Pagnini P, Nuti D, Vannucchi P
Service of Audiology, University of Florence, Italy.
ORL J Otorhinolaryngol Relat Spec. 1989;51(3):161-70. doi: 10.1159/000276052.
Over a period of 4 years we observed 15 cases of benign positional vertigo (BPV) probably caused by deposition of otoliths in the horizontal semicircular canal. Rapid rolling onto one side in recumbent position provokes a paroxysmal, purely horizontal and geotropic nystagmus which nearly always spontaneously inverts direction. Rolling the patient onto the other side provokes a left intense geotropic nystagmus. BPV is more violent but resolves more rapidly than that of the better known posterior canal positional vertigo. Sometimes both syndromes are present together.
在4年的时间里，我们观察到15例良性阵发性位置性眩晕（BPV），可能是由耳石沉积在水平半规管引起的。卧位时快速向一侧翻滚会引发阵发性、纯水平且向地性的眼球震颤，其方向几乎总是自发反转。将患者向另一侧翻滚会引发强烈的向左向地性眼球震颤。与更常见的后半规管位置性眩晕相比，BPV更剧烈，但恢复更快。有时两种综合征会同时出现。
