Persistent Nystagmus in Chronic Phase of Lateral Medullary Infarction.

ABSTRACT:

Background and purpose

We aimed to determine the patterns and mechanisms of persistent nystagmus (PN) lasting >1 year in lateral medullary infarction (LMI).

Methods

We recruited 13 patients with PN due to LMI and another 13 with transient nystagmus (TN) (<1 year) as control. All patients underwent oculography, rotatory chair test, caloric test, bedside head impulse test, dizziness handicap inventory (DHI), and brain MRI.

Results

All patients had spontaneous, contralesional, horizontal-torsional nystagmus during the acute phase. Although two patients exhibited consistent contralesional torsional nystagmus, most patients (11/13, 85%) with PN evolved from the initial contralesional to ipsilesional nystagmus. During horizontal gaze, the patterns of ipsilesional PN were di

SUBMITTER: Lee TK 

PROVIDER: S-EPMC7174124 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature