2021
Trends in ICD Implantations and in-Hospital Outcomes After DOJ Investigation
Bourdillon PM, Parzynski CS, Minges KE, Curtis JP, Desai NR. Trends in ICD Implantations and in-Hospital Outcomes After DOJ Investigation. Journal Of Cardiac Failure 2021, 28: 154-160. PMID: 34628015, DOI: 10.1016/j.cardfail.2021.09.010.Peer-Reviewed Original ResearchConceptsHospital adverse eventsHospital outcomesAdverse eventsHeart failureMyocardial infarctionRecent acute myocardial infarctionPlacement of ICDsPrimary prevention ICDsAdverse event ratesRecent myocardial infarctionAcute myocardial infarctionHigh mortality rateICD implantationRecent diagnosisMortality ratePatientsICDInfarctionHospitalOutcomesRapid reductionUse of devicesFailureSpecific reasonsCriteria
2020
Mortality and readmission in non-ischemic compared with ischemic cardiomyopathies after implantable cardioverter-defibrillator implantation
Freeman J, Bjerre J, Parzynski C, Minges K, Ahmad T, Desai N, Enriquez A, Spatz E, Friedman D, Curtis J, Hlatky M, Higgins A. Mortality and readmission in non-ischemic compared with ischemic cardiomyopathies after implantable cardioverter-defibrillator implantation. European Heart Journal 2020, 41: ehaa946.0788. DOI: 10.1093/ehjci/ehaa946.0788.Peer-Reviewed Original ResearchNon-ischemic cardiomyopathyImplantable cardioverter defibrillator implantationPrimary prevention ICDsCardioverter-defibrillator implantationIschemic cardiomyopathyICM patientsNational Cardiovascular Data Registry ICD RegistryCox proportional hazards regression modelPrimary prevention ICD implantationLeft ventricular ejection fractionProportional hazards regression modelsOne-year mortalityHeart failure readmissionVentricular ejection fractionKaplan-Meier curvesHazards regression modelsRisk of mortalityMedian followCause readmissionICD implantationEjection fractionHeart failureHospital readmissionICD RegistryPatient subgroupsComparison of Mortality and Readmission in Non-Ischemic Versus Ischemic Cardiomyopathy After Implantable Cardioverter-Defibrillator Implantation
Higgins AY, Bjerre J, Parzynski CS, Minges KE, Ahmad T, Desai NR, Enriquez A, Spatz ES, Friedman DJ, Curtis JP, Hlatky MA, Freeman JV. Comparison of Mortality and Readmission in Non-Ischemic Versus Ischemic Cardiomyopathy After Implantable Cardioverter-Defibrillator Implantation. The American Journal Of Cardiology 2020, 133: 116-125. PMID: 32862971, DOI: 10.1016/j.amjcard.2020.07.035.Peer-Reviewed Original ResearchConceptsNon-ischemic cardiomyopathyImplantable cardioverter defibrillator implantationCardioverter-defibrillator implantationICM patientsIschemic cardiomyopathyNational Cardiovascular Data Registry ICD RegistryCox proportional hazards regression modelPrimary prevention ICD implantationLeft ventricular ejection fractionProportional hazards regression modelsPrimary prevention ICDsRetrospective cohort studyVentricular ejection fractionKaplan-Meier curvesHazards regression modelsRisk of mortalityComparison of mortalityMedian followCohort studyICD implantationEjection fractionHeart failureHospital readmissionICD RegistryPatient subgroups
2018
Periprocedural Risk and Survival after ICD Placement in Patients with Advanced Heart Failure
