2023
Variation in hospital use of cardiac resynchronization therapy-defibrillator among eligible patients and association with clinical outcomes
Chui P, Lan Z, Freeman J, Enriquez A, Khera R, Akar J, Masoudi F, Ong E, Curtis J. Variation in hospital use of cardiac resynchronization therapy-defibrillator among eligible patients and association with clinical outcomes. Heart Rhythm 2023, 20: 1000-1008. PMID: 36963741, DOI: 10.1016/j.hrthm.2023.03.022.Peer-Reviewed Original ResearchMeSH KeywordsAgedCardiac Resynchronization TherapyDefibrillators, ImplantableHeart FailureHospitalsHumansMedicareTreatment OutcomeUnited StatesConceptsEligible patientsICD RegistryCardiac resynchronizationNational Cardiovascular Data Registry ICD RegistryCRT-D implantationCRT-D useHospital-level outcomesStrong guideline recommendationsHospital-level variationPatient-level outcomesIntraclass correlation coefficientQuality improvement effortsHospital mortalityGuideline indicationsReadmission ratesSelect patientsClinical outcomesGuideline recommendationsHospital variationHospital ratesUse of CRTHospital levelHospital usePatientsCase mix
2022
Longitudinal Outcomes of Subcutaneous or Transvenous Implantable Cardioverter-Defibrillators in Older Patients
Friedman DJ, Qin L, Parzynski C, Heist EK, Russo AM, Ranasinghe I, Zeitler EP, Minges KE, Akar JG, Freeman JV, Curtis JP, Al-Khatib SM. Longitudinal Outcomes of Subcutaneous or Transvenous Implantable Cardioverter-Defibrillators in Older Patients. Journal Of The American College Of Cardiology 2022, 79: 1050-1059. PMID: 35300816, DOI: 10.1016/j.jacc.2021.12.033.Peer-Reviewed Original ResearchMeSH KeywordsAgedArrhythmias, CardiacDeath, Sudden, CardiacDefibrillators, ImplantableFemaleHumansMaleMedicareRetrospective StudiesTreatment OutcomeUnited StatesConceptsOlder patientsCause readmissionS-ICDNational Cardiovascular Data Registry ICD RegistryDevice removalTransvenous implantable cardioverter defibrillatorTV-ICD patientsRisk of deathS-ICD patientsService Medicare beneficiariesAnderson-Gill modelsImplantable cardioverter defibrillatorRepresentative national cohortCompeting-risks modelTV-ICDCardiovascular readmissionCause mortalityICD implantationYounger patientsICD RegistryNonfatal outcomesTransvenous ICDAtrial fibrillationNational cohortCardioverter defibrillator
2021
Risk and predictors of mortality after implantable cardioverter-defibrillator implantation in patients with sarcoid cardiomyopathy
Higgins AY, Annapureddy AR, Wang Y, Minges KE, Bellumkonda L, Lampert R, Rosenfeld LE, Jacoby DL, Curtis JP, Miller EJ, Freeman JV. Risk and predictors of mortality after implantable cardioverter-defibrillator implantation in patients with sarcoid cardiomyopathy. American Heart Journal 2021, 246: 21-31. PMID: 34968442, DOI: 10.1016/j.ahj.2021.12.011.Peer-Reviewed Original ResearchMeSH KeywordsAtrial FibrillationDeath, Sudden, CardiacDefibrillators, ImplantableHeart FailureHumansMyocarditisRetrospective StudiesRisk FactorsSarcoidosisStroke VolumeVentricular Function, LeftConceptsNon-ischemic cardiomyopathyAtrial fibrillation/flutterChronic lung diseaseCardiac sarcoidosisHeart failureCS patientsNICM patientsICD implantationLung diseaseNew York Heart Association class III heart failureNational Cardiovascular Data Registry ICD RegistryNYHA class IV heart failureClass III heart failureClass IV heart failureImplantable cardioverter defibrillator implantationKaplan-Meier survival curvesCox proportional hazards modelPredictors of mortalityCardioverter-defibrillator implantationVentricular ejection fractionMultivariable logistic regressionPrior ventricular arrhythmiasProportional hazards modelRate of deathTime of implantation
2020
Survival Following Implantable Cardioverter‐Defibrillator Implantation in Patients With Amyloid Cardiomyopathy
