Medial medullary infarction: abnormal ocular motor findings.
case_series · Level IV
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- Record sourced from PubMed, PMID 16247061.
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Abstract
In 20 consecutive patients with isolated medial medullary infarction, abnormal ocular motor findings included nystagmus (n = 8), ocular contrapulsion (n = 5), and contralesional ocular tilt reaction (n = 2). The nystagmus was ipsilesional (n = 4), gaze-evoked (n = 5), upbeating (n = 4), and hemiseesaw (n = 1). The ocular motor abnormalities may be explained by involvements of the nucleus prepositus hypoglossi, medial longitudinal fasciculus or efferent fibers from the vestibular nuclei, climbing fibers, and cells of the paramedian tracts.
Medical subject headings
- Brain Stem Infarctions
- Medulla Oblongata
- Ocular Motility Disorders