2023
Identifying treatment heterogeneity in atrial fibrillation using a novel causal machine learning method
Ngufor C, Yao X, Inselman J, Ross J, Dhruva S, Graham D, Lee J, Siontis K, Desai N, Polley E, Shah N, Noseworthy P, MN; New Haven C. Identifying treatment heterogeneity in atrial fibrillation using a novel causal machine learning method. American Heart Journal 2023, 260: 124-140. PMID: 36893934, PMCID: PMC10615250, DOI: 10.1016/j.ahj.2023.02.015.Peer-Reviewed Original ResearchConceptsOral anticoagulantsAtrial fibrillationPatient subgroupsComposite outcomeIschemic strokeEffect of OACsLifelong oral anticoagulationNonvitamin K antagonistNew oral anticoagulantsNonvalvular atrial fibrillationPrimary composite outcomeGlomerular filtration rateFuture prospective studiesOptumLabs Data WarehousePopulation-level effectivenessOAC useOral anticoagulationVASc scoreCause mortalityK antagonistsPrimary endpointWarfarin usersRenal functionAF patientsEntire cohortRates and predictors of hospital and emergency department care after catheter ablation of atrial fibrillation
Friedman D, Freeman J, Wong C, Febre J, Iglesias M, Khanna R, Piccini J. Rates and predictors of hospital and emergency department care after catheter ablation of atrial fibrillation. Journal Of Cardiovascular Electrophysiology 2023, 34: 823-830. PMID: 36738152, PMCID: PMC12367331, DOI: 10.1111/jce.15841.Peer-Reviewed Original ResearchConceptsPredictors of hospitalED careAF ablationED visitsPatient comorbiditiesSupraventricular tachycardiaUnscheduled careFemale sexCommon reasonDirect oral anticoagulationEmergency department evaluationNoncardiac chest painDays of dischargeRisk of rehospitalizationAtrial fibrillation ablationEmergency department careSame-day discharge programQuality improvement initiativesOptum Clinformatics databaseAdmission careMean CHAOral anticoagulationPostablation periodVASc scoreChest pain
2022
Benefits and harms of oral anticoagulants for atrial fibrillation in nursing home residents with advanced dementia
Ouellet GM, O'Leary JR, Leggett CG, Skinner J, Tinetti ME, Cohen AB. Benefits and harms of oral anticoagulants for atrial fibrillation in nursing home residents with advanced dementia. Journal Of The American Geriatrics Society 2022, 71: 561-568. PMID: 36310367, PMCID: PMC9957933, DOI: 10.1111/jgs.18108.Peer-Reviewed Original ResearchConceptsNursing home residentsAtrial fibrillationAdvanced dementiaHome residentsStroke riskLong-stay nursing home residentsMedicare Part D claimsDementia-related mortalityGuideline-recommended thresholdHarms of anticoagulationRetrospective cohort studyMultivariable survival analysisValvular heart diseaseRisk of deathPart D claimsMonths of lifeMinimum Data SetAnticoagulant discontinuationAnticoagulated individualsMean CHAVASc scoreCause mortalityMultivariable adjustmentOral anticoagulantsCohort studyResidual stroke risk despite oral anticoagulation in patients with atrial fibrillation
Carlisle M, Shrader P, Fudim M, Pieper K, Blanco R, Fonarow G, Naccarelli G, Gersh B, Reiffel J, Kowey P, Steinberg B, Freeman J, Ezekowitz M, Singer D, Allen L, Chan P, Pokorney S, Peterson E, Piccini J, Patients and Investigators O. Residual stroke risk despite oral anticoagulation in patients with atrial fibrillation. Heart Rhythm O2 2022, 3: 621-628. PMID: 36589908, PMCID: PMC9795305, DOI: 10.1016/j.hroo.2022.09.018.Peer-Reviewed Original ResearchTransient ischemic attackPermanent atrial fibrillationOral anticoagulationAtrial fibrillationVASc scoreIschemic attackThromboembolic eventsFemale sexPrevious stroke/transient ischemic attackStroke/transient ischemic attackTransient ischemic attack eventsCox proportional hazard modelingResidual riskResidual stroke riskBetter Informed TreatmentRisk of thromboembolismProportional hazard modelingSystemic embolismPrevious strokeStroke riskOutcomes RegistryMean ageRisk markersOutcome eventsThromboembolismLeft Atrial Appendage Occlusion Versus Oral Anticoagulation in Atrial Fibrillation : A Decision Analysis.
