EEG changes 24 hours after myelography with XXXX .

@entity1 @entity6161
A prospective study of EEG changes following @entity6161 myelography was made on 34 @entity1 aged 17-79 years. EEGs were recorded just before and 22-26 hours after myelography. Usually 8-10 ml of @entity6161 was injected by either lumbar or lateral cervical puncture. The concentration of @entity6161 was relatively high. EEGs were abnormal in 15 out of the 20 @entity1 whose baseline EEGs were normal. EEGs deteriorated in 10 of the 14 @entity1 whose control tracings were abnormal. High voltage delta activity and/or a great deal of theta activity were common abnormalities. Three @entity1 showed triphasic waves. No relationships were found between the EEG changes and clinical variables. But central nervous system involvements by @entity6161 tended to be accompanied by a severe EEG slowing.
