discogenic Posted March 6, 2013 http://www.medpagetoday.com/Cardiology/Strokes/37680 Sounds pretty useful, but obviously still in the early stages. Anyone familiar with this?
polarbebe Posted March 6, 2013 Very interesting. I am not familiar with this technology, nor have I ever tried or seen the horizontal head impulse test done in a clinical setting (only seen a few videos on Youtube). I have performed and worked with neurologists in the ED using Dix-Hallpike... with limited success (few neurologists attempt it), most just went by history and doing a complete neuro exam (checking for ataxia and to walk the patient). A study from Neurology showed that several patients with a positive horizontal head impulse test (hHIT) had a posterior circulation stroke. It appears, a positive hHIT does not rule out a vertebrobasilar CVA. "Forty-three subjects enrolled. One had an equivocal h-HIT. Patients with APV (acute vestibulopathy) had a positive h-HIT (n = 8/8, 100%). Most patients with stroke had a negative h-HIT (n = 31/34, 91%). However, contrary to conventional wisdom, three patients with stroke (9%) demonstrated a positive h-HIT (1 vestibulocerebellar, 1 pontocerebellar, 1 pontocerebello-labyrinthine stroke)." http://www.ncbi.nlm.nih.gov/pubmed/18541870
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