Abnormal Head Impulse Test in a Unilateral Cerebellar Lesion
Journal of Clinical Neurology
;
: 279-282, 2015.
Artículo
en Inglés
| WPRIM
| ID: wpr-96074
ABSTRACT
BACKGROUND:
The findings of head impulse tests (HIT) are usually normal in cerebellar lesions. CASE REPORT A 46-year-old male presented with progressive dizziness and imbalance of 3 weeks duration. The patient exhibited catch-up saccades during bedside horizontal HIT to either side, which was more evident during the rightward HIT. However, results of bithermal caloric tests and rotatory chair test were normal. MRI revealed a lesion in the inferior cerebellum near the flocculus.CONCLUSIONS:
This case provides additional evidence that damage to the flocculus or its connections may impair the vestibulo-ocular reflex only during high-speed stimuli, especially when the stimuli are applied to the contralesional side. By observing accompanying cerebellar signs, the abnormal HIT findings caused by a cerebellar disorder can be distinguished from those produced by peripheral vestibular disorders.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Movimientos Sacádicos
/
Reflejo Vestibuloocular
/
Pruebas Calóricas
/
Imagen por Resonancia Magnética
/
Enfermedades Cerebelosas
/
Cerebelo
/
Vértigo
/
Mareo
/
Prueba de Impulso Cefálico
Límite:
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Journal of Clinical Neurology
Año:
2015
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS