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Delval A, Girard B, Lacan L, Chaton L, Flamein F, Storme L, Derambure P, The Tich SN, Lamblin MD, Betrouni N. Neurophysiological recordings improve the accuracy of the evaluation of the outcome in perinatal hypoxic ischemic encephalopathy. Eur J Paediatr Neurol 2022; 36:51-56. [PMID: 34890946 DOI: 10.1016/j.ejpn.2021.11.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 09/20/2021] [Accepted: 11/16/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVES Our objective was to evaluate the potential additional value of electroencephalogram (EEG) and evoked potentials in neonates with hypoxic-ischemic encephalopathy to predict their disability at 1 and 2 years old. METHODS 30 full-term infants after perinatal asphyxia who underwent therapeutic hypothermia were evaluated at 1 year and 2 years for disability using International Classification of Functioning, Disability and Health classification. Scores for EEG, sensory evoked potentials and brainstem auditory evoked potentials were evaluated after withdrawal of therapeutic hypothermia that lasted 72 h. A regression approach was investigated to build models allowing to distinguish neonates according to their disability at 1 and 2 years. Two models were built, the first by considering the clinical data and EEG before and after therapeutic hypothermia and the second by incorporating evoked potentials recording. RESULTS Adding EEG and evoked potentials data after rewarming improved dramatically the accuracy of the model considering outcome at 1 and 2 years. INTERPRETATION We propose to record systematically EEG and evoked potentials following rewarming to predict the outcome of neonates with hypoxic ischemic encephalopathy. Combination of altered evoked potentials with no improvement of EEG after rewarming appeared to be a robust criterion for a poor outcome.
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Affiliation(s)
- Arnaud Delval
- Univ. Lille, Inserm, U1172 - Lille, Neuroscience Cognition, F-59000, Lille, France; Clinical Neurophysiology Department, Lille University Medical Center, F-59000, Lille, France.
| | - Barbara Girard
- Children Department of Physical Medicine and Rehabilitation, Institut Régional de Réadaptation, Flavigny sur Moselle, France
| | - Laure Lacan
- EA4489, Environnement Périnatal et Santé, Faculté de Médecine, Université de Lille, France; Pediatric Neurology Department, Lille University Medical Center, F-59000, Lille, France
| | - Laurence Chaton
- Clinical Neurophysiology Department, Lille University Medical Center, F-59000, Lille, France
| | - Florence Flamein
- EA4489, Environnement Périnatal et Santé, Faculté de Médecine, Université de Lille, France
| | - Laurent Storme
- Pediatric Neurology Department, Lille University Medical Center, F-59000, Lille, France
| | - Philippe Derambure
- Univ. Lille, Inserm, U1172 - Lille, Neuroscience Cognition, F-59000, Lille, France; Clinical Neurophysiology Department, Lille University Medical Center, F-59000, Lille, France
| | - Sylvie Nguyen The Tich
- EA4489, Environnement Périnatal et Santé, Faculté de Médecine, Université de Lille, France; Pediatric Neurology Department, Lille University Medical Center, F-59000, Lille, France
| | - Marie-Dominique Lamblin
- Clinical Neurophysiology Department, Lille University Medical Center, F-59000, Lille, France
| | - Nacim Betrouni
- Univ. Lille, Inserm, U1172 - Lille, Neuroscience Cognition, F-59000, Lille, France
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Dali CÍ, Barton NW, Farah MH, Moldovan M, Månsson JE, Nair N, Dunø M, Risom L, Cao H, Pan L, Sellos-Moura M, Corse AM, Krarup C. Sulfatide levels correlate with severity of neuropathy in metachromatic leukodystrophy. Ann Clin Transl Neurol 2015; 2:518-33. [PMID: 26000324 PMCID: PMC4435706 DOI: 10.1002/acn3.193] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 02/04/2015] [Indexed: 11/10/2022] Open
Abstract
Objective Metachromatic leukodystrophy (MLD) is an autosomal recessive lysosomal storage disorder due to deficient activity of arylsulfatase A (ASA) that causes accumulation of sulfatide and lysosulfatide. The disorder is associated with demyelination and axonal loss in the central and peripheral nervous systems. The late infantile form has an early-onset, rapidly progressive course with severe sensorimotor dysfunction. The relationship between the degree of nerve damage and (lyso)sulfatide accumulation is, however, not established. Methods In 13 children aged 2–5 years with severe motor impairment, markedly elevated cerebrospinal fluid (CSF) and sural nerve sulfatide and lysosulfatide levels, genotype, ASA mRNA levels, residual ASA, and protein cross-reactive immunological material (CRIM) confirmed the diagnosis. We studied the relationship between (lyso)sulfatide levels and (1) the clinical deficit in gross motor function (GMFM-88), (2) median and peroneal nerve motor and median and sural nerve sensory conduction studies (NCS), (3) median and tibial nerve somatosensory evoked potentials (SSEPs), (4) sural nerve histopathology, and (5) brain MR spectroscopy. Results Eleven patients had a sensory-motor demyelinating neuropathy on electrophysiological testing, whereas two patients had normal studies. Sural nerve and CSF (lyso)sulfatide levels strongly correlated with abnormalities in electrophysiological parameters and large myelinated fiber loss in the sural nerve, but there were no associations between (lyso)sulfatide levels and measures of central nervous system (CNS) involvement (GMFM-88 score, SSEP, and MR spectroscopy). Interpretation Nerve and CSF sulfatide and lysosulfatide accumulation provides a marker of disease severity in the PNS only; it does not reflect the extent of CNS involvement by the disease process. The magnitude of the biochemical disturbance produces a continuously graded spectrum of impairments in neurophysiological function and sural nerve histopathology.
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Affiliation(s)
- Christine Í Dali
- Department of Clinical Genetics, Rigshospitalet Copenhagen, Denmark
| | | | - Mohamed H Farah
- Department of Neurology, Johns Hopkins Medical Institutions Baltimore, Maryland
| | - Mihai Moldovan
- Department of Clinical Neurophysiology, Rigshospitalet Copenhagen, Denmark ; Department of Neuroscience and Pharmacology, University of Copenhagen Copenhagen, Denmark
| | - Jan-Eric Månsson
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital Gothenburg, Sweden
| | | | - Morten Dunø
- Department of Clinical Genetics, Rigshospitalet Copenhagen, Denmark
| | - Lotte Risom
- Department of Clinical Genetics, Rigshospitalet Copenhagen, Denmark
| | | | | | | | - Andrea M Corse
- Department of Neurology, Johns Hopkins Medical Institutions Baltimore, Maryland
| | - Christian Krarup
- Department of Clinical Neurophysiology, Rigshospitalet Copenhagen, Denmark ; Department of Neuroscience and Pharmacology, University of Copenhagen Copenhagen, Denmark
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Busso VO, McAuliffe JJ. Intraoperative neurophysiological monitoring in pediatric neurosurgery. Paediatr Anaesth 2014; 24:690-7. [PMID: 24853253 DOI: 10.1111/pan.12431] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/10/2014] [Indexed: 11/30/2022]
Abstract
The use of intraoperative neurophysiological monitoring (IONM) in pediatric neurosurgery is not new; however, its application to a wider range of procedures is a relatively new development. The purpose of this article is to review the physiology underlying the commonly employed IONM modalities and to describe their application to a subset of pediatric neurosurgical procedures.
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Affiliation(s)
- Veronica O Busso
- Department of Anesthesiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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Tedrus GMAS, Fonseca LC. [Somatosensory evoked potential in children with evoked spikes by tapping of the feet or hands on electroencephalogram]. ARQUIVOS DE NEURO-PSIQUIATRIA 2004; 62:449-54. [PMID: 15273842 DOI: 10.1590/s0004-282x2004000300013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
OBJECTIVE To study the characteristics of Somatosensory evoked potential (SEP) cortical components in children with evoked spikes (ES) on EEG. METHOD The children were aged 7-12 years, had normal neurological examination and neuropsychomotor development, and did not present signs/symptoms of CNS lesions. Data were compared within a group of 20 "normal" children. RESULTS The amplitude of the cortical components N75 and P98, obtained by posterior tibial nerve stimulation, was higher in ES groups as compared with the normal group. CONCLUSION High amplitude SEP (N75 and P98) has higher values in the group of children with ES than in the normal group. The exact mechanism involved in the genesis of ES and high amplitude SEP is not clear yet. A possible mechanism would be focal cortical hyperexcitability related to functional activity. No difference was observed in SEP components in children with ES considering occurrence or not of epilepsy. Therefore, SEP does not bring elements to distinguish between the groups suffering or not epilepsy.
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Affiliation(s)
- Gloria M A S Tedrus
- Faculdade de Medicina Pontifícia Universidade Católica de Campinas, Campinas SP, Brasil.
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Limperopoulos C, Majnemer A, Rosenblatt B, Shevell M, Rohlicek C, Tchervenkov C. Multimodality evoked potential findings in infants with congenital heart defects. J Child Neurol 1999; 14:702-7. [PMID: 10593545 DOI: 10.1177/088307389901401103] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Evoked potentials are sensitive prognostic tools in young infants at risk for developmental disability. The objective of this prospective study was to determine whether infants with congenital heart defects demonstrate evoked potential abnormalities prior to or following open heart surgery, and to examine the association between these abnormalities and developmental status 1 year following surgery. A consecutive series of newborns (less than 1 month old) and infants (1 month to 2 years old) were recruited. Somatosensory and brain stem auditory evoked potentials were carried out before or after cardiac surgery, or both. One year later, neurologic examination and standardized measures of motor performance and functional independence were carried out. Twenty-seven newborns and 31 infants underwent perioperative somatosensory evoked potential recordings. Results indicate that perioperative somatosensory evoked potential abnormalities were common in newborns (41%) but not in infants (13%) with congenital heart defects. Brainstem conduction times were within normal limits in all subjects; however, 32% presented with mild elevations in hearing thresholds. All newborns with abnormal somatosensory evoked potentials had abnormal neurologic examinations both perioperatively and again 1 year after open heart surgery. Moreover, standardized developmental assessments 1 year following surgery indicate that all newborns with somatosensory evoked potential abnormalities had developmental deficits in one or more domains. Somatosensory evoked potential abnormalities in the perioperative period are common in newborns with congenital heart defects, and are strongly predictive of persistent developmental delay later.
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Affiliation(s)
- C Limperopoulos
- School of Physical and Occupational Therapy, McGill University-Montreal Children's Hospital, QC
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Abstract
Cortical posterior tibial somatosensory (SSEP) responses were reliably recorded from 67 infants of 33 weeks gestation or less who had normal neurological outcome at 24 months corrected age. Cross-sectional and longitudinal data did not show a change in waveform morphology with advancing gestation or postnatal age. The latency of the first cortical component shortened as maturation increased. This study provides normative data for the peak component waveforms of the response in very preterm infants. The role of the posterior tibial SSEP in the prediction of functional brain injury in this high risk population can now be determined.
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Affiliation(s)
- A A Pike
- Department of Child Health, St. Michael's Hospital, Bristol, UK
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9
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Majnemer A, Rosenblatt B. Evoked potentials as predictors of outcome in neonatal intensive care unit survivors: review of the literature. Pediatr Neurol 1996; 14:189-95. [PMID: 8736401 DOI: 10.1016/0887-8994(96)00049-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Neonatal intensive care unit survivors are at substantial risk for a range of neurodevelopmental sequelae, and therefore a variety of clinical diagnostic techniques have been evaluated as predictors of outcome. We summarize the prognostic value of evoked potentials in newborns at risk. A review of the literature reveals that brainstem conduction abnormalities in auditory brainstem evoked potentials are associated with neuromotor impairment; however, there are many false negative studies. Visual evoked potentials are highly accurate in predicting neurologic deficits in early childhood in asphyxiated term neonates. Sensitivity and specificity are consistently high for somatosensory evoked potentials in term newborns; however, correlations with outcome in premature infants is controversial. Several studies have compared neonatal findings on neuroimaging studies and evoked potentials, and concordant results between these two tests are highly predictive. However, neurologic sequelae often can most accurately be predicted by visual or somatosensory evoked potentials. Evoked potentials may therefore be a useful adjunct to the clinical investigation and prognostication of outcome in the high risk newborn.
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Affiliation(s)
- A Majnemer
- School of Physical and Occupational Therapy, Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
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Majnemer A, Rosenblatt B. Prediction of outcome at school entry in neonatal intensive care unit survivors, with use of clinical and electrophysiologic techniques. J Pediatr 1995; 127:823-30. [PMID: 7472846 DOI: 10.1016/s0022-3476(95)70183-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To determine the predictive value of multimodality evoked potentials as well as the neonatal neurobehavioral assessment in neonatal intensive care unit survivors at school entry. STUDY DESIGN In this prospective study, healthy (n = 24) and high-risk newborn infants (n = 78) were assessed in the newborn period with auditory brain-stem responses (ABRs) and somatosensory evoked potentials (SEPs), as well as the Einstein Neonatal Neurobehavioral Assessment Scale (ENNAS). Healthy and high-risk newborn infants were assessed in a blind fashion at 1, 3, and 5 years of age by a psychologist and a pediatric neurologist. Of those healthy (all 24) and high-risk newborn infants (72/78) with a neonatal ABR, SEP, or both, 62.5% were assessed at 5 years of age with the Wechsler Preschool and Primary Scale of intelligence, the Beery-Buktenica Test of Visual-Motor Integration, the Griffiths Locomotor Subscale, and neurologic examination. Chi-square analyses were carried out on neonatal and outcome measures, and sensitivity, specificity, and predictive values for each of the neonatal tests were ascertained. RESULTS The ENNAS and the ABR had good negative predictive value for cognitive (85.7% to 93.3%), locomotor (83.3%), and visual-motor (91.4% to 100%) performance. The ABR had good specificity, whereas the ENNAS was more sensitive. The SEP was an excellent prognostic tool, with high sensitivity (100%) and specificity (80% to 81.3%) for motor as well as cognitive domains. All infants with normal SEPs had favorable outcomes, whereas those with absent potentials did poorly. The SEP abnormalities were associated with findings on neurologic examination in all cases. CONCLUSIONS Normal neonatal evoked potentials and ENNAS are associated with favorable outcomes. The SEP most accurately predicts neurodevelopmental status at school entry.
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Affiliation(s)
- A Majnemer
- School of Physical and Occupational Therapy, Montreal Children's Hospital, McGill University, Quebec, Canada
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Harbord MG, Weston PF. Somatosensory evoked potentials predict neurologic outcome in full-term neonates with asphyxia. J Paediatr Child Health 1995; 31:148-51. [PMID: 7794618 DOI: 10.1111/j.1440-1754.1995.tb00765.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To investigate the ability of somatosensory evoked potentials (SSEP) to predict neurologic outcome in term neonates with birth asphyxia. METHODOLOGY Upper limb SSEP were performed on nine infants of 1-7 weeks of age who had perinatal asphyxia and an encephalopathy still present at 7 days of age. Comparison was made between the cranial ultrasound, electroencephalogram (EEG), SSEP and neurologic outcome at 9-36 months. RESULTS Normal SSEP were found in four infants, all of whom were normal on neurologic follow up at 9-12 months. Neonatal EEG performed on two out of four of these infants were also normal, while cerebral oedema was seen on cranial ultrasound in three of the four studies. No SSEP response was seen initially in three infants, all of whom had adverse outcomes (one death, two with spastic diplegia). In contrast, their neonatal EEG had shown normal background rhythms, while two of the three cranial ultrasounds revealed oedema. For two infants the initial SSEP was absent over one hemisphere and just present over the other. Both children were abnormal on follow up at 10-12 months but did not have a hemiparesis. CONCLUSIONS Upper limb SSEP appear more sensitive than EEG or cranial ultrasounds in predicting the short term neurologic outcome of neonates with asphyxia.
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Affiliation(s)
- M G Harbord
- Department of Paediatrics, Flinders Medical Centre, Bedford Park, Australia
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Mercuri E, von Siebenthal K, Daniëls H, Guzzetta F, Casaer P. Multimodality evoked responses in the neurological assessment of the newborn. Eur J Pediatr 1994; 153:622-31. [PMID: 7957418 DOI: 10.1007/bf02190680] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In recent years increased attention has been devoted to evoked potentials (EP) in newborns. This paper reviews the literature and data from our research group in an attempt to assess the diagnostic and prognostic value of evoked responses in the first weeks of life and their use in different age-specific clinical conditions. The results show that EP are a very sensitive measure of the integrity of the sensory pathways. They make it possible to follow normal physiological maturation and the abnormalities of development resulting from neurological lesions. Repeated measurements of visual evoked potentials and somatosensorial evoked potential are prognostically useful in term infants, but seem much more limited in preterm newborns in predicting neurodevelopmental outcome.
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Affiliation(s)
- E Mercuri
- Department of Paediatrics, University Hospital Gasthuisberg, Leuven, Belgium
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Leinonen L, Sams M, Heiskala H, Klippi A, Korhonen AM, Hakapää M. Cortical sensory evoked potentials and communicative forebrain functions. Brain Dev 1994; 16:32-9. [PMID: 8059926 DOI: 10.1016/0387-7604(94)90110-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Cortical evoked potentials were measured to visual, auditory and somatosensory stimuli in 20 subjects with serious neurodevelopmental impairments due to various etiologies. The results were compared with behavioral observations to find out whether the absence/presence of the responses corresponded to the level of social functioning. No cortical evoked potentials were elicited in two subjects, responses to the stimulation of one modality were missing in three subjects (retinal b-waves and brainstem auditory and somatosensory evoked potentials were, however, preserved in them). No communicative behavior was observed in subjects with absent responses. Ten subjects had marked deviations in the evoked potentials, the behavioral observations in them, ranging from no communication to sentenced speech. Five subjects had normal response patterns and they showed a great variety of communicative skills, including speech. The results support the view that bilateral loss of cortical somatosensory, visual, and auditory evoked potentials is a sign of loss of neural substrates of communication.
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Affiliation(s)
- L Leinonen
- Department of Physiology, University of Helsinki, Finland
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Barnet AB, Weiss IP, Shaer C. Evoked potentials in infant brainstem syndrome associated with Arnold-Chiari malformation. Dev Med Child Neurol 1993; 35:42-8. [PMID: 8449379 DOI: 10.1111/j.1469-8749.1993.tb11550.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This study evaluated the contribution of brainstem auditory evoked potentials (BAEPs) and median nerve somatosensory evoked potentials (SEPs) to the assessment of brainstem dysfunction in infants with myelomeningocele and Arnold-Chiari malformation. 16 infants under one year of age were studied. Six had infant brainstem syndrome (IBS). 11 had abnormally prolonged I-V interwave latency (brainstem transmission time, BSTT); BSTT did not differentiate those patients with and without IBS. The cortical 'N20' component of the median-nerve SEPs was absent or had low amplitude and prolonged latency in all six patients with clinical signs of brainstem dysfunction and in four without. Median-nerve SEPs were normal in the patients without IBS. There was a significant difference between patients with and without IBS. Median-nerve SEPs may be a helpful measure of brainstem function in infants with Arnold-Chiari malformation.
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Affiliation(s)
- A B Barnet
- George Washington University School of Medicine and Health Sciences, Washington, DC
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Affiliation(s)
- J B Bodensteiner
- Department of Neurology, West Virginia University, Morgantown 26506
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Majnemer A, Rosenblatt B, Riley PS. Prognostic significance of multimodality evoked response testing in high-risk newborns. Pediatr Neurol 1990; 6:367-74. [PMID: 2073299 DOI: 10.1016/0887-8994(90)90002-i] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Exposure to hypoxic-ischemic events in fetal or neonatal life may lead to permanent brain damage and subsequent neurodevelopmental deficits. Clinical and diagnostic tools have been somewhat helpful in identifying an at-risk group, particularly those patients sustaining significant neurologic sequelae. In this prospective study, the prognostic significance of multimodality evoked responses in high-risk newborns was examined. A group of 44 high-risk newborns, as well as 14 healthy newborns, were tested during the newborn period with auditory brainstem responses and somatosensory evoked responses; these tests were repeated at 2 and 6 months corrected age. A neonatal neurologic examination, the Einstein Neonatal Neurobehavioral Assessment Scale, was also conducted. At 1 year corrected age, both groups were assessed in a blind fashion by a pediatric neurologist and a psychologist to determine neurodevelopmental outcome. Results indicated that somatosensory evoked response abnormalities in particular predict an abnormal neurologic status at 1 year of age. Abnormalities that persisted or worsened correlated with severe neurologic impairment, whereas an abnormal somatosensory evoked response that improved or normalized in infancy was associated with mild to moderate neurologic sequelae. Increased brainstem conduction in the auditory brainstem responses was also associated with neurologic sequelae. Normal findings from auditory brainstem responses and somatosensory evoked responses predicted normal developmental scores in all areas, as well as a normal neurologic outcome at 1 year with negative predictive powers ranging from 85-100%. Evoked response testing appears to be an important adjunct to the neurologic investigation of high-risk newborns.
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MESH Headings
- Asphyxia Neonatorum/diagnosis
- Asphyxia Neonatorum/physiopathology
- Brain Damage, Chronic/diagnosis
- Brain Damage, Chronic/physiopathology
- Brain Stem/physiopathology
- Cerebral Cortex/physiopathology
- Electroencephalography/instrumentation
- Evoked Potentials, Auditory, Brain Stem/physiology
- Evoked Potentials, Somatosensory/physiology
- Fetal Hypoxia/diagnosis
- Fetal Hypoxia/physiopathology
- Follow-Up Studies
- Humans
- Hypoxia, Brain/diagnosis
- Hypoxia, Brain/physiopathology
- Infant
- Infant, Low Birth Weight/physiology
- Infant, Newborn
- Infant, Small for Gestational Age/physiology
- Neurologic Examination
- Risk Factors
- Signal Processing, Computer-Assisted/instrumentation
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Affiliation(s)
- A Majnemer
- Department of Occupational Therapy, Montreal Children's Hospital, Quebec, Canada
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Pierrat V, de Vries LS, Minami T, Casaer P. Somatosensory evoked potentials and adaptation to extrauterine life: a longitudinal study. Brain Dev 1990; 12:376-9. [PMID: 2240457 DOI: 10.1016/s0387-7604(12)80068-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In order to compare longitudinal data with existing cross sectional extrauterine life data on somatosensory evoked potentials (SEPs), two groups of appropriate for gestational age optimal premature infants were studied. Group A consisted of 8 infants born between 34 and 36 weeks gestational age (GA). In this group, SEPs were recorded within 24 hours after delivery and then every 48-72 hours until discharge. Group B consisted of 7 infants born between 29 and 33 weeks GA. In these infants, SEPs were recorded at weekly intervals from the second week onwards. In group A, a marked decreased in the N1 latency was seen during the first week of life. Six infants had initial values above the normal range. During the second week of life this decrease paralleled the cross sectional data. In group B all the infants had a N1 latency within the normal range and the longitudinal data paralleled the cross sectional data. These findings must be taken into consideration when SEPs are used to assess the neurological integrity of the newborn during the first week of life.
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Affiliation(s)
- V Pierrat
- Developmental Neurology Research Unit, Katholieke Universiteit Leuven, Belgium
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