2017
Fixed and variable cost of carotid endarterectomy and stenting in the United States: A comparative study
Obeid T, Alshaikh H, Nejim B, Arhuidese I, Locham S, Malas M. Fixed and variable cost of carotid endarterectomy and stenting in the United States: A comparative study. Journal Of Vascular Surgery 2017, 65: 1398-1406.e1. PMID: 28216356, DOI: 10.1016/j.jvs.2016.11.062.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAngioplastyAsymptomatic DiseasesCarotid StenosisChi-Square DistributionDatabases, FactualDecision Support TechniquesEndarterectomy, CarotidFemaleHospital CostsHumansMaleMiddle AgedModels, EconomicPatient SelectionProcess Assessment, Health CarePropensity ScoreRetrospective StudiesStentsTime FactorsTreatment OutcomeUnited StatesConceptsCost of carotid artery stentingSymptomatic patientsHospital costsPropensity score matchingSymptomatic statusScore matchingPremier Perspective databaseCarotid artery stentingComorbidities of patientsStudent's t-testIn-hospital costsActual hospital costsAsymptomatic patientsSurgeon specialtyHospital characteristicsMale patientsCosts of carotid endarterectomyAsymptomatic cohortPerspective databaseArtery stentingPrimary outcomeCarotid endarterectomyPatientsClinical comorbiditiesHospital discharge
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 imagingMortality variability after endovascular versus open abdominal aortic aneurysm repair in a large tertiary vascular center using a Medicare-derived risk prediction model
Hicks C, Black J, Arhuidese I, Asanova L, Qazi U, Perler B, Freischlag J, Malas M. Mortality variability after endovascular versus open abdominal aortic aneurysm repair in a large tertiary vascular center using a Medicare-derived risk prediction model. Journal Of Vascular Surgery 2014, 61: 291-297. PMID: 25154686, DOI: 10.1016/j.jvs.2014.04.078.Peer-Reviewed Original ResearchMeSH KeywordsAgedAortic Aneurysm, AbdominalChi-Square DistributionDecision Support TechniquesEndovascular ProceduresFemaleHumansLogistic ModelsMaleMedicareMultivariate AnalysisOdds RatioPatient SelectionRetrospective StudiesRisk AssessmentRisk FactorsTertiary Care CentersTime FactorsTreatment OutcomeUnited StatesVascular Surgical ProceduresConceptsEndovascular AAA repairTertiary vascular centerOpen AAA repairAAA repairRisk prediction modelOpen repairTertiary centerVascular centersOpen abdominal aortic aneurysm (AAA) repairOpen abdominal aortic aneurysm repairAbdominal aortic aneurysm (AAA) repairAbdominal aortic aneurysm repairPreoperative renal diseasePreoperative risk statusEvaluate 30-day mortalityAortic aneurysm repairHigh-risk patientsMortality risk prediction modelHigh-risk groupMultivariate logistic regressionAortic centersOperative mortalityInfrarenal AAAAneurysm repairLower-volume hospitals