First afebrile seizures: Clinical and radiological view with emergent testing.

BACKGROUND: The first afebrile seizures in children are an important and common reason for emergency department admissions. We aim to examine the presentation, laboratory/neurodiagnostic investigation, and emergency management of children with first afebrile seizures. METHODS: The retrospective study included 333 patients aged 1 month to 18 years admitted with a first afebrile seizure to the pediatric emergency department of Prof. Dr. Cemil Tascioglu City Hospital between January 2017 and January 2020. Age, gender, seizure duration and type, treatments for seizures, laboratory, neurophysiological, and radiological investigations, ward or intensive care unit hospitalizations, and antiepileptic drugs on discharge were recorded. RESULTS: The average age of the patients was 81.6 ± 62.9 months; 187 (56.2%) were male and 146 (43.8%) were female. Two hundred and sixty-one (78.4%) patients had only one seizure. In 45 (13.5%) of the patients, the seizure recurred in the emergency department. Hypoglycemia, hyponatremia, and hypocalcemia were detected in 13 (3.9%) patients. Patients with clinically significant cranial computed tomography results were at an increased risk for seizures lasting longer than 5 min. Patients with focal seizures had more recurrences, were given more antiepileptic drugs during the emergency, had better known etiology, more intensive care unit hospitalization, and greater post-discharge antiepileptic drug prescription. CONCLUSIONS: Biochemical abnormalities remain in the background in the etiology of afebrile seizures. Patients with abnormal neuroimaging on cranial tomography tended to have longer seizures. Patients with focal seizures followed a more complicated course as they had more recurrences and more hospitalization in the intensive care unit.

Electroencephalogram versus Magnetic Resonance Imaging Brain as the Initial Investigation of Choice in Neurologically Normal Children with First Afebrile Seizure in India.

BACKGROUND AND PURPOSE: To compare the rates of clinically relevant information provided by electroencephalogram (EEG) and magnetic resonance imaging (MRI) brain in first afebrile seizure (FAS) in children. METHODS: In this prospective randomized controlled trial, neurologically normal children between the age of 2 and 14 years, presenting with first episode of unprovoked, afebrile generalized or partial seizures, were included. Enrolled patients were randomized into two groups. After stabilization, initial workup and management, group I-patients underwent an EEG followed by MRI, whereas group II-patients underwent an initial MRI brain followed by an EEG. The patients were followed up after results of both the investigations and then every 3 months for seizure recurrence. The primary outcome was the proportion of investigations, providing clinically relevant information. The secondary outcomes were to determine the etiological diagnosis of FAS and record adverse events associated with EEG and MRI. RESULTS: Out of 170 enrolled patients, 52 patients (61.2%) in initial EEG group and 53 patients (70.6%) in initial MRI group had abnormal results on first investigation. An etiological diagnosis could not be made in any patient in initial EEG group. Neuroimaging revealed an etiological diagnosis in 53 patients (70.6%) in initial MRI group. Inflammatory granuloma was found to be the most common cause of FAS, followed by idiopathic epilepsy. CONCLUSIONS: The results of our study done in neurologically normal children with FAS showed a high diagnostic yield with an initial MRI. We recommend MRI brain to be considered as the initial investigation for evaluation of FAS in children.

Identification of Missense ADGRV1 Mutation as a Candidate Genetic Cause of Familial Febrile Seizure 4.

Febrile seizure (FS) is related to a febrile illness (temperature > 38 °C) not caused by an infection of central nervous system, without neurologic deficits in children aged 6-60 months. The family study implied a polygenic model in the families of proband(s) with single FS, however in families with repeated FS, inheritance was matched to autosomal dominance with reduced disease penetrance. A 20 month-old girl showed recurrent FS and afebrile seizures without developmental delay or intellectual disability. The seizures disappeared after 60 months without anti-seizure medication. The 35 year-old proband's mother also experienced five episodes of simple FS and two episodes of unprovoked seizures before 5 years old. Targeted exome sequencing was conducted along with epilepsy/seizure-associated gene-filtering to identify the candidate causative mutation. As a result, a heterozygous c.2039A>G of the ADGRV1 gene leading to a codon change of aspartic acid to glycine at the position 680 (rs547076322) was identified. This protein's glycine residue is highly conserved, and its allele frequency is 0.00002827 in the gnomAD population database. ADGRV1 mutation may have an influential role in the occurrence of genetic epilepsies, especially those with febrile and afebrile seizures. Further investigation of ADGRV1 mutations is needed to prove that it is a significant susceptible gene for febrile and/or afebrile seizures in early childhood.

