2019
Medicare claims can identify post-stroke epilepsy
Moura L, Smith J, Blacker D, Vogeli C, Schwamm L, Hsu J. Medicare claims can identify post-stroke epilepsy. Epilepsy Research 2019, 151: 40-47. PMID: 30780120, PMCID: PMC6640134, DOI: 10.1016/j.eplepsyres.2019.02.002.Peer-Reviewed Original ResearchConceptsElectronic health recordsAccountable care organizationsMedicare claimsCommunity-dwelling elderly individualsPost-stroke epilepsyElderly Medicare beneficiariesClaims-based algorithmPositive predictive valuePioneer Accountable Care OrganizationsDiscrete etiologyNeurologist visitOverall prevalenceMedicare patientsClaims diagnosesPSE diagnosisElderly individualsMedicare beneficiariesPatientsPredictive valueEpilepsyFuture epidemiological surveillanceEpidemiological surveillanceInverse probabilityHealth recordsDiagnosis
2014
Combining MRI with NIHSS Thresholds to Predict Outcome in Acute Ischemic Stroke: Value for Patient Selection
Schaefer P, Pulli B, Copen W, Hirsch J, Leslie-Mazwi T, Schwamm L, Wu O, González R, Yoo A. Combining MRI with NIHSS Thresholds to Predict Outcome in Acute Ischemic Stroke: Value for Patient Selection. American Journal Of Neuroradiology 2014, 36: 259-264. PMID: 25258369, PMCID: PMC4462135, DOI: 10.3174/ajnr.a4103.Peer-Reviewed Original ResearchMeSH KeywordsAgedBrainBrain IschemiaCerebral InfarctionDiffusion Magnetic Resonance ImagingFemaleHumansImage Processing, Computer-AssistedMaleMiddle AgedNational Institutes of Health (U.S.)Patient SelectionPrognosisReperfusionROC CurveSensitivity and SpecificitySeverity of Illness IndexStrokeUnited StatesConceptsPositive predictive valueAcute ischemic strokeLarge patient cohortReperfusion therapyPoor outcomeStroke sidePredictive valueNIHSS scoreIschemic strokeClinical outcomesPatient cohortPrognostic yieldAnterior circulation acute ischemic strokeAcute ischemic stroke patientsImaging thresholdsBeneficial treatment responseDiffusion-perfusion mismatchHigh positive predictive valueIschemic stroke patientsRight-sided strokeLeft-sided strokeUntreated patientsStroke onsetConsecutive patientsPatient selection
2011
CT angiography predicts use of tertiary interventional services in acute ischemic stroke patients
Thomas L, Goldstein J, Hakimelahi R, Chang Y, Yoo A, Schwamm L, Gonzalez R. CT angiography predicts use of tertiary interventional services in acute ischemic stroke patients. International Journal Of Emergency Medicine 2011, 4: 62. PMID: 21967677, PMCID: PMC3203028, DOI: 10.1186/1865-1380-4-62.Peer-Reviewed Original ResearchCerebral artery occlusionProximal cerebral artery occlusionEmergent CT angiographyIschemic stroke patientsCT angiographyProximal occlusionArtery occlusionNegative predictive valuePositive predictive valueIndependent predictorsStroke patientsNeurointerventional servicesInitial NIH Stroke Scale scorePredictive valueConsecutive ischemic stroke patientsAcute ischemic stroke patientsNIH Stroke Scale scoreInterventional servicesMechanical clot retrievalTertiary care interventionsIntra-arterial thrombolysisStroke Scale scoreAcute ischemic strokeTertiary care centerHistorical cohort study
2009
ABC/2 for rapid clinical estimate of infarct, perfusion, and mismatch volumes
Sims J, Gharai L, Schaefer P, Vangel M, Rosenthal E, Lev M, Schwamm L. ABC/2 for rapid clinical estimate of infarct, perfusion, and mismatch volumes. Neurology 2009, 72: 2104-2110. PMID: 19528517, PMCID: PMC2697964, DOI: 10.1212/wnl.0b013e3181aa5329.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overBrainBrain InfarctionCerebral ArteriesCerebral HemorrhageCerebrovascular CirculationComputer SimulationDiagnosis, DifferentialDiffusion Magnetic Resonance ImagingFemaleHumansImage Processing, Computer-AssistedMaleMiddle AgedNerve Fibers, MyelinatedPredictive Value of TestsRetrospective StudiesSeverity of Illness IndexTime Factors
2003
Whole-Brain CT Perfusion Measurement of Perfused Cerebral Blood Volume in Acute Ischemic Stroke: Probability Curve for Regional Infarction
Hunter G, Silvennoinen H, Hamberg L, Koroshetz W, Buonanno F, Schwamm L, Rordorf G, Gonzalez R. Whole-Brain CT Perfusion Measurement of Perfused Cerebral Blood Volume in Acute Ischemic Stroke: Probability Curve for Regional Infarction. Radiology 2003, 227: 725-30. PMID: 12728181, DOI: 10.1148/radiol.2273012169.Peer-Reviewed Original ResearchConceptsAcute ischemic strokeCerebral blood volumeIschemic strokeBlood volumeMajor arterial occlusionLikelihood of infarctionLogistic regression analysisPositive predictive valueCT perfusion measurementsAcute strokeCerebral infarctionArterial occlusionIntracranial hemorrhagePerfusion scanCore infarctionPCBVInfarctionPositive followProbability of survivalRegional infarctionPredictive valuePatientsStrokePerfusion measurementsRegression analysis