Fudim M, Parzynski C, Pokorney S, Ambrosy A, Friedman D, Curtis J, Fonarow G, Masoudi F, Hernandez A, Al-Khatib S. Periprocedural Risk and Survival after ICD Placement in Patients with Advanced Heart Failure. Journal Of Cardiac Failure 2018, 24: s63. DOI: 10.1016/j.cardfail.2018.07.275.Peer-Reviewed Original ResearchAdvanced heart failureOrthotopic heart transplantNYHA class IV symptomsClass IV symptomsPrimary prevention ICDsPeriprocedural complication rateHeart failureInitial ICDHF patientsComplication rateICD RegistryPrimary preventionCardiac arrestNational Cardiovascular Data Registry ICD RegistryDiagnosis of HFCause survival ratesICD/CRTNYHA class IVAdvanced HF patientsIschemic heart diseaseAdditional prospective researchSudden cardiac deathCRT-D devicesSudden cardiac arrestCox hazard modelAssociation of the US Department of Justice Investigation of Implantable Cardioverter-Defibrillators and Devices Not Meeting the Medicare National Coverage Determination, 2007-2015
Desai NR, Bourdillon PM, Parzynski CS, Brindis RG, Spatz ES, Masters C, Minges KE, Peterson P, Masoudi FA, Oetgen WJ, Buxton A, Zipes DP, Curtis JP. Association of the US Department of Justice Investigation of Implantable Cardioverter-Defibrillators and Devices Not Meeting the Medicare National Coverage Determination, 2007-2015. JAMA 2018, 320: 63-71. PMID: 29971398, PMCID: PMC6583049, DOI: 10.1001/jama.2018.8151.Peer-Reviewed Original ResearchConceptsPrimary prevention ICDsNon-Medicare beneficiariesAbsolute decreaseNational Cardiovascular Data Registry ICD RegistrySerial cross-sectional analysisStudy periodImplantable cardioverter defibrillatorRelative decreaseCross-sectional analysisProportion of devicesInitial ICDICD RegistryPrimary preventionCardioverter defibrillatorMAIN OUTCOMEMedicare beneficiariesUS hospitalsHospital groupHospitalICDMore rapid decreasesModest decreaseDepartmentMedicareUS Department
2017
Seattle Heart Failure and Proportional Risk Models Predict Benefit From Implantable Cardioverter-Defibrillators
Bilchick KC, Wang Y, Cheng A, Curtis JP, Dharmarajan K, Stukenborg GJ, Shadman R, Anand I, Lund LH, Dahlström U, Sartipy U, Maggioni A, Swedberg K, O’Conner C, Levy WC. Seattle Heart Failure and Proportional Risk Models Predict Benefit From Implantable Cardioverter-Defibrillators. Journal Of The American College Of Cardiology 2017, 69: 2606-2618. PMID: 28545633, PMCID: PMC5502749, DOI: 10.1016/j.jacc.2017.03.568.Peer-Reviewed Original ResearchConceptsSeattle Heart Failure ModelSeattle Proportional Risk ModelNational Cardiovascular Data RegistryPrimary prevention ICDsHeart failureSudden deathCause mortalitySurvival benefitMultivariable Cox proportional hazards regressionCox proportional hazards regressionProportional riskProportional hazards regressionRecent clinical trialsHeart failure modelProportional risk modelControl patientsOverall survivalVentricular arrhythmiasHazards regressionICD benefitClinical trialsCardioverter defibrillatorLarge cohortHigh riskData registry
2015
Defibrillator implantations for primary prevention in the United States: Inappropriate care or inadequate documentation: Insights from the National Cardiovascular Data ICD Registry
Kaiser DW, Tsai V, Heidenreich PA, Goldstein MK, Wang Y, Curtis J, Turakhia MP, Registry C. Defibrillator implantations for primary prevention in the United States: Inappropriate care or inadequate documentation: Insights from the National Cardiovascular Data ICD Registry. Heart Rhythm 2015, 12: 2086-2093. PMID: 25982720, PMCID: PMC4770888, DOI: 10.1016/j.hrthm.2015.05.010.Peer-Reviewed Original ResearchConceptsMulticenter Unsustained Tachycardia TrialMulticenter Automatic Defibrillator Implantation TrialICD RegistryPrimary preventionICD implantationInclusion criteriaNational Cardiovascular Data Registry ICD RegistryMultivariate analysisImplantable cardioverter defibrillator implantationAtrioventricular conduction diseaseFirst-time ICDPrimary prevention ICDsPrior cardiac transplantationHeart Failure TrialPrimary prevention trialsProportion of patientsCardioverter-defibrillator implantationAppropriate use criteriaSudden cardiac deathCardiac transplantationDefibrillator implantationMADIT-IIPatient characteristicsYounger patientsCardiac death
