Posterior canal benign paroxysmal positional vertigo with long duration: Heavy or light cupula?

ABSTRACT:

Objective

To investigate the characteristics of positional nystagmus in posterior semicircular canal (PSCC) benign paroxysmal positional vertigo (BPPV) patients with longer durations, and to discuss the possible underlying mechanism of this nystagmus.

Methods

We conducted a retrospective review, and enrolled 118 consecutive patients with unilateral PSCC BPPV. The duration of nystagmus during a Dix-Hallpike test was classified into short (<1 min) and long (≥1 min) durations. For the identification of a neutral point in PSCC BPPV patients with long durations, the patient's head was turned 45° to the lesioned side to set the affected PSCC on the sagittal plane, and the disappearance of positional nystagmus was investigated in a pitch plane.

Results

Among 118 patients wit

SUBMITTER: Kim CH 

PROVIDER: S-EPMC10446259 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature