Clinical Edge

Summaries of Must-Read Clinical Literature, Guidelines, and FDA Actions

Circadian, Circaseptan Rhythms in Epilepsy Examined

Lancet Neurol; ePub 2018 Sep 12; Karoly, et al

Epileptic seizure cycles are robust, patient specific, and more widespread than previously understood, according to a recent study, which suggests that these seizures align with the accepted consensus that most epilepsies have some diurnal influence. This retrospective cohort study used the 2 most comprehensive databases of human seizures (SeizureTracker [USA] and NeuroVista [Australia]) and analytic techniques from circular statistics to analyze patients with epilepsy for the presence and frequency of multi-temporal cycles of seizure activity. Researchers used data from 12 people from the NeuroVista study and 1,118 patients from the SeizureTracker database. They found:

  • At least 891 (80%) of total patients in the SeizureTracker cohort and 11 (92%) of total patients in the NeuroVista cohort showed circadian (24-hour) modulation of their seizure rates.
  • In the NeuroVista cohort, patient 8 had a significant cycle at precisely 1 week, patients 1 and 7 others also had approximately 1-week cycles, and patients 1 and 4 had 2-week cycles.
  • In the SeizureTracker cohort, between 77 (7%) and 233 (21%) of total patients showed strong circaseptan (weekly) rhythms, with a clear 7-day period.

Citation:

Karoly PJ, Goldenholz DM, Freestone DR, et al. Circadian and circaseptan rhythms in human epilepsy: A retrospective cohort study. [Published online ahead of print September 12, 2018]. Lancet Neurology. doi:10.1016/S1474-4422(18)30274-6.

This Week's Must Reads

Global Dementia More Than Doubled from 1990 to 2016, Lancet Neurol; 2019 Jan 1; GBD 2016 Dementia Collaborators

Recurrent Stroke Linked with Not Having a PCP, Neurology; ePub 2019 Jan 4; Lank, et al

Racial Disparities in Biomarkers for AD Examined, JAMA Neurology; ePub 2019 Jan 7; Morris, et al

US Trends in Interhospital Transfers, Thrombectomy , J Stroke Cerebrovasc Dis; ePub 2019 Jan 9; George, et al

Thrombophilia in Young Adults with Ischemic Stroke, J Stroke Cerebrovasc Dis; ePub 2018 Dec 27; Omran, et al

Must Reads in Epilepsy & Seizures

Hospital Readmission After Seizure Discharge, Neurology; ePub 2018 Dec 21; Blank, et al

Information About SUDEP on YouTube Analyzed, Epilepsy Behav; ePub 2018 Dec 7; Rayi, et al

Unplanned Pregnancy, Fetal Loss, and Epilepsy, JAMA Neurology; ePub 2018 Oct 15; Herzog, et al

Probable OSA Common in Refractory Epilepsy, Epilepsia; ePub 2018 Sep 24; McCarter, et al

Circadian, Circaseptan Rhythms in Epilepsy Examined, Lancet Neurol; ePub 2018 Sep 12; Karoly, et al