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Title: Could Rolandic spikes be a prognostic factor of the neurocognitive outcome of children with BECTS?
Author: Tristano I, Nicita F, Garone G, Ursitti F, Nardone C, Rocchi V, Guido CA, Spalice A.
Journal: Epilepsy Behav; 2018 Sep; 86():157-162. PubMed ID: 30031676.
Abstract:
INTRODUCTION: Rolandic epilepsy, also known as benign childhood epilepsy with centrotemporal spikes (BECTS), is one of the most common epileptic syndromes in previously healthy children. Despite what was known about the benignity of this syndrome, there is always more evidence about the involvement of the cognitive functions with different deficits in several domains to be investigated. AIM OF THE STUDY: The aim of our study was to describe prognostic electroencephalogram (EEG) pattern of an adverse cognitive development to recognize patients at higher risk of lasting cognitive deficits that could need antiepileptic drugs (AEDs) or an improved neurocognitive therapy. In addition, we wanted to investigate the existence of a possible linkage between the number of interictal epileptiform discharges (IEDs) in the EEG and the more pronounced cognitive deficits. MATERIAL AND METHODS: We performed a case-control study on a cohort of 16 patients (10 male and 6 female) aged 4-14, diagnosed with BECTS who underwent EEG, magnetic resonance imaging (MRI), and neurocognitive assessment at the Pediatric Neurology Unit at the Umberto I Hospital, Sapienza University of Rome. Patients were divided into two groups according to the percentage of IEDs evaluated based on their sleep EEG: group A with less than 50% of the entire EEG invaded by discharges in more than 70% of the total number of EEG performed, so-called with low or intermediate activation. On the contrary, group B had a high activation, with more than 50% of the entire EEG invaded by discharges in the same percentage of the EEG performed. All children were assessed based on a protocol designed to study neuropsychological functions with specific tests chosen depending on age (Wechsler Intelligence Scale for Children IV: WISC IV; Wechsler Preschool and Primary Scale of Intelligence III: WPPSI III). Groups were compared for cognitive outcomes achieved by each patient through Student's t-test with a significance level of p<0.05 (two-tailed). RESULTS: There is no statistically significant difference in the cognitive outcomes of these patients: Student's t-test showed a statistical significance (p) for each cognitive index always higher than 0.05, demonstrating that the intellectual quotient (IQ) and all other indexes analyzed (verbal comprehension index (VCI), perceptual reasoning index (PRI), working memory index (WMI), and processing speed index (PSI)) are not affected by the difference in EEG anomalies presented by our patients. Interestingly, all patients had an IQ equal to or greater than the Italian average (12 out of 16 patients showed an IQ>100), with selective drops, particularly significant in the WMI and also in the PSI. CONCLUSIONS: Our results clearly demonstrate the importance of a proper evaluation of patients with this kind of epilepsy, without paying attention only to those with the greatest number of IEDs or seizures because all of them had a neurocognitive impairment, especially in memory. These data may be reinforced by a larger sample for an even more significant statistical value. These results also highlight the importance of a neurocognitive therapy for these children to treat for their specific needs.

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