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Twenty-seven patients had basal infarcts.Clinical findings included dysarthria(n=27),hemiparesis with upper extremity predominance(n=15), brachial nonparesis(n=4),and pathological laughing(n=3).fifteen patients had basal tegmental infarcts.Clinical findings presented with hemiparesis and horizontal gaze abnormalities,including abducens nerve palsy(n=1), internuclear ophthalmoplegia(INO)(n=5),horizontal gaze palsy(n=1),one-and- a-half syndrome(n=1),and superficial or proprioceptive sensory dysfunction (n=8).Seven patients had tegmental infarcts.Clinical findings included INO (n=1),horizontal gaze palsy(n=2),one-and-a-half syndrome(n=3)and sensory changes(n=2).On both admission and 60 days later,the RDS scores of the patients with upper pontine lesions were significantly better than those with lower pontine lesions(P<.01).The RDS scores of the patients with basal tegmental infarct in the upper pons were significantly better than those with infarct in the lower pons.Paramedian pontine infarcts,which are usually due to thrombosis of perforating arteries,presented with a faciobrachial dominant hemiparesis with dysarthria,somatosensory disturbance,and horizontal gaze abnormalities.The favorable outcome may be related to the level of the pontine lesion,which influences the effect on the corticospinal tract. |
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brainstem,infarction of
disability rating scale,neurological
disability,neurological
dysarthria
eye movement,disorders of
gaze palsy
gaze palsy,horizontal
hemiparesis
internuclear ophthalmoplegia
laughing,pathologic
monoparesis
MRI
MRI,abnormal
neurologic signs
neuroophthalmology
ocular bobbing
pons,infarction of
prognosis
review article
skew deviation
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