Positional Testing in Acute Vestibular Syndrome: A Transversal and Longitudinal Study

The use of positional testing as a diagnostic tool is not usually indicated in the assessment of patients with acute vestibular syndrome. We sought to evaluate the clinical utility of positional testing (ie. focusing on positional modulation of spontaneous nystagmus and incidence of central positional paroxysmal nystagmus [CPPN]) inpatients with peripheral and central acute vestibular syndrome (pAVS, cAVS, respectively).