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56 Possible Causes for EEG Multifocal Abnormality, lt 25 hz spike and slow waves

Did you mean: EEG Multifocal Abnormality, lt 25 hz, spike and slow waves

  • Juvenile Absence Epilepsy

    All patients had minimum twice EEG recordings and all had typical 3-Hz generalized spike and slow-wave discharges at least on one EEG.[] EEG shows classical generalized 3 Hz spike-and-slow-wave discharges.[] Diagnostic methods Diagnosis relies on the clinical features and on electroencephalogram (EEG) recorded awake and during sleep, that displays a generalized 3-4 Hz spike-and-slow-wave[]

  • Absence Seizure

    Ictal - EEG is of slow (less than 2.5 Hz) spike and slow wave.[] In 1824, Calmeil used the term absence. [2] In 1935, Gibbs, Davis, and Lennox described the association of impaired consciousness and 3-Hz spike-and-slow-wave complexes on[] The discharge is heterogeneous, often asymmetrical and may include irregular spike and slow wave complexes, fast and other paroxysmal activity.[]

  • Juvenile Myoclonic Epilepsy

    We applied dipole modeling and brain distributed source analysis to find current sources comprising spikes and slow waves of polyspike and wave complexes (PSWC) in patients[] Each SWD was divided into six distinct temporal phases: spike onset, spike peak, slow-wave onset, slow-wave ascending, slow-wave peak, and slow-wave descending phases.[] The discharge is frequently short and fragmented, the spike and slow wave complexes show interdischarge frequency variations with multiple spikes and other characteristics[]

  • Epilepsy

    waves.[] Cigdem Inan Akman, Nonconvulsive Status Epilepticus and Continuous Spike and Slow Wave of Sleep in Children, Seminars in Pediatric Neurology, 17, 3, (155), (2010).[] […] unremarkable and electroencephalograms showed high voltage 200-400uV, 2-2.5 Hz generalized spike-and-waves and polyspikes with alternating frontal predominance, and multifocal spike-and-slow[]

  • Idiopathic Generalized Epilepsy

    […] and slow waves during clonic phase 70% are seizure -free under treatment In some cases, no medical therapy is necessary avoid triggers Epilepsy with myoclonic-atonic seizures[] Panayiotopoulos et al. (1994) [21] observed that 51.5% of patients had spike/multiple spike-slow wave discharges.[] […] comorbidities Epilepsy with tonic-clonic seizures alone 14–20 years Tonic-clonic seizures shortly after awakening or during relaxation Fast spikes during tonic phase; bursts of spikes[]

  • Encephalopathy

    Posterior reversible encephalopathy syndrome is an encephalopathy that can be clinically characterized by headache, altered mental status and/or seizures. Neuroimaging demonstrates usually reversible bilateral subcortical vasogenic occipital-parietal edema. Exact pathophysiology remains unclear but is commonly[…][]

  • Paroxysmal Exertion-Induced Dyskinesia

    […] represent supplementry motor sz Temporal spikes/slow waves features the most common interictal pattern in temporal lobe epilepsy Of all focal waveforms, it is the most epileptogenic[] […] and slow wave, High-amplitude activity, esp. over posterior (Need to lower the sensitivity) Classically a/w electrodecremental seizures (high amplitude seizures that decrease[] […] at onset of a GTC Associated with tonic seizures More common in pts with developmental delay b/w 6 mo-2 yrs (rare after 4 yrs) Irregular, multifocal, chaotic pattern of spikes[]

  • Focal Epilepsy - Speech Disorder - Mental Retardation

    […] and slow-wave discharge indicated by EEG and the discharge index during slow wave sleep 85%; d. local lesions or extensive spike and slow waves in waking state indicated[] The comparison of clinical findings and localization of paroxysmal EEG abnormalities (focal, multifocal, or generalized) at the different stages (before, during, and after[] During the awake and light sleep states, the EEG was abnormal in most of the patients (9/ 11) with multifocal spikes.[]

  • Myoclonic-Astatic Epilepsy

    EEG showed long sequences of generalised irregular spike and slow waves.[] […] patterns (spikes and waves, photosensitivity, 4-7/sec rhythms), no multifocal EEG abnormalities (but often pseudofoci).[] The interictal EEG revealed frequent bursts of generalized 100-200 μV, 2-4 Hz spike-and-slow-wave complexes.[]

  • Panayiotopoulos Syndrome

    An outpatient EEG 6 months later showed abundant multifocal, predominantly posterior, as well as irregular generalized spike-and-slow-wave discharges on normal background[] Interictal EEGs revealed functional multifocal abnormalities. The evolution was benign in all patients with seizures remission before the age of 14.[] […] and slow-wave complexes at 3 Hz associated with myoclonus.  Interictal EEG is variable and ranges from normal to background slowing and generalized spike and slow-wave activity[]

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