Ictal Cardiorespiratory Arrest Associated with Status Epilepticus in Panayiotopoulos Syndrome.

A healthy 10-year-old boy vomited during sleep and later complained of abdominal pain; he became drowsy and uncommunicative. At the nearby hospital E.R., he deteriorated rapidly, and his respiratory movements were absent with cardiac arrest. He was immediately resuscitated. Brain MRI showed no abnormalities. EEG revealed an abnormal pattern with recurrent multifocal epileptiform activity over the bilateral occipital and frontal regions during sleep. Based on the clinical/radiological findings we diagnosed Panayiotopoulos syndrome (PS), a benign form of early-onset pediatric epilepsy characterized by autonomic symptoms. Lifethreating cardiopulmonary arrest is rare in PS, but long seizure duration of PS may associate with apnea and bradycardia.

Asociación entre rotavirus y síndrome convulsivo febril y afebril / Relationship between rotavirus and convulsive syndrome febrile and afebril

El Rotavirus es causa habitual de diarrea grave en niños pequeños a nivel mundial. Las manifestaciones clínicas incluyen: diarrea líquida, fiebre, y vómitos, llevando a estados de deshidratación y típica gastroenteritis; además pueden presentar múltiples complicaciones neurológicas, como convulsiones febriles o afebriles. La prevalencia real de estas convulsiones oscilaría entre el 2 y 6%. La fisiopatología de las mismas es aún incierta, pero se han propuesto teorías que intentan explicar un posible mecanismo, entre las que estarían involucrados factores genéticos, raciales, distribución de serotipos, factores pro-convulsivos e incluso alteraciones de la barrera hematoencefálica. Si bien este es un síndrome cuya etiología no es única, se tomará en cuenta la infección por rotavirus ya que este se ha identificado con mayor frecuencia, sobre todo en pacientes afebriles, evitando así procedimientos e intervenciones innecesarias para su diagnóstico.

The Rotavirus is common cause of severe diarrhea in young children worldwide. Clinical manifestations include: liquid diarrhea, fever, and vomiting, leading to states of dehydration and typical gastroenteritis; In addition, they may present multiple neurological complications, such as febrile seizures or afebrile seizures. The actual prevalence of these seizures would range between 2 and 6%. Their pathophysiology is still uncertain, but theories have been proposed that try to explain a possible mechanism, including genetic factors, racial, serotype distribution, pro-convulsive factors and even alterations of the blood-brain barrier. Although this is a syndrome whose etiology is not unique, rotavirus infection will be taken into account since it has been identified more frequently, especially in afebrile patients, thus avoiding unnecessary procedures and interventions for its diagnosis.

Neuro-imaging evaluation after the first afebrile seizure in children: A retrospective observational study.

PURPOSE: To evaluate the role of neuro-imaging in children presenting with the first afebrile seizure and determine factors that influence the outcome of imaging in a large paediatric emergency centre. METHOD: This is a retrospective review of the medical records of all patients presenting with the first non-febrile seizure to a large paediatric emergency centre in the state of Qatar. Seizure classification followed the current ILAE classification system. Imaging was undertaken in our tertiary hospital and all images were reviewed by experienced neuro-radiologists. Student t test was used for statistical analysis. RESULTS: Ninety-six children underwent neuro-imaging following the first afebrile seizure. Of them, thirty-two patients (33%) were reported to have abnormalities. Children below the age of two demonstrated a significantly higher percentage of abnormal imaging (59%); (p=0.002). Children presenting with prolonged seizures showed a high percentage of imaging abnormalities (58%); (p=0.003). Children with focal seizures demonstrated a higher percentage of imaging abnormality compared to those presenting with generalized seizures (35% vs 31%). This difference did not reach statistical significance. CONCLUSION: Children below the age of two demonstrated significantly higher percentages of abnormal imaging (59%), as did children presenting with status epilepticus (58%). Neuro-imaging should be considered in infants and those with focal or prolonged seizures. Neuro-imaging informed decision making in 6-8% of children.

[Para-infectious seizures: A retrospective multicentre study]. / Crisis parainfecciosas: estudio retrospectivo multicéntrico.

