Neonatal status epilepticus.

Seizures are more prevalent during the neonatal period than at any other time in the human lifespan. During early development, neonates are developmentally predisposed to excitatory neuronal activity increasing their susceptibility to seizures. Status epilepticus is poorly defined in this subpopulation with a lack of a consensus definition. In this review, we discuss the common etiologies of recurrent seizures in the newborn in addition to current trends on monitoring and treatment. Finally, we discuss the current evidence in both animal and human studies that indicate that neonatal seizures may be harmful to the immature brain with adverse long-term neurodevelopment outcomes.

[1]  D B Vigneron,et al.  Seizure-associated brain injury in term newborns with perinatal asphyxia , 2002, Neurology.

[2]  J. Volpe Neurology of the Newborn , 1959, Major problems in clinical pediatrics.

[3]  M. Johnston,et al.  Susceptibility of brain to AMPA induced excitotoxicity transiently peaks during early postnatal development , 1992, Brain Research.

[4]  K. Staley,et al.  Bumetanide enhances phenobarbital efficacy in a neonatal seizure model , 2008, Annals of neurology.

[5]  A. Berg,et al.  Status epilepticus in children with newly diagnosed epilepsy , 1999, Annals of neurology.

[6]  K. Staley,et al.  The bumetanide-sensitive Na-K-2Cl cotransporter NKCC1 as a potential target of a novel mechanism-based treatment strategy for neonatal seizures. , 2008, Neurosurgical focus.

[7]  J. Olney,et al.  Antiepileptic drugs and apoptotic neurodegeneration in the developing brain , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[8]  Y. Tomita,et al.  Neurodevelopmental Impact of Antiepileptic Drugs and Seizures in the Immature Brain , 2007, Epilepsia.

[9]  Yehezkel Ben-Ari,et al.  Effects of seizures on developmental processes in the immature brain , 2006, The Lancet Neurology.

[10]  Floris Groenendaal,et al.  Postneonatal epilepsy following amplitude-integrated EEG-detected neonatal seizures. , 2005, Pediatric neurology.

[11]  Terrie E. Inder,et al.  Accuracy of Bedside Electroencephalographic Monitoring in Comparison With Simultaneous Continuous Conventional Electroencephalography for Seizure Detection in Term Infants , 2008, Pediatrics.

[12]  B. Sakmann,et al.  Developmental and regional expression in the rat brain and functional properties of four NMDA receptors , 1994, Neuron.

[13]  Linda S de Vries,et al.  Comparison between simultaneously recorded amplitude integrated electroencephalogram (cerebral function monitor) and standard electroencephalogram in neonates. , 2002, Pediatrics.

[14]  R. Sankar,et al.  Neonatal seizures: after all these years we still love what doesn't work. , 2005, Neurology.

[15]  N Paneth,et al.  Phenobarbital compared with phenytoin for the treatment of neonatal seizures. , 1999, The New England journal of medicine.

[16]  Hannah C. Glass,et al.  Neonatal seizures , 2009, Current treatment options in neurology.

[17]  S. Schubert,et al.  Neuroprotective effects of topiramate after hypoxia–ischemia in newborn piglets , 2005, Brain Research.

[18]  J. Zempel,et al.  A pilot study of continuous limited-channel aEEG in term infants with encephalopathy. , 2009, The Journal of pediatrics.

[19]  F. Jensen,et al.  NBQX or Topiramate Treatment after Perinatal Hypoxia‐induced Seizures Prevents Later Increases in Seizure‐induced Neuronal Injury , 2004, Epilepsia.

[20]  R. Hall,et al.  High-dose phenobarbital therapy in term newborn infants with severe perinatal asphyxia: a randomized, prospective study with three-year follow-up. , 1998, The Journal of pediatrics.

[21]  L. Ment,et al.  Neonatal seizures: multicenter variability in current treatment practices. , 2007, Pediatric neurology.

[22]  G B Boylan,et al.  Second-line anticonvulsant treatment of neonatal seizures , 2004, Neurology.

[23]  G. Holmes,et al.  Seizures in the Developing Brain Perhaps Not So Benign after All , 1998, Neuron.

[24]  J. Swann,et al.  Postnatal development of GABA-mediated synaptic inhibition in rat hippocampus , 1989, Neuroscience.

[25]  B. Sakmann,et al.  Divalent ion permeability of AMPA receptor channels is dominated by the edited form of a single subunit , 1992, Neuron.

[26]  T. Lerer,et al.  Prediction of outcome based on clinical seizure type in newborn infants. , 2002, The Journal of pediatrics.

[27]  I. Soltesz,et al.  GABAA Receptor – Mediated Miniature Postsynaptic Currents and a-Subunit Expression in Developing Cortical Neurons , 1999 .

[28]  I. Soltesz,et al.  GABAA Receptor–Mediated Miniature Postsynaptic Currents and α-Subunit Expression in Developing Cortical Neurons , 1999 .

[29]  B. Sakmann,et al.  Differences in Ca2+ permeability of AMPA-type glutamate receptor channels in neocortical neurons caused by differential GluR-B subunit expression , 1994, Neuron.

[30]  Steven P. Miller,et al.  Clinical Neonatal Seizures are Independently Associated with Outcome in Infants at Risk for Hypoxic-Ischemic Brain Injury. , 2009, The Journal of pediatrics.

[31]  K. Williams,et al.  Expression of mRNAs Encoding Subunits of the NMDA Receptor in Developing Rat Brain , 1995, Journal of neurochemistry.

[32]  M. Delivoria-Papadopoulos,et al.  Cerebral metabolic effects of neonatal seizures measured with in vivo 31P NMR spectroscopy , 1986, Annals of neurology.

[33]  A. Kriegstein,et al.  Excitatory GABA Responses in Embryonic and Neonatal Cortical Slices Demonstrated by Gramicidin Perforated-Patch Recordings and Calcium Imaging , 1996, The Journal of Neuroscience.

[34]  J. Wheless,et al.  Treatment of pediatric epilepsy: European expert opinion, 2007. , 2007, Epileptic disorders : international epilepsy journal with videotape.

[35]  T. Insel,et al.  The ontogeny of excitatory amino acid receptors in rat forebrain—I.N-methyl-d-aspartate and quisqualate receptors , 1990, Neuroscience.

[36]  G B Boylan,et al.  Defining the gap between electrographic seizure burden, clinical expression and staff recognition of neonatal seizures , 2007, Archives of Disease in Childhood Fetal and Neonatal Edition.

[37]  R. Delorenzo,et al.  Treatment of convulsive status epilepticus. Recommendations of the Epilepsy Foundation of America's Working Group on Status Epilepticus. , 1993, JAMA.

[38]  Roustem Khazipov,et al.  Developmental changes in GABAergic actions and seizure susceptibility in the rat hippocampus , 2004, The European journal of neuroscience.

[39]  N. Watemberg,et al.  Comparison of Continuous Drip of Midazolam or Lidocaine in the Treatment of Intractable Neonatal Seizures , 2007, Journal of child neurology.

[40]  G. Holmes Effects of early seizures on later behavior and epileptogenicity. , 2004, Mental retardation and developmental disabilities research reviews.

[41]  E. Wirrell,et al.  Prolonged Seizures Exacerbate Perinatal Hypoxic-Ischemic Brain Damage , 2001, Pediatric Research.

[42]  D. Hirtz,et al.  Late Cognitive Effects of Early Treatment with Phenobarbital , 1999, Clinical pediatrics.

[43]  C. Stafstrom,et al.  Seizures in the Developing Brain Cause Adverse Long‐term Effects on Spatial Learning and Anxiety , 2004, Epilepsia.

[44]  D. Ferriero Neurology of the newborn, ed 4 , 2001 .

[45]  P. Gressens,et al.  Topiramate prevents excitotoxic damage in the newborn rodent brain , 2005, Neurobiology of Disease.

[46]  J. Rotenberg,et al.  Levetiracetam for the Treatment of Neonatal Seizures , 2007, Journal of child neurology.

[47]  F. Jensen,et al.  NKCC1 transporter facilitates seizures in the developing brain , 2005, Nature Medicine.

[48]  G B Boylan,et al.  Phenobarbitone, neonatal seizures, and video-EEG , 2002, Archives of disease in childhood. Fetal and neonatal edition.

[49]  L. Papile Off-Label Use of Antiepileptic Drugs for the Treatment of Neonatal Seizures , 2009 .

[50]  G. Holmes,et al.  Long-term behavioral deficits following pilocarpine seizures in immature rats , 1994, Epilepsy Research.

[51]  S. Vanhatalo,et al.  Bumetanide for neonatal seizures: Based on evidence or enthusiasm? , 2009, Epilepsia.

[52]  R. Guillet,et al.  Electrographic seizures in neonates correlate with poor neurodevelopmental outcome , 2000, Neurology.

[53]  G. Ronen,et al.  The epidemiology of clinical neonatal seizures in Newfoundland: a population-based study. , 1999, The Journal of pediatrics.