2014
Development of a duplex-derived velocity risk prediction model of disease progression in patients with moderate asymptomatic carotid artery stenosis
Hicks CW, Canner JK, Arhuidese I, Glebova NO, Schneider E, Qazi U, Perler B, Malas MB. Development of a duplex-derived velocity risk prediction model of disease progression in patients with moderate asymptomatic carotid artery stenosis. Journal Of Vascular Surgery 2014, 60: 1585-1592. PMID: 25238724, DOI: 10.1016/j.jvs.2014.08.056.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overArea Under CurveAsymptomatic DiseasesBlood Flow VelocityCarotid Artery, CommonCarotid Artery, InternalCarotid StenosisChi-Square DistributionDecision Support TechniquesDisease ProgressionFemaleHumansMaleMiddle AgedMultivariate AnalysisPredictive Value of TestsProportional Hazards ModelsRegional Blood FlowRetrospective StudiesRisk AssessmentRisk FactorsROC CurveTime FactorsUltrasonography, Doppler, DuplexConceptsAsymptomatic carotid artery stenosisICA/CCA ratioCarotid artery stenosisInternal carotid arteryDisease progressionEnd-diastolic velocityPeak systolic velocityRisk prediction modelCCA ratioArtery stenosisSystolic velocityRisk factorsInitial peak systolic velocityProportional hazards regression modelsHigh-risk patientsRisk of progressionRisk-stratify patientsHazards regression modelsSignificant independent predictorsICA/CCACharacteristic curve analysisClinical prediction modelCarotid artery ratioIndependent predictorsDuplex imaging
2013
The effect of ballooning following carotid stent deployment on hemodynamic stability
Qazi U, Obeid T, Enwerem N, Schneider E, White J, Freischlag J, Perler B, Malas M. The effect of ballooning following carotid stent deployment on hemodynamic stability. Journal Of Vascular Surgery 2013, 59: 756-760.e1. PMID: 24342066, DOI: 10.1016/j.jvs.2013.09.027.Peer-Reviewed Original ResearchConceptsCarotid artery stentingCoronary artery diseaseRecent myocardial infarctionHemodynamic depressionHemodynamic instabilityHemodynamic stabilitySymptomatic statusArtery diseaseMyocardial infarctionStent stenosisMajor adverse cardiovascular eventsCarotid stent deploymentPrevious carotid endarterectomyAdverse cardiovascular eventsPrimary end pointTertiary care centerLength of stayRisk of intraLong-term patencyHigh-risk statusGreater luminal diameterLogistic regression modelsBinary logistic regression modelCardiovascular eventsLack of evidenceHispanic ethnicity is associated with increased costs after carotid endarterectomy and carotid stenting in the United States
Propper B, Black J, Schneider E, Lum Y, Malas M, Arnold M, Abularrage C. Hispanic ethnicity is associated with increased costs after carotid endarterectomy and carotid stenting in the United States. Journal Of Surgical Research 2013, 184: 644-650. PMID: 23582759, DOI: 10.1016/j.jss.2013.03.057.Peer-Reviewed Original ResearchConceptsCarotid artery stentingTotal hospital chargesCarotid endarterectomyHospital chargesHispanic ethnicityBlack patientsUnivariate analysisOperative volumeCost of CEAHospital operative volumeSurgeon operative volumesLow-volume hospitalsNationwide Inpatient SampleCarotid artery stenosisICD-9 codesLow-volume surgeonsHigh-risk statusOnly Hispanic ethnicityPostoperative complicationsCarotid revascularizationSymptomatic statusArtery stentingPrimary outcomeSymptomatic presentationArtery stenosis