Positive Head Impulse test 3

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This man had vertigo and slight gait unsteadiness.
He had unidirectional nystagmus to the left, which lessened when looking to the right.
You can clearly see the positive head impulse test when his head is rotated to right.
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It was shot in a fluorescent room with a extra light pointed right at his face. I had a resident use his android phone to video it. If you find a 60 fps site, let me know. Thanks for the feedback!

PeterJohns
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I had this test done, was diagnosed with BVL unfortunately..

singstar
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Actually, I found when you are using the mandible, the head movement isn't as "crisp" and thus I hold onto the good old bony skull.

PeterJohns
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Does Frenzel goggles is ideally needed to observe eye movement in this test? I find it hard to observe either saccade or nystagmus, and because this test is pretty scary for most patients

VectoRaith
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What does it indicate when its positive ?

obaidaabdulrazzak