RT Journal Article
SR Electronic
T1 Pulse-synchronous torsional nystagmus
JF Practical Neurology
JO Pract Neurol
FD BMJ Publishing Group Ltd
SP 445
OP 447
DO 10.1136/practneurol-2021-003027
VO 21
IS 5
A1 Milenkovic, Ivan
A1 Sycha, Thomas
A1 Berger-Sieczkowski, Evelyn
A1 Rommer, Paulus
A1 Czerny, Christian
A1 Wiest, Gerald
YR 2021
UL http://pn.bmj.com/content/21/5/445.abstract
AB Purely torsional spontaneous nystagmus almost always has a central vestibular cause. We describe a man with spontaneous pulse-synchronous torsional nystagmus in which the clockwise component corresponded to his pulse upswing, in keeping with a peripheral vestibular cause; following imaging we diagnosed left-sided superior canal dehiscence syndrome. Identifying pulse synchronicity of spontaneous nystagmus may help to distinguish central from peripheral vestibular torsional nystagmus, and is readily confirmed at the bedside using Frenzel’s glasses and a pulse oximeter.