The subjects in this report included 17 surgical cases, who had evacuations of hematomas aided a BRW CT stereotaxic system approximately 14 days after the onset, and 11 non-surgical patients. The average age was 65.5 years for the operated group and 68.7 years for the non-surgical group. The neurological grades on admission were Grade III or above (slight or mild disturbance of consciousness). The evaluation of each case was based on (1) laterality of the hematoma on the left or right, (2) neurological grading, (3) maximum anterio-posterior, lateral diameters, and (4) maximum depth of the hematoma, CT classification (Kanaya, 1981) and ADL (5 grades) at 4.5 months after the onset. No correlation was found between ADL andd the laterality of the lesion in either group. As for the level I of consciousnesss and ADL on admission, 6/8 cases in the operaed and 3/8 in the non-operated group recovered to ADL grade 2 or above, and 2 bed-ridden cases were included in the non-operated group. In regard to the extent of the hematoma, the mean ADL was 1.83 in the operated group, and 2.75 in the non-operated group where the he-matoma was 25mm or less in its maximum anterio-posterior diameter. There existed a significant difference in ADL at IIb on the CT, and 4/5 of the operated and 1/4 of the non-operated group appeared to be ADL 2 or above. Assessment of the activities (mental change, willingness) as well as the muscle strength was performed within 3 days after surgery, and 88.2% and 35.3% improvements were observed, respectively, in the operated and non-operated groups. In conclusion, the cases in which the hematoma was relatively localized and consciousness was only slightly disturbed tended to respond well to surgical intervention as determined by ADL. One of the reasons for this seemed to be an early initiation of activity which leads to effective rehabilitation.
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