%0 Generic %A Y.E., Huh %A J.-W., Koo %A H., Lee %A J.-S., Kim %D 2012 %T Supplementary Material for: Head-Shaking Aids in the Diagnosis of Acute Audiovestibular Loss due to Anterior Inferior Cerebellar Artery Infarction %U https://karger.figshare.com/articles/dataset/Supplementary_Material_for_Head-Shaking_Aids_in_the_Diagnosis_of_Acute_Audiovestibular_Loss_due_to_Anterior_Inferior_Cerebellar_Artery_Infarction/5124340 %R 10.6084/m9.figshare.5124340.v1 %2 https://ndownloader.figshare.com/files/8710678 %2 https://ndownloader.figshare.com/files/8710681 %2 https://ndownloader.figshare.com/files/8710684 %2 https://ndownloader.figshare.com/files/8710687 %K Vertigo %K Nystagmus %K Anterior inferior cerebellar artery %K Vestibulopathy %K Stroke %X Objective: To determine the patterns and diagnostic value of head-shaking nystagmus (HSN) in patients with acute audiovestibular loss. Method: Eighteen patients underwent evaluation of spontaneous nystagmus, gaze-evoked nystagmus, HSN, head impulse test, ocular tilt reaction, subjective visual vertical, bithermal caloric tests, and pure-tone audiogram. The findings were compared with those of 21 patients with labyrinthitis. Results: Fifteen patients (83%) exhibited HSN, and the horizontal HSN usually beat contralesionally (10/14, 71%). However, 9 (50%) patients also showed patterns of central HSN that included perverted HSN (n = 7), HSN in the opposite direction of spontaneous nystagmus (n = 4), and HSN beating towards unilateral canal paresis or abnormal head impulse testing (n = 3). Overall, central HSN, gaze-evoked nystagmus, and normal head impulse testing were specific for anterior inferior cerebellar artery (AICA) infarction. Moreover, central HSN was the only sign that indicated stroke in 1 of our patients with isolated audiovestibular syndrome. Lesion subtraction analyses revealed that damage to the flocculus was relatively frequent in patients with perverted HSN. Conclusions: In AICA infarction, HSN was common with both peripheral and central patterns. Careful evaluation of HSN may provide clues for AICA infarction in patients with acute audiovestibular loss. %I Karger Publishers