2013
Survival of Patients Receiving a Primary Prevention Implantable Cardioverter-Defibrillator in Clinical Practice vs Clinical Trials
Al-Khatib SM, Hellkamp A, Bardy GH, Hammill S, Hall WJ, Mark DB, Anstrom KJ, Curtis J, Al-Khalidi H, Curtis LH, Heidenreich P, Peterson ED, Sanders G, Clapp-Channing N, Lee KL, Moss AJ. Survival of Patients Receiving a Primary Prevention Implantable Cardioverter-Defibrillator in Clinical Practice vs Clinical Trials. JAMA 2013, 309: 55-62. PMID: 23280225, PMCID: PMC3638257, DOI: 10.1001/jama.2012.157182.Peer-Reviewed Original ResearchConceptsPrimary prevention ICDsPrimary prevention clinical trialsTrial-eligible patientsSurvival of patientsPrevention clinical trialsClinical trialsICD RegistrySCD-HeFTClinical practiceRegistry patientsMADIT-IISimilar patientsNational Cardiovascular Data Registry ICD RegistryPrimary prevention implantable cardioverter defibrillatorsSurvival rateImplantable cardioverter-defibrillator therapyMADIT II criteriaMADIT II patientsSCD-HeFT criteriaCardioverter-defibrillator therapyClinical trial patientsLarge national registryRandomized clinical trialsProportional hazards modelImplantable cardioverter defibrillator
2012
Electrophysiology Studies in Patients Undergoing ICD Implantation: Findings from the NCDR®
CHENG A, WANG Y, BERGER RD, CALKINS H, BUXTON AE, CURTIS JP, LAMPERT R. Electrophysiology Studies in Patients Undergoing ICD Implantation: Findings from the NCDR®. Pacing And Clinical Electrophysiology 2012, 35: 912-918. PMID: 22670627, DOI: 10.1111/j.1540-8159.2012.03441.x.Peer-Reviewed Original ResearchConceptsICD implantationElectrophysiology studyEjection fractionSudden deathDe novo ICD implantationSecondary prevention ICD recipientsSudden death risk stratificationLeft ventricular ejection fractionImplantable cardioverter defibrillator implantationNarrow QRS intervalPrimary prevention ICDsDeath risk stratificationCardioverter-defibrillator implantationCongestive heart failureVentricular ejection fractionHigher ejection fractionHistory of syncopeMonomorphic ventricular tachycardiaLogistic regression analysisFuture ICD therapyHierarchical logistic regression analysisICD therapyClinical characteristicsComplication rateDefibrillator implantation
2010
Regional Variation in the Use of Implantable Cardioverter-Defibrillators for Primary Prevention
Matlock DD, Peterson PN, Heidenreich PA, Lucas FL, Malenka DJ, Wang Y, Curtis JP, Kutner JS, Fisher ES, Masoudi FA. Regional Variation in the Use of Implantable Cardioverter-Defibrillators for Primary Prevention. Circulation Cardiovascular Quality And Outcomes 2010, 4: 114-121. PMID: 21139094, DOI: 10.1161/circoutcomes.110.958264.Peer-Reviewed Original ResearchConceptsPrimary prevention ICDsProportion of patientsTrial inclusion criteriaInclusion criteriaPrimary preventionTrial criteriaPhysician supplyNational Cardiovascular Data RegistryImplantable cardioverter defibrillatorHospital referral regionsRace-adjusted ratesCross-sectional analysisICD implantationICD placementCardioverter defibrillatorReferral regionsData registryPotential overusePatientsICDDeath variesRate ratioService populationGeographic variationRegional variation