OBJECTIVE: In children with newly diagnosed childhood absence epilepsy (CAE), determine pretreatment EEG features and their associations with baseline neuropsychological function and short-term treatment outcome. METHODS: In a multicenter, randomized clinical trial, patients with CAE underwent a pretreatment, 1-hour video-EEG and neuropsychological testing with freedom-from-failure and seizure-freedom (SF) outcome assessed at the 16- to 20-week visit. RESULTS: Detailed evaluation of the pretreatment EEG was possible for 99.8% of participants (445/446). Median time to first seizure was 6.0 minutes (range 0-59 minutes), median number of seizures was 5 (range 1-60), and median seizure duration was 10.8 seconds (range 3.3-77.6 seconds). Median duration of shortest seizure per EEG was 7.5 seconds (range 3.0-77.6 seconds). Seizure frequency was not associated with baseline measures of attention, executive function, or treatment outcome. Presence of a seizure lasting ≥20 seconds was noted in 29% of subjects (129/440); these children had higher median omissions T score on the Conners Continuous Performance Test (56.3 vs 51.6, p = 0.01). Patients with a shortest seizure of longer duration were more likely to demonstrate treatment success by both freedom-from-failure (p = 0.02) and SF (p = 0.005) criteria, even after controlling for age, treatment group, and number of seizures, with good predictive value (area under the curve 78% for SF). CONCLUSIONS: CAE is reliably and quickly confirmed by EEG. Occurrence of a seizure ≥20 seconds, but not overall seizure frequency, was associated with differential baseline measures of attention. Patients whose shortest pretreatment EEG seizure was longer in duration were more likely to achieve SF, regardless of treatment.
RCT Entities:
OBJECTIVE: In children with newly diagnosed childhood absence epilepsy (CAE), determine pretreatment EEG features and their associations with baseline neuropsychological function and short-term treatment outcome. METHODS: In a multicenter, randomized clinical trial, patients with CAE underwent a pretreatment, 1-hour video-EEG and neuropsychological testing with freedom-from-failure and seizure-freedom (SF) outcome assessed at the 16- to 20-week visit. RESULTS: Detailed evaluation of the pretreatment EEG was possible for 99.8% of participants (445/446). Median time to first seizure was 6.0 minutes (range 0-59 minutes), median number of seizures was 5 (range 1-60), and median seizure duration was 10.8 seconds (range 3.3-77.6 seconds). Median duration of shortest seizure per EEG was 7.5 seconds (range 3.0-77.6 seconds). Seizure frequency was not associated with baseline measures of attention, executive function, or treatment outcome. Presence of a seizure lasting ≥20 seconds was noted in 29% of subjects (129/440); these children had higher median omissions T score on the Conners Continuous Performance Test (56.3 vs 51.6, p = 0.01). Patients with a shortest seizure of longer duration were more likely to demonstrate treatment success by both freedom-from-failure (p = 0.02) and SF (p = 0.005) criteria, even after controlling for age, treatment group, and number of seizures, with good predictive value (area under the curve 78% for SF). CONCLUSIONS: CAE is reliably and quickly confirmed by EEG. Occurrence of a seizure ≥20 seconds, but not overall seizure frequency, was associated with differential baseline measures of attention. Patients whose shortest pretreatment EEG seizure was longer in duration were more likely to achieve SF, regardless of treatment.
Authors: Shlomo Shinnar; Avital Cnaan; Fengming Hu; Peggy Clark; Dennis Dlugos; Deborah G Hirtz; David Masur; Eli M Mizrahi; Solomon L Moshé; Tracy A Glauser Journal: Neurology Date: 2015-08-26 Impact factor: 9.910
Authors: Tracy A Glauser; Katherine Holland; Valerie P O'Brien; Mehdi Keddache; Lisa J Martin; Peggy O Clark; Avital Cnaan; Dennis Dlugos; Deborah G Hirtz; Shlomo Shinnar; Gregory Grabowski Journal: Ann Neurol Date: 2017-03 Impact factor: 10.422
Authors: Jack J Lin; Kevin Dabbs; Jeffrey D Riley; Jana E Jones; Daren C Jackson; David A Hsu; Carl E Stafstrom; Michael Seidenberg; Bruce P Hermann Journal: Ann Neurol Date: 2014-08-18 Impact factor: 10.422
Authors: Robert J Heuermann; Thomas C Jaramillo; Shui-Wang Ying; Benjamin A Suter; Kyle A Lyman; Ye Han; Alan S Lewis; Thomas G Hampton; Gordon M G Shepherd; Peter A Goldstein; Dane M Chetkovich Journal: Neurobiol Dis Date: 2015-10-14 Impact factor: 5.996