei
• C)Spontaneous nystagmus due to the low tonic output on the right
• D)Jerk nystagmus due to the a peripheral lesion on the right

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Definitions:

Nuclear Medicine

The use of radionuclides, or radioisotopes (radioactive elements or their compounds), to evaluate the bone, brain, lungs, kidneys, liver, pancreas, thyroid, and spleen; also known as radionuclide imaging.

Radioisotope

An atom with an unstable nucleus that emits radiation during its decay to a stable form.

Nonionizing Radiation

Radiation that has enough energy to move atoms around or make them vibrate, but not enough to ionize (remove charged particles such as electrons) atoms or molecules.

Radionuclide Imaging

A medical imaging technique using small amounts of radioactive material to diagnose or treat diseases.