Higgins AY, Annapureddy AR, Wang Y, Minges KE, Lampert R, Rosenfeld LE, Jacoby DL, Curtis JP, Miller EJ, Freeman JV. Survival Following Implantable Cardioverter‐Defibrillator Implantation in Patients With Amyloid Cardiomyopathy. Journal Of The American Heart Association 2020, 9: e016038. PMID: 32867553, PMCID: PMC7726970, DOI: 10.1161/jaha.120.016038.Peer-Reviewed Original ResearchMeSH KeywordsAgedAmyloidosisCardiomyopathiesCase-Control StudiesDefibrillators, ImplantableFemaleHumansMaleMiddle AgedProsthesis ImplantationRegistriesRetrospective StudiesConceptsImplantable cardioverter defibrillator implantationCardioverter-defibrillator implantationNonischemic cardiomyopathyCardiac amyloidosisDiabetes mellitusCerebrovascular diseaseVentricular tachycardiaMultivariable Cox proportional hazards regression modelsCox proportional hazards regression modelProportional hazards regression modelsKaplan-Meier survival curvesCox proportional hazards modelPropensity-matched cohortOutcomes of patientsHazards regression modelsProportional hazards modelCause mortalityICD implantationRenal functionMultivariable analysisConclusions MortalityRisk factorsRegistry dataAmyloid cardiomyopathyHigh riskComparison 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 ResearchMeSH KeywordsAgedCardiomyopathiesDefibrillators, ImplantableFemaleHumansMaleMiddle AgedMyocardial IschemiaPatient ReadmissionRegistriesRetrospective StudiesSurvival RateUnited StatesConceptsNon-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
Ventricular Fibrillation Conversion Testing After Implantation of a Subcutaneous Implantable Cardioverter Defibrillator
Friedman DJ, Parzynski CS, Heist EK, Russo AM, Akar JG, Freeman JV, Curtis JP, Al-Khatib SM. Ventricular Fibrillation Conversion Testing After Implantation of a Subcutaneous Implantable Cardioverter Defibrillator. Circulation 2018, 137: 2463-2477. PMID: 29463509, PMCID: PMC5988932, DOI: 10.1161/circulationaha.117.032167.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedCardiomyopathy, HypertrophicDefibrillators, ImplantableFemaleHumansMaleMiddle AgedRegistriesStroke VolumeVentricular FibrillationConceptsImplantable cardioverter defibrillatorS-ICD implantationLogistic regression analysisInhospital complicationsPatient characteristicsCT testingS-ICDsCardioverter defibrillatorConversion testingPrior implantable cardioverter defibrillatorHigher body mass indexMultivariable logistic regression analysisLarger body surface areaSubcutaneous implantable cardioverter defibrillatorTransvenous implantable cardioverter defibrillatorInhospital adverse eventsLow ejection fractionAvailable patient characteristicsBody mass indexBody surface areaFirst-time recipientsMaximum device outputRegression analysisPredictors of useInsufficient safety marginRemote monitoring of implantable cardiac devices
Ganeshan R, Enriquez AD, Freeman JV. Remote monitoring of implantable cardiac devices. Current Opinion In Cardiology 2018, 33: 20-30. PMID: 29059076, DOI: 10.1097/hco.0000000000000471.Peer-Reviewed Original ResearchMeSH KeywordsAftercareAmbulatory CareAtrial FibrillationCost SavingsDefibrillators, ImplantableEarly DiagnosisHealth ResourcesHospitalizationHumansMonitoring, AmbulatoryMortalityPatient SatisfactionConceptsCardiac implantable electronic devicesPatient outcomesHealth resource utilizationRemote monitoring transmissionsRate of hospitalizationNew practice settingsImplantable cardiac devicesImplantable electronic devicesTreatment guidelinesAtrial fibrillationClinical eventsEmergency departmentPhysician carePatient experienceComprehensive followDose relationshipSuperior outcomesPractice settingsCardiac devicesEarly detectionRecent evidenceCareAppropriate useOutcomesPatientsAssociation of Atrial Fibrillation Clinical Phenotypes with Treatment Patterns and Outcomes: A Multicenter Registry Study
Inohara T, Shrader P, Pieper K, Blanco RG, Thomas L, Singer DE, Freeman JV, Allen LA, Fonarow GC, Gersh B, Ezekowitz MD, Kowey PR, Reiffel JA, Naccarelli GV, Chan PS, Steinberg BA, Peterson ED, Piccini JP. Association of Atrial Fibrillation Clinical Phenotypes with Treatment Patterns and Outcomes: A Multicenter Registry Study. JAMA Cardiology 2018, 3: 54-63. PMID: 29128866, PMCID: PMC5833527, DOI: 10.1001/jamacardio.2017.4665.Peer-Reviewed Original ResearchConceptsAtrial fibrillationAtherosclerotic comorbiditiesMajor bleedingComorbidity clustersNeurological eventsClinical outcomesDevice implantationORBIT-AF II registryPrior coronary artery diseaseAtrial Fibrillation RegistryComorbid behavioral disordersMulticenter registry studyBaseline clinical characteristicsImportance of comorbiditiesBetter Informed TreatmentSinus node dysfunctionCoronary artery diseaseData-driven cluster analysisHemostasis criteriaClinical characteristicsObservational cohortRegistry studyTotal patientsArtery diseaseAtrial size
2017
