2022
Association of Modified Rankin Scale With Recovery Phenotypes in Patients With Upper Extremity Weakness After Stroke
Erler K, Wu R, DiCarlo J, Petrilli M, Gochyyev P, Hochberg L, Kautz S, Schwamm L, Cramer S, Finklestein S, Lin D. Association of Modified Rankin Scale With Recovery Phenotypes in Patients With Upper Extremity Weakness After Stroke. Neurology 2022, 98: e1877-e1885. PMID: 35277444, PMCID: PMC9109148, DOI: 10.1212/wnl.0000000000200154.Peer-Reviewed Original ResearchConceptsModified Rankin ScaleUpper extremity weaknessMRS scoreStroke trialsFunctional outcomeOutcome measuresMRS levelsExtremity weaknessRankin ScaleMRS outcomesMotor impairmentFuture stroke trialsDaily living statusUpper extremity impairmentMeaningful changeGlobal outcome measuresMeaningful clinical changeIschemic strokeFugl-MeyerGrip strengthMotor phenotypeClinical changesClinical careDaily livingPatients
2020
Amendment on the article “Missing outcome data management in acute stroke trials testing iv thrombolytics: Is there risk of bias?”
Fernandez-Ferro J, Schwamm L, Lyden P, Lees K. Amendment on the article “Missing outcome data management in acute stroke trials testing iv thrombolytics: Is there risk of bias?”. European Stroke Journal 2020, 5: 453-454. PMID: 33598566, PMCID: PMC7856594, DOI: 10.1177/2396987320957188.Peer-Reviewed Original ResearchMissing outcome data management in acute stroke trials testing iv thrombolytics. Is there risk of bias?
Fernandez-Ferro J, Schwamm L, Descalzo M, MacIsaac R, Lyden P, Lees K. Missing outcome data management in acute stroke trials testing iv thrombolytics. Is there risk of bias? European Stroke Journal 2020, 5: 148-154. PMID: 32637648, PMCID: PMC7313360, DOI: 10.1177/2396987320905457.Peer-Reviewed Original ResearchAcute stroke trialsStroke trialsOdds ratioOutcome dataRankin ScaleNon-thrombolysed patientsRankin Scale 90Ischemic stroke patientsInternational Stroke TrialRisk of biasMultiple imputationLast observationOdds ratio estimatesTreatment odds ratiosStroke patientsClinical trialsOutcome comparisonsPatientsTrials
2019
The Mild and Rapidly Improving Stroke Study (MaRISS): Rationale and design
Romano J, Gardener H, Campo-Bustillo I, Khan Y, Riley N, Tai S, Sacco R, Khatri P, Smith E, Schwamm L. The Mild and Rapidly Improving Stroke Study (MaRISS): Rationale and design. International Journal Of Stroke 2019, 14: 983-986. PMID: 31496438, DOI: 10.1177/1747493019873595.Peer-Reviewed Original ResearchConceptsStroke symptomsStroke Impact Scale-16Actual treatment ratesMild ischemic strokePrimary safety outcomeSymptomatic hemorrhagic transformationProportion of patientsThird of patientsProspective observational studyEffect of alteplaseAcute stroke trialsLong-term outcomesPredictors of outcomeAlteplase treatmentHemorrhagic transformationIschemic strokeRankin ScaleSecondary outcomesBarthel IndexPrimary outcomeResidual disabilityStroke presentationRetrospective studyStroke StudyStroke trials
2016
Stroke Treatment Academic Industry Roundtable Recommendations for Individual Data Pooling Analyses in Stroke
Lees K, Khatri P, Alexandrov A, Bivard A, Boltze J, Broderick J, Campbell B, Creighton F, Fiorella D, Furlan A, Gorelick P, Hess D, Kim W, Latour L, Liebeskind D, Luby M, Lyden P, Lynch J, Marshall R, Menon B, Muir K, Palesch Y, Peng H, Pryor K, Mocco J, Rasmussen P, Sacco R, Schwamm L, Smith E, Solberg Y, Vagal A, Warach S, Wechsler L, Wintermark M, Yoo A, Zander K. Stroke Treatment Academic Industry Roundtable Recommendations for Individual Data Pooling Analyses in Stroke. Stroke 2016, 47: 2154-2159. PMID: 27406108, PMCID: PMC4961517, DOI: 10.1161/strokeaha.116.012966.Peer-Reviewed Original ResearchConceptsPooled analysisClinical implicationsClinical trial findingsIndividual patient dataPooled findingsPrespecified subgroupsOngoing trialsStroke trialsTrial findingsTreatment strategiesClinical careIndividual drugsPooling analysisTrial teamSuch drugsClass effectSevere disabilityTrial resultsPatient dataAnalysis planTrialsStatistical adjustmentTreatment effects
2009
Existence of the Diffusion-Perfusion Mismatch within 24 Hours after Onset of Acute Stroke: Dependence on Proximal Arterial Occlusion
Copen W, Rezai Gharai L, Barak E, Schwamm L, Wu O, Kamalian S, Gonzalez R, Schaefer P. Existence of the Diffusion-Perfusion Mismatch within 24 Hours after Onset of Acute Stroke: Dependence on Proximal Arterial Occlusion. Radiology 2009, 250: 878-86. PMID: 19164120, DOI: 10.1148/radiol.2503080811.Peer-Reviewed Original ResearchConceptsProximal arterial occlusionAcute ischemic stroke trialsIschemic stroke trialsAcute strokeArterial occlusionStroke trialsLesion volumePerfusion-weighted magnetic resonance imagesDiffusion-perfusion mismatchMean transit time mapsTransit time mapsHIPAA-compliant studyPAO patientsAngiographic evidenceStroke onsetDose escalationTomographic angiographyEligibility criteriaPatientsInstitutional reviewMagnetic resonance imagesMR angiographyDesmoteplaseSignificant differencesAngiography
2008
Quantitative Assessment of Core/Penumbra Mismatch in Acute Stroke
Schaefer P, Barak E, Kamalian S, Gharai L, Schwamm L, Gonzalez R, Lev M. Quantitative Assessment of Core/Penumbra Mismatch in Acute Stroke. Stroke 2008, 39: 2986-2992. PMID: 18723425, DOI: 10.1161/strokeaha.107.513358.Peer-Reviewed Original ResearchConceptsCT perfusionPatient selectionInfarct coreAcute middle cerebral artery strokeMiddle cerebral artery strokePreferred imaging methodStroke clinical trialsAcute strokeArtery strokeStroke trialsTrial enrollmentClinical trialsLesion volumeMR perfusionIschemic regionBlood volumeTime abnormalitiesVolume thresholdLesion sizeQuantitative CTPerfusionAdvanced MRCT coverageLesionsMR diffusion