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 ResearchConceptsEligible 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
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 ResearchConceptsNon-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 implantationNational Trends in the Burden of Atrial Fibrillation During Hospital Admissions for Heart Failure
Reinhardt SW, Chouairi F, Miller PE, Clark KAA, Kay B, Fuery M, Guha A, Freeman JV, Ahmad T, Desai NR, Friedman DJ. National Trends in the Burden of Atrial Fibrillation During Hospital Admissions for Heart Failure. Journal Of The American Heart Association 2021, 10: e019412. PMID: 34013736, PMCID: PMC8483517, DOI: 10.1161/jaha.120.019412.Peer-Reviewed Original ResearchConceptsReduced ejection fractionComorbid atrial fibrillationHeart failureAtrial fibrillationEjection fractionHospital mortalityHF hospitalizationBackground Heart failureConclusion Atrial fibrillationWhite individualsNational Inpatient SampleMedian hospital chargesMore comorbiditiesComorbid hypertensionHF admissionsHF outcomesPatient demographicsDiabetes mellitusHospital admissionHospital chargesInpatient SampleVascular diseaseHospitalizationPatientsMortality
2019
Guideline-directed therapies for comorbidities and clinical outcomes among individuals with atrial fibrillation
Loring Z, Shrader P, Allen LA, Blanco R, Chan PS, Ezekowitz MD, Fonarow GC, Freeman JV, Gersh BJ, Mahaffey KW, Naccarelli GV, Pieper K, Reiffel JA, Singer DE, Steinberg BA, Thomas LE, Peterson ED, Piccini JP. Guideline-directed therapies for comorbidities and clinical outcomes among individuals with atrial fibrillation. American Heart Journal 2019, 219: 21-30. PMID: 31710841, PMCID: PMC7285625, DOI: 10.1016/j.ahj.2019.10.008.Peer-Reviewed Original ResearchMeSH KeywordsAgedAtrial FibrillationCardiovascular DiseasesCause of DeathComorbidityCoronary Artery DiseaseDiabetes MellitusDisease ProgressionEmbolismFemaleGuideline AdherenceHeart FailureHumansHyperlipidemiasHypertensionIntracranial EmbolismMalePeripheral Nervous System DiseasesPeripheral Vascular DiseasesRegistriesSleep Apnea, ObstructiveTreatment OutcomeConceptsGuideline-directed therapyAtrial fibrillationCause mortalityHeart failureAF progressionLower riskNew-onset heart failureObstructive sleep apnea patientsCox proportional hazards modelBetter Informed TreatmentObstructive sleep apneaSleep apnea patientsProportional hazards modelAF patientsDiabetes mellitusNeurovascular eventsClinical outcomesOutcomes RegistrySleep apneaApnea patientsComorbiditiesHazards modelNonsignificant trendPatientsLower mortalityDigoxin Use and Associated Adverse Events Among Older Adults
Angraal S, Nuti SV, Masoudi FA, Freeman JV, Murugiah K, Shah ND, Desai NR, Ranasinghe I, Wang Y, Krumholz HM. Digoxin Use and Associated Adverse Events Among Older Adults. The American Journal Of Medicine 2019, 132: 1191-1198. PMID: 31077654, DOI: 10.1016/j.amjmed.2019.04.022.Peer-Reviewed Original ResearchConceptsRate of hospitalizationDigoxin useDigoxin toxicityNational Prescription AuditMedicare feeService beneficiariesDigoxin prescriptionAssociated adverse eventsAdverse eventsCohort studyAdverse outcomesSecondary diagnosisNational cohortPrescription auditPrescription trendsClinical guidelinesHospitalizationMortality rateClinical practiceOlder adultsSubsequent outcomesOutcomesToxicityPrescriptionNational-level trends
2018
Can advanced analytics fix modern medicine's problem of uncertainty, imprecision, and inaccuracy?
Ahmad T, Freeman JV, Asselbergs FW. Can advanced analytics fix modern medicine's problem of uncertainty, imprecision, and inaccuracy? European Journal Of Heart Failure 2018, 21: 86-89. PMID: 30537243, DOI: 10.1002/ejhf.1370.Peer-Reviewed Original Research
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 study
2015
Heart rate is associated with progression of atrial fibrillation, independent of rhythm
Holmqvist F, Kim S, Steinberg BA, Reiffel JA, Mahaffey KW, Gersh BJ, Fonarow GC, Naccarelli GV, Chang P, Freeman JV, Kowey PR, Thomas L, Peterson ED, Piccini JP. Heart rate is associated with progression of atrial fibrillation, independent of rhythm. Heart 2015, 101: 894. PMID: 25732748, PMCID: PMC4453487, DOI: 10.1136/heartjnl-2014-307043.Peer-Reviewed Original ResearchConceptsAtrial fibrillationAF progressionHeart rateBaseline ECGRhythm control strategyBetter Informed TreatmentPredictors of progressionPersistent atrial fibrillationModest discriminatory powerLower heart rateHigher heart rateMore comorbiditiesOutcomes RegistryPatientsClinical practiceInformed TreatmentProgressionStrongest predictorFibrillationPredictorsBaselineAgeECGSustained formsSignificant interaction
2013
Effectiveness of β-Blockers in Heart Failure With Left Ventricular Systolic Dysfunction and Chronic Kidney Disease
Chang TI, Yang J, Freeman JV, Hlatky MA, Go AS. Effectiveness of β-Blockers in Heart Failure With Left Ventricular Systolic Dysfunction and Chronic Kidney Disease. Journal Of Cardiac Failure 2013, 19: 176-182. PMID: 23482078, PMCID: PMC4126798, DOI: 10.1016/j.cardfail.2013.01.006.Peer-Reviewed Original ResearchConceptsChronic kidney diseaseVentricular systolic dysfunctionΒ-blocker therapyHeart failure hospitalizationIncident heart failureHeart failureKidney diseaseSystolic dysfunctionFailure hospitalizationΒ-blockersLower riskKaiser Permanente Northern California systemLeft ventricular systolic dysfunctionLower crude riskCombined end pointΒ-blocker useGlomerular filtration rateAssociation of treatmentMultivariable adjustmentCrude riskMedication effectivenessCox regressionPotential confoundersFiltration rateMethodologic limitations
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