Long-term morbidity and mortality after implantable cardioverter-defibrillator implantation with procedural complication: A report from the National Cardiovascular Data Registry
Kipp R, Hsu JC, Freeman J, Curtis J, Bao H, Hoffmayer KS. Long-term morbidity and mortality after implantable cardioverter-defibrillator implantation with procedural complication: A report from the National Cardiovascular Data Registry. Heart Rhythm 2017, 15: 847-854. PMID: 28987459, DOI: 10.1016/j.hrthm.2017.09.043.Peer-Reviewed Original ResearchConceptsCause mortalityMedicare beneficiariesICD implantationProcedural complicationsHospital characteristicsMultivariable Cox proportional hazards regression analysisNational Cardiovascular Data Registry ICD RegistryCox proportional hazards regression analysisFirst-time ICD recipientsImplantable cardioverter defibrillator implantationNational Cardiovascular Data RegistryProportional hazards regression analysisKaplan-Meier survival analysisLong-term morbidityPredictors of mortalityCardioverter-defibrillator implantationOccurrence of complicationsRetrospective registry studyAcute procedural complicationsHazards regression analysisLong-term outcomesRisk of mortalityMortality 3 yearsIndex hospitalizationRegistry studyOral anticoagulation management in patients with atrial fibrillation undergoing cardiac implantable electronic device implantation
Black‐Maier E, Kim S, Steinberg BA, Fonarow GC, Freeman JV, Kowey PR, Ansell J, Gersh BJ, Mahaffey KW, Naccarelli G, Hylek EM, Go AS, Peterson ED, Piccini JP, Investigators F. Oral anticoagulation management in patients with atrial fibrillation undergoing cardiac implantable electronic device implantation. Clinical Cardiology 2017, 40: 746-751. PMID: 28543401, PMCID: PMC5638096, DOI: 10.1002/clc.22726.Peer-Reviewed Original ResearchMeSH KeywordsAdministration, OralAgedAged, 80 and overAnticoagulantsAtrial FibrillationCardiac Pacing, ArtificialCardiac Resynchronization TherapyCardiac Resynchronization Therapy DevicesDefibrillators, ImplantableDrug Administration ScheduleDrug SubstitutionElectric CountershockFemaleHemorrhageHumansMaleMiddle AgedPacemaker, ArtificialRegistriesRisk FactorsStrokeTime FactorsTreatment OutcomeConceptsCardiac implantable electronic device implantationCIED implantationNOAC patientsAnticoagulation managementAF patientsAtrial fibrillationDevice implantationOral anticoagulation managementHigher creatinine clearanceManagement of anticoagulationOral anticoagulation therapyBetter Informed TreatmentOral anticoagulant therapyAtrial fibrillation patientsValvular heart diseaseBridging anticoagulationConcomitant aspirinInterrupted warfarinOAC therapyAnticoagulation strategiesAnticoagulation therapyOral anticoagulantsPeriprocedural riskAdverse eventsAnticoagulant therapy
2015
Remote Monitoring and Outcomes in Pacemaker and Defibrillator Patients Big Data Saving Lives?∗
Freeman JV, Saxon L. Remote Monitoring and Outcomes in Pacemaker and Defibrillator Patients Big Data Saving Lives?∗. Journal Of The American College Of Cardiology 2015, 65: 2611-2613. PMID: 25983010, DOI: 10.1016/j.jacc.2015.04.031.Peer-Reviewed Original Research
2013
Use of Evidence-based Cardiac Prevention Therapy Among Outpatients with Atrial Fibrillation
Hess PL, Kim S, Piccini JP, Allen LA, Ansell JE, Chang P, Freeman JV, Gersh BJ, Kowey PR, Mahaffey KW, Thomas L, Peterson ED, Fonarow GC. Use of Evidence-based Cardiac Prevention Therapy Among Outpatients with Atrial Fibrillation. The American Journal Of Medicine 2013, 126: 625-632.e1. PMID: 23787195, PMCID: PMC4037289, DOI: 10.1016/j.amjmed.2013.01.037.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAntihypertensive AgentsAtrial FibrillationCardiovascular DiseasesComorbidityDefibrillators, ImplantableEvidence-Based PracticeFemaleHumansHydroxymethylglutaryl-CoA Reductase InhibitorsLogistic ModelsMalePlatelet Aggregation InhibitorsPractice Guidelines as TopicRegistriesRisk FactorsConceptsCardiovascular comorbid conditionsEvidence-based therapiesAtrial fibrillationRisk factorsComorbid conditionsEvidence-based therapy useMore evidence-based therapiesGuideline-recommended therapiesAngiotensin receptor blockersAntiarrhythmic drug therapyCardiovascular risk factorsPeripheral vascular diseaseMinority of patientsCoronary artery diseaseMultivariable logistic regressionUS national registryAngiotensin-converting enzymeAldosterone antagonistsComorbid illnessesReceptor blockersComorbid diseasesAntiplatelet agentsArtery diseaseDiabetes mellitusHeart failure
