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Premium member Presentation Transcript Febrile Seizures: Febrile SeizuresFebrile Seizures: Febrile Seizures Definition “a seizure in association with a febrile illness in the absence of a CNS infection or acute electrolyte imbalance in children older than 1 month of age without prior afebrile seizures”Febrile Seizures: Febrile Seizures Epidemiology 2 to 5 % of children in the US Most common form of childhood seizures Peak at 18 months Simple = isolated, brief, generalized Complex = focal, multiple, or prolongedSimple Febrile Seizures: Simple Febrile Seizures < 15 minutes Generalized-tonic-clonic Fever > 100.4 rectal to 101 F (38 to 38.4 C) No recurrence in 24 hours No post-ictal neuro abnormalities (e.g. Todd’s paresis) Most common 6 months to 5 years Normal development No CNS infection or prior afebrile seizuresRisk Factors for 1st Feb Sz: Risk Factors for 1 st Feb Sz Febrile seizure in 1 st /2 nd degree relative Day care Neonatal nursery stay of >30 days Developmental delay Height of temperatureRisk Factors for Recurrent FS: Risk Factors for Recurrent FS 1/3 will have a recurrence 10% will have 3 or more FH of febrile seizures Age <18 months Height of temperature Duration of feverRisk Factors for Epilepsy: Risk Factors for Epilepsy 2 to 10% will go on to have epilepsy Developmental delay Complex FS (possibly > 1 complex feature) 5% > 30 mins => ¼ of all childhood status FH of epilepsy Duration of feverEvaluation in Febrile Seizures: Evaluation in Febrile Seizures Exclude acute etiologies HCT, lytes/cbc if history/PE suggests Strongly consider LP < 12 months old Prior antibiotic therapy Suspicious findings on history/PE Not absolutely necessary in > 18 mosEvaluation in FS (2): Evaluation in FS (2) EEG Does NOT predict recurrence or epilepsy More likely to be abnormal in: Older children Neurodevelopmental abnormalities Family history of febrile seizures Complex febrile seizureFebrile Seizures—Treatment: Febrile Seizures—Treatment May reduce short-term recurrence But NO effect on occurrence of epilepsy AND the side effects ! The approach is based on epidemiological data that FS are benign, so Prevent status epilepticusFS—Treatment (2): FS—Treatment (2) Antipyretics No data that this reduces risk FS at onset of fever => highest recurrence Benzodiazepines Rectal diazepam (Valium) 2-5 y/o 0.5 mg/kg 6-11 y/o 0.3 mg/kg (round up to 2.5, 5, 10 mg) Oral diazepam 0.33 mg/kg q8 hrs x 48 hrs during illnessFS—Treatment (3): FS—Treatment (3) Daily medications NOT recommended Phenobarbital Drowsiness, sleep problems, hyperactivity, IQ Valproic acid Hepatotoxicity Phenytoin and carbamazepine Not effectiveSeizures—Exam: Seizures—Exam Temp, BP, HC Skin (rash, neurocutaneous lesions), Neck Evidence of dysmorphisms, developmental delay Evidence of increased intracranial pressure Bulging anterior fontanelle Depressed level of consciousness Pupillary asymmetries Downgaze/sunsetting eyes Abducens palsy PapilledemaSeizures—Exam (2): Seizures—Exam (2) Evidence of focal deficits Weakness Intracranial lesion versus Todd paresis Tone or reflex asymmetry ? Chronic versus acuteSeizures—Evaluation: Seizures—Evaluation Lumbar puncture “Strongly consider” in patient <12 mo with first febrile seizure Kernig’s, Brudzinski’s, nuchal rigidity low sensitivity (Thomas 2002) But usually more than isolated seizure History of irritability/lethargy Complex febrile seizure Slow postictal clearing of mentationSeizures—Evaluation (2): Seizures—Evaluation (2) Neuroimaging “Emergent” HCT Concern of acute focal lesion, mass effect I.e. persistent paresis or change in MS MRI (nonurgent) Focal sz Cognitive/motor impairment Focal EEG findings EEG Not if simple febrile seizurePatient and Family Education: Patient and Family Education An integral part of the management of a first febrile seizure is helping the family to cope with a frightening experience. Parents may believe that their child is dying during a first febrile seizure. The challenge is to help the family deal with the emotional trauma and to understand the excellent prognosis of febrile seizures. It is important that the family understand that there is no increased risk of intellectual delay or school difficulties and that febrile seizures less than 30 minutes do not result in brain damage. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.