the diagnostic accuracy of truncal ataxia and hints as cardinal signs for acute vestibular syndrome
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2016
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Abstract
The head impulse, nystagmus type, test of skew (HINTS) protocol set a new paradigm to differentiate peripheral vestibular disease from stroke in patients with acute vestibular syndrome (AVS). The relationship between degree of truncal ataxia and stroke has not been systematically studied in patients with AVS. We studied a group of 114 patients who were admitted to a General Hospital due to AVS, 72 of them with vestibular neuritis (based on positive head impulse, abnormal caloric tests and negative MRI), and the rest with Stroke: 32 in the PICA territory (positive HINTS findings, positive MRI) and 10 in the AICA territory (variable findings and grade 3 Ataxia, positive MRI). Truncal ataxia was measured by independent observers as grade 1, mild to moderate imbalance with walking independently; grade 2, severe imbalance with standing, but cannot walk without support; and grade 3, falling at upright posture.When we applied the HINTS protocol to our sample, we obtained 100% sensitivity and 94.4% specificity, similar to previously published findings. Only those patients with stroke presented with grade 3 ataxia. Of those with grade 2 ataxia (n = 38), 11 had cerebellar stroke and 28 had vestibular neuritis, not related to the patient's age. Grade 2-3 ataxia was 92.9% sensitive and 61.1% specific to detect AICA/PICA stroke in patients with AVS, with 100% sensitivity to detect AICA stroke. In turn, two signs (nystagmus of central origin and grade 2-3 Ataxia) had 100% sensitivity and 61.1% specificity. Ataxia is less sensitive than HINTS but much easier to evaluate.
| Reference Key |
carmona2016frontiersthe
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| Authors | ;Sergio Carmona;Carlos Martínez;Guillermo Zalazar;Marcela Moro;Angel Batuecas-Caletrio;Leonel Luis;Leonel Luis;Carlos R. Gordon |
| Journal | journal of photochemistry and photobiology a: chemistry |
| Year | 2016 |
| DOI |
10.3389/fneur.2016.00125
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| URL | |
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