INTRODUCTION: Para-infectious seizures are afebrile seizures that are associated with mild infections, and occur in children with no pre-existing neurological illness. They are still little known in our environment. METHODS: A multicentre retrospective study was conducted that included patients with normal psychomotor development and had presented with one or more seizures in the context of a mild afebrile infection. RESULTS: A total of 38 patients (47% male, 53% female) were included in the study over a period of three years (2012-2015). The mean age was 2.1 years. A previous history of febrile seizures was found in 7.9% of them. Mean number of seizures per patient was 2.2, with 57.9% of them being tonic-clonic seizures. The mean duration of seizures was 3.2minutes. An EEG was performed during admission in 73.7% of cases. Lumbar punctures were performed in 34.2% of cases. All were normal. Neuroimaging tests were carried out in 36.9% of cases. Brain MRI was the imaging test performed in most cases (21.1%), with no any pathological findings. The most frequent infection found was acute gastroenteritis (68%), followed by upper respiratory tract infection (32%). Almost two-thirds (63.2%) of patients did not require anticonvulsant medication. Rectal diazepam was the most frequently used drug in emergencies. Intravenous medication was required by 28.9% of patients due to repeated seizures. The most frequently used drug in the non-emergency setting was valproic acid. Anticonvulsant treatment was continued after discharge in 16% of patients. Para-infectious seizures was the diagnosis in 76.3% of cases when discharged. CONCLUSIONS: Knowledge of para-infectious seizures, their clinical diagnosis and benign course is crucial, as this would avoid further testing and unnecessary treatments.

Neurocysticercoiis in children presenting with febrile seizure: clinical profiile, imaging and serodiagnosis / Neurocisticercose em crianças apresentando crises afebris: perfil clínico, imagem e sorodiagnóstico

Neurocysticercosis (NCC) is one of the major causes of childhood seizures in developing countries including India and Latin America. In this study neurological pediatric cases presenting with afebrile seizures were screened for anti-Cysticercus antibodies (IgG) in their sera in order to estimate the possible burden of cysticercal etiology. The study included a total of 61 pediatric afebrile seizure subjects (aged one to 15 years old); there was a male predominance. All the sera were tested using a pre-evaluated commercially procured IgG-ELISA kit (UB-Magiwell Cysticercosis Kit ™). Anti-Cysticercus antibody in serum was positive in 23 of 61 (37.7%) cases. The majority of cases with a positive ELISA test presented with generalized seizure (52.17%), followed by complex partial seizure (26.08%), and simple partial seizure (21.73%). Headaches were the major complaint (73.91%). Other presentations were vomiting (47.82%), pallor (34.78%), altered sensorium (26.08%), and muscle weakness (13.04%). There was one hemiparesis case diagnosed to be NCC. In this study one child without any significant findings on imaging was also found to be positive by serology. There was a statistically significant association found between the cases with multiple lesions on the brain and the ELISA-positivity (p = 0.017). Overall positivity of the ELISA showed a potential cysticercal etiology. Hence, neurocysticercosis should be suspected in every child presenting with afebrile seizure especially with a radio-imaging supportive diagnosis in tropical developing countries or areas endemic for taeniasis/cysticercosis.

Neurocisticercose é uma das causas mais comuns de crises em crianças em países em desenvolvimento incluindo Índia e América Latina. Neste estudo casos neurológicos pediátricos, apresentando crises afebris foram selecionados através de anticorpos anti-Cysticercus (IgG) no seu soro para avaliar possível etiologia de Cysticercus. O estudo incluiu total de 61 casos pediátricos de indivíduos com crises afebris (idade de um a 15 anos); houve predominância de pacientes do sexo masculino. Todos os soros foram testados usando um kit comercial IgG-ELISA (UB-Magiwell Cysticercosis kit™) avaliado previamente. O anticorpo anti-Cysticercus no soro foi positivo em 23 de 61 casos (37,7%). A maioria dos casos com teste de ELISA positivo apresentava crises generalizadas (52,17%), seguida por casos de crises parciais complexas (26,08%) e crises parciais simples (21,73%). Dores de cabeça foram a queixa principal (73,91%). Outras manifestações foram vômitos (47,82%), palidez (34,78%), sensório alterado (26,08%) e fraqueza muscular (13,04%). Houve um caso de hemiparesia diagnosticado como NCC. Neste estudo uma criança sem quaisquer achados significantes às imagens apresentou sorologia positiva. Houve associação estatística significante entre os casos com múltiplas lesões no cérebro e a positividade pelo ELISA (p = 0,017). No seu conjunto a positividade pelo ELISA demonstra etiologia potencial para a cisticercose. Portanto neurocisticercose deve ser suspeitada em qualquer criança apresentado crises afebris com imagem que sugira diagnóstico em países tropicais em desenvolvimento ou em áreas endêmicas para teníase/cisticercose.

