The risk of late @entity302 was analyzed in a consecutive series of 177 @entity1 operated on for supratentorial @entity439 . Late @entity410 occurred in 25 @entity1 (14%); the @entity410 were recurrent in 21 @entity1 (12%). Most @entity410 were partial, secondary generalized, or generalized tonic-clonic (72%). The mean latency between the operation and @entity410 was 8.4 months (range, 1 to 24 months), and in only 2 @entity1 was the interval more than 12 months. The most important risk factors were @entity260 . Only 2.5% of the 81 Grade I @entity1 developed @entity302 , compared to 33% of the 42 Grade III-IV @entity1 . Other risk factors were location of the @entity439 in the middle cerebral artery, the presence of a large @entity1779 , postoperative @entity2473 with late @entity1188 , and shunt-dependent @entity1276 . The timing of operation or intraventricular intracranial pressure monitoring did not change the risk of late @entity302 . The fact that only 2 @entity1 had @entity302 may have been due to routine treatment with prophylactic anticonvulsants. The value of prophylaxis in late @entity302 is unproven, but prophylactic treatment could be useful in @entity1 with a high risk of @entity302 .

Late @entity302 after XXXX operations.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity410 :: ('MESH:D012640', 'Disease') :: ['seizures'] @entity1276 :: ('MESH:D006849', 'Disease') :: ['hydrocephalus'] @entity260 :: ('MESH:D011183', 'Disease') :: ['preoperative and postoperative complications'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysms', 'aneurysm'] @entity2473 :: ('MESH:D013035', 'Disease') :: ['spasm'] @entity302 :: ('MESH:D004827', 'Disease') :: ['early epilepsy', 'epileptic seizures', 'epilepsy'] @entity1188 :: ('MESH:D007238', 'Disease') :: ['ischemic infarction'] @entity1779 :: ('MESH:D002543', 'Disease') :: ['intracerebral hematoma']
@entity439 :: (MESH:D000783,Disease) :: ['aneurysm']