Chew DS, Zhou K, Pokorney SD, Matchar DB, Vemulapalli S, Allen LA, Jackson KP, Samad Z, Patel MR, Freeman JV, Piccini JP. Left Atrial Appendage Occlusion Versus Oral Anticoagulation in Atrial Fibrillation : A Decision Analysis. Annals Of Internal Medicine 2022, 175: 1230-1239. PMID: 35969865, DOI: 10.7326/m21-4653.Peer-Reviewed Original ResearchConceptsDirect oral anticoagulantsHigh bleeding riskLower stroke riskClinical effectiveness dataAtrial fibrillationBleeding riskStroke riskOral anticoagulantsIschemic strokeEffectiveness dataHAS-BLED scoreIndividual riskHigh stroke riskMajor bleeding riskNonvalvular atrial fibrillationPatient's individual riskPrimary end pointAtrial appendage occlusionBase-case analysisOral anticoagulationPrior strokeVASc scoreStroke preventionWatchman deviceAppendage occlusionIndications for Left Atrial Appendage Occlusion in the United States and Associated In-Hospital Outcomes: Results From the NCDR LAAO Registry
Daimee UA, Wang Y, Masoudi FA, Varosy PD, Friedman DJ, Du C, Koutras C, Reddy VY, Saw J, Price MJ, Kusumoto FM, Curtis JP, Freeman JV. Indications for Left Atrial Appendage Occlusion in the United States and Associated In-Hospital Outcomes: Results From the NCDR LAAO Registry. Circulation Cardiovascular Quality And Outcomes 2022, 15: e008418. PMID: 35959677, PMCID: PMC9388561, DOI: 10.1161/circoutcomes.121.008418.Peer-Reviewed Original ResearchConceptsHospital adverse eventsHigh fall riskNational Cardiovascular Data RegistryProcedural indicationsAtrial appendage occlusionAdverse eventsWatchman implantationFall riskMajor bleedsThromboembolic riskAppendage occlusionData registryAbnormal renal/liver functionLeft atrial appendage occlusionIn-Hospital OutcomesMean patient ageTransient ischemic attackMajority of patientsInternational normalized ratioIschemic attackMean CHAOral anticoagulationPrior strokeVASc scoreWATCHMAN procedurePeriprocedural Pericardial Effusion Complicating Transcatheter Left Atrial Appendage Occlusion: A Report From the NCDR LAAO Registry
Price MJ, Valderrábano M, Zimmerman S, Friedman DJ, Kar S, Curtis JP, Masoudi FA, Freeman JV. Periprocedural Pericardial Effusion Complicating Transcatheter Left Atrial Appendage Occlusion: A Report From the NCDR LAAO Registry. Circulation Cardiovascular Interventions 2022, 15: e011718. PMID: 35369701, PMCID: PMC9132377, DOI: 10.1161/circinterventions.121.011718.Peer-Reviewed Original ResearchConceptsAtrial appendage occlusionComposite of deathPericardial effusionAppendage occlusionSystemic embolismOdds ratioEarly postdischarge mortalityDual antiplatelet therapyLow serum albuminMean patient ageAdverse event ratesParoxysmal atrial fibrillationRisk of deathRisk-benefit ratioHospital strokeMean CHAPostdischarge mortalityVASc scoreWATCHMAN procedureAntiplatelet therapyIndex hospitalizationAdverse eventsPatient agePrimary outcomeVentricular functionClinical Outcomes at 1 Year Following Transcatheter Left Atrial Appendage Occlusion in the United States
Price MJ, Slotwiner D, Du C, Freeman JV, Turi Z, Rammohan C, Kusumoto FM, Kavinsky C, Akar J, Varosy PD, Koutras C, Curtis JP, Masoudi FA. Clinical Outcomes at 1 Year Following Transcatheter Left Atrial Appendage Occlusion in the United States. JACC Cardiovascular Interventions 2022, 15: 741-750. PMID: 35393108, PMCID: PMC9116488, DOI: 10.1016/j.jcin.2022.02.009.Peer-Reviewed Original ResearchConceptsAtrial appendage occlusionIschemic strokeMajor bleedingClinical outcomesSystemic embolismAppendage occlusionMean HAS-BLED scoreHAS-BLED scoreKey secondary endpointKaplan-Meier methodCumulative event rateRate of mortalityMean CHAPrior strokeRelevant bleedingVASc scoreWATCHMAN procedurePrimary endpointSecondary endpointsThromboembolic eventsIntracranial bleedingBlood transfusionHemoglobin levelsHemorrhagic strokeKaplan-MeierAssociation between oral anticoagulants and COVID-19 related outcomes: a population-based cohort study
Wong AY, Tomlinson L, Brown JP, Elson W, Walker AJ, Schultze A, Morton CE, Evans D, Inglesby P, MacKenna B, Bhaskaran K, Rentsch CT, Powell E, Williamson E, Croker R, Bacon S, Hulme W, Bates C, Curtis HJ, Mehrkar A, Cockburn J, McDonald HI, Mathur R, Wing K, Forbes H, Eggo RM, Evans SJ, Smeeth L, Goldacre B, Douglas IJ, . Association between oral anticoagulants and COVID-19 related outcomes: a population-based cohort study. British Journal Of General Practice 2022, 72: bjgp.2021.0689. PMID: 35440465, PMCID: PMC9037187, DOI: 10.3399/bjgp.2021.0689.Peer-Reviewed Original ResearchConceptsCOVID-19 outcomesPopulation-based cohort studySevere COVID-19 outcomesSARS-CoV-2Oral anticoagulantsLower riskVASc scoreCohort studyHazard ratioAtrial fibrillationCOVID-19 related outcomesCOVID-19-related deathsPrescribed oral anticoagulantsPrimary care dataBaseline stroke riskOAC useCurrent useStroke riskHospital admissionThrombotic eventsCox regressionOAC usersