2010
Intracortical EEG for the Detection of Vasospasm in Patients with Poor-Grade Subarachnoid Hemorrhage
Stuart RM, Waziri A, Weintraub D, Schmidt MJ, Fernandez L, Helbok R, Kurtz P, Lee K, Badjatia N, Emerson R, Mayer SA, Connolly ES, Hirsch LJ, Claassen J. Intracortical EEG for the Detection of Vasospasm in Patients with Poor-Grade Subarachnoid Hemorrhage. Neurocritical Care 2010, 13: 355-358. PMID: 20652443, DOI: 10.1007/s12028-010-9414-6.Peer-Reviewed Original ResearchConceptsPoor-grade SAH patientsAlpha/delta ratioDetection of vasospasmSAH patientsPoor-grade subarachnoid hemorrhageIntracortical electroencephalographyQuantitative EEG parametersQuantitative EEG analysisAngiographic confirmationAngiographic vasospasmSubarachnoid hemorrhageSustained decreaseVasospasmPatientsBaseline EEGPercent changeDepth electrodesQEEG recordingsLarger studySurface EEGDelta ratioIntracortical EEGEEG parametersAlarm criteriaBaseline
2006
Prognostic significance of continuous EEG monitoring in patients with poor-grade subarachnoid hemorrhage
Claassen J, Hirsch LJ, Frontera JA, Fernandez A, Schmidt M, Kapinos G, Wittman J, Connolly ES, Emerson RG, Mayer SA. Prognostic significance of continuous EEG monitoring in patients with poor-grade subarachnoid hemorrhage. Neurocritical Care 2006, 4: 103-112. PMID: 16627897, DOI: 10.1385/ncc:4:2:103.Peer-Reviewed Original ResearchConceptsModified Rankin ScalePeriodic lateralized epileptiform dischargesSubarachnoid hemorrhageHess gradePoor outcomeEEG findingsCEEG monitoringEpileptiform dischargesPoor-grade subarachnoid hemorrhageMultivariate logistic regression analysisAdmission CT scanPeriodic epileptiform dischargesLogistic regression analysisRankin ScaleIll patientsIntraventricular hemorrhageMRS 4Functional outcomeSleep architectureEEG reactivityCT scanPatientsOutcomesHemorrhageRegression analysis
2005
Continuous EEG Monitoring in Patients With Subarachnoid Hemorrhage
Claassen J, Mayer SA, Hirsch LJ. Continuous EEG Monitoring in Patients With Subarachnoid Hemorrhage. Journal Of Clinical Neurophysiology 2005, 22: 92-98. PMID: 15805808, DOI: 10.1097/01.wnp.0000145006.02048.3a.Peer-Reviewed Original ResearchConceptsContinuous EEG monitoringSubarachnoid hemorrhageEEG monitoringPoor-grade subarachnoid hemorrhageAdditional diagnostic interventionsQuantitative EEG analysisCEEG findingsCerebral ischemiaNeurological examComatose patientsSAH patientsCEEG monitoringClinical correlatesDiagnostic interventionsClinical examPatientsEEG changesIschemiaSeizuresReversible stageVasospasmHemorrhageRiskLimited utilityEEG analysis
2004
Quantitative continuous EEG for detecting delayed cerebral ischemia in patients with poor-grade subarachnoid hemorrhage
Claassen J, Hirsch LJ, Kreiter KT, Du EY, Connolly ES, Emerson RG, Mayer SA. Quantitative continuous EEG for detecting delayed cerebral ischemia in patients with poor-grade subarachnoid hemorrhage. Clinical Neurophysiology 2004, 115: 2699-2710. PMID: 15546778, DOI: 10.1016/j.clinph.2004.06.017.Peer-Reviewed Original ResearchConceptsPoor-grade subarachnoid hemorrhageDetection of DCISAH patientsSubarachnoid hemorrhageCerebral ischemiaQEEG parametersClinical examHunt-Hess grade 4Poor-grade SAH patientsPost-operative day 2Continuous EEG monitoringInitiation of interventionsAlpha/delta ratioQuantitative EEG parametersNeurological morbidityDCI patientsNeuro-ICUMedian decreasePatientsDay 1EEG monitoringDay 2Day 14Day 4Reasonable specificity