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We studied the correlations between the pattern of weakness,stroke type, topography,and etiology in 255 patients whose first stroke was manifested by isolated hemiparesis.They represented 14%of consecutively admitted stroke patients.The weakness distributions were as follows:face,upper limb,and lower limb(FUL)(50%);face and upper limb(FU)(29%);upper limb(U) (10%);and upper and lower limb(UL)(9%).Twenty-nine percent of the patients had dysarthria,which was of no localizing value.Less than one half of the patients had a deep infarct,and one third had a potential embolic source from the heart or large arteries.Logistic regression analysis showed that history of hypertension and type of weakness distribution were the main factors accounting for lesion localization;patients with FUL distribution and hypertension had a 90%probability of deep infarct;patients wither with FUL distribution but no hypertension or with UL distribution and hypertension each had 70%probability of deep infarct.Pure motor monoparesis was almost never caused by a deep infarct.We suggest that the assumption of a lacunar etiology to a pure motor stroke should be applied only to patients with FUL involvement. |
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CAT scan
CAT scan,abnormal
CAT scan,false negative
cerebrovascular accident
cerebrovascular accident,etiology
dysarthria
hemiparesis
hemiplegia
lacunar infarction
monoparesis
pure motor hemiplegia
pure motor stroke
review article
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