Detection and Genotyping of Viruses Detected in Children with Benign Afebrile Seizures Associated with Acute Gastroenteritis / 대한소아소화기영양학회지

PURPOSE: Rotaviruses, noroviruses, astroviruses, and enteric adenoviruses cause acute gastroenteritis (AGE) in children. Some children with AGE have afebrile convulsions associated with viral gastroenteritis. The purpose of this study was to detect and genotype viruses from children with AGE or benign infantile seizures associated with mild gastroenteritis (BIS-MG). METHODS: Between August 2004 and June 2005, 311 children with AGE were included. Four viral agents, including rotavirus, norovirus, astrovirus, and adenovirus, were analyzed from stool specimens of each patient using the latex agglutination method, enzyme immunoassay, and reverse transcriptase polymerase chain reaction. Genotyping of each virus was performed in 217 of the 311 children. RESULTS: Among 217 children (male, 121; female, 96; mean age, 20.6+/-15.4 months), rotavirus was detected in 109 (50.2%), norovirus in 28 (12.9%), adenovirus in 13 (6.0%), and astrovirus in 2 children (0.9%). Genotyping of rotavirus revealed positive results in 97 children; P[8]G3 in 36, P[4]G2 in 21, P[6]G4 in 10, P[4]G4 in 9, P[8]G9 in 6, P[8]G1 in 6, P[4]G3 in 4, P[4]G9 in 3, and P[6]G2 in 2. Genotyping of norovirus showed GII-4 in 27 of 28 children and GII-6 in 1 child. Sixteen children were diagnosed with BIS-MG. Rotavirus was detected in 13 of 16 children with BIS-MG, and norovirus in 2 children. Genotyping of rotavirus detected in children with BIS-MG revealed P[8]G3 in 6 children, P[4]G2 in 2 children, and P[4]G9 in 1 child. CONCLUSION: Analysis of viruses from stool specimens indicates that both rotavirus and norovirus are the main viruses related to BIS-MG in children.

Clinical Investigation of Benign Afebrile Seizure with Gastroenteritis / 대한소아신경학회지

PURPOSE: The aim of this study is to characterize detailed clinical features of benign afebrile seizure with gastroenteritis. METHODS: We retrospectively investigated the medical records of 52 patients with benign afebrile seizure and gastroenteritis, who were admitted to the Department of Pediatrics Eulji University Hospital, between February 1996 and January 2005. RESULTS: There were 52 patients with benign afebrile seizure and gastroenteritis:18 boys and 34 girls. Most of the patients(86.5%) were from 12 to 23 months of age. In the monthly distribution, 71.1% were admitted between November and March. Most of the seizures(98.0%) were generalized and 53.9% of those were generalized tonic and clonic. The durations of the seizures were mostly within 5 minutes. 40 patients(76.9%) had 2 or more seizures. The interval between the onset of gastroenteritis and seizures was mostly from 2 to 4 days. Fifteen out of 32 patients were rotazyme positive. Chi-square test was performed to identify if there was any association between rotavirus and afebrile seizure. Rotavirus gastroenteritis has a stastically significant association with afebrile seizure compared to non-rotavirus gastroenteritis(P<0.01). The relative risk between rotavirus and non-rotavirus gastroenteritis was 3.35. However, there were no significant differences in clinical features between two groups. Cerebrospinal fluid was normal and cell counts, glucose and protein levels in all the patients examined. Either brain CT or MRI was performed in 9 patients and demonstrated no neuroradiological abnormalities. Electroencephalography was performed in 47 patients, of whom 43 patients(92.3%) showed normal electroencephalographic patterns. CONCLUSION: Benign afebrile seizure is characterized by the onset age between 12 months and 23 months, multiple episodes of seizure, short duration, generalized type, high incidence between November and March, and rotavirus as a major pathogen.