2012
Effectiveness of Implantable Cardioverter Defibrillators and Cardiac Resynchronization Therapy in Heart Failure
Freeman JV, Masoudi FA. Effectiveness of Implantable Cardioverter Defibrillators and Cardiac Resynchronization Therapy in Heart Failure. Heart Failure Clinics 2012, 9: 59-77. PMID: 23168318, DOI: 10.1016/j.hfc.2012.09.006.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedCardiac Resynchronization TherapyComparative Effectiveness ResearchDefibrillators, ImplantableDisease ManagementFemaleHeart FailureHumansMaleMeta-Analysis as TopicMiddle AgedObservationOutcome and Process Assessment, Health CarePatient SelectionPractice Guidelines as TopicRandomized Controlled Trials as TopicSecondary PreventionSeverity of Illness IndexSex FactorsSurvival RateConceptsCardiac resynchronization therapyTrial dataResynchronization therapyQRS morphologyNYHA class IV patientsCardiac devicesBenefit of ICDSingle-chamber ICDClass IV patientsHigh-volume hospitalsOptimal medical managementEffective treatment modalityPrior ventricular arrhythmiasProlonged QRS complexRecent trial dataRecent trial resultsImplantable cardioverter defibrillatorQuality of lifeHF hospitalizationSymptomatic HFHF symptomsICD therapySevere comorbiditiesIV patientsMortality benefit
2011
Physician Procedure Volume and Complications of Cardioverter-Defibrillator Implantation
Freeman JV, Wang Y, Curtis JP, Heidenreich PA, Hlatky MA. Physician Procedure Volume and Complications of Cardioverter-Defibrillator Implantation. Circulation 2011, 125: 57-64. PMID: 22095828, DOI: 10.1161/circulationaha.111.046995.Peer-Reviewed Original ResearchMeSH KeywordsAgedClinical CompetenceDefibrillators, ImplantableFemaleHumansMaleMedicinePhysiciansPostoperative ComplicationsRegistriesTreatment OutcomeConceptsPhysician procedure volumeProcedure volumeHospital mortalityICD implantationHospital characteristicsPhysician specialtyNational Cardiovascular Data Registry ICD RegistryImplantable cardioverter-defibrillator placementInitial ICD implantationRate of complicationsCardioverter-defibrillator implantationHospital procedure volumeClustering of patientsAnnual procedure volumeOutcomes of proceduresVolume of proceduresHierarchical logistic regressionHospital complicationsComplication rateHospital volumePatient characteristicsProcedural complicationsHighest quartileInverse relationshipComplicationsIs Less More? Dual- Versus Single-Chamber Implantable Cardioverter-Defibrillators⁎⁎Editorials published in the Journal of the American College of Cardiology reflect the views of the authors and do not necessarily represent the views of JACC or the American College of Cardiology.
Al-Ahmad A, Freeman JV. Is Less More? Dual- Versus Single-Chamber Implantable Cardioverter-Defibrillators⁎⁎Editorials published in the Journal of the American College of Cardiology reflect the views of the authors and do not necessarily represent the views of JACC or the American College of Cardiology. Journal Of The American College Of Cardiology 2011, 58: 1014-1015. PMID: 21867835, DOI: 10.1016/j.jacc.2011.05.032.Peer-Reviewed Original Research
2010
The Relation Between Hospital Procedure Volume and Complications of Cardioverter-Defibrillator Implantation From the Implantable Cardioverter-Defibrillator Registry
Freeman JV, Wang Y, Curtis JP, Heidenreich PA, Hlatky MA. The Relation Between Hospital Procedure Volume and Complications of Cardioverter-Defibrillator Implantation From the Implantable Cardioverter-Defibrillator Registry. Journal Of The American College Of Cardiology 2010, 56: 1133-1139. PMID: 20863954, DOI: 10.1016/j.jacc.2010.07.007.Peer-Reviewed Original ResearchConceptsAdverse eventsProcedure volumeImplantable Cardioverter-Defibrillator RegistryHospital adverse outcomesInitial ICD implantationCardioverter-defibrillator implantationHigh-volume hospitalsLow-volume hospitalsPatients' clinical characteristicsBetter clinical outcomesHospital procedure volumeVolume-outcome relationshipNCDR ICD RegistryClinical characteristicsICD implantationICD RegistryProcedural complicationsClinical outcomesAdverse outcomesHospital characteristicsBiventricular ICDsImplant volumeHospitalRepresentative populationICD