The goal of this study was to determine whether the EEG could predict if @entity1 with focal @entity410 would eventually be uncontrolled (U), more than two @entity410 per month, or be controlled (C), fewer than two @entity410 per year. Using these latter criteria, U and C @entity1 were randomly selected from our files, 150 in each of these two groups; 804 EEGs were found in the U and 674 in the C group. Excluded were @entity1 with @entity6191 and also the @entity302 of childhood. Age was an important factor since @entity1 5-18 yrs old were more often under good control (C group), and those 21-48 yrs of age were more often under poor control (U group). With rare exceptions, focal spikes and focal slow waves in every area were much more often seen in U @entity1 than C @entity1 . No spikes or rare spikes appeared especially in the controlled @entity1 , and many or very many spikes in the uncontrolled @entity1 , mainly on the first or second EEG. No slow waves or a mild degree of slowing was seen especially in the C @entity1 , while greater degrees of @entity73 were noted much more often in the U @entity1 . For conditions to identify the C group, the best predictors were no spikes or rare spikes, especially on the first or second EEG, properly identifying two-thirds of the C @entity1 and misidentifying only one-fourth of the U group. To identify the U @entity1 on any EEG, many or very many spikes at any location or frontal spikes correctly designated a U @entity1 in 84%, but incorrectly predicted a C @entity1 as uncontrolled in 29%. For the first or second EEG, these values were 61% and 21%. Thus, the EEG, especially by its first or second record, can predict well the probable future of the uncontrolled @entity1 , so that extraordinary means may be instituted early to avoid a deteriorating condition. When complete EEGs are done with sleep records and the results are quantified, reasonable prediction of eventual outcome can usually occur that is much more timely than waiting over 9 yrs, using only clinical data.

Focal XXXX and EEG: prognostic considerations.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity410 :: ('MESH:D012640', 'Disease') :: ['seizures'] @entity73 :: ('MESH:D003072', 'Disease') :: ['slow wave abnormalities'] @entity302 :: ('MESH:D004827', 'Disease') :: ['benign epilepsies'] @entity6191 :: ('MESH:D004829', 'Disease') :: ['generalized epilepsy']
@entity410 :: (MESH:D012640,Disease) :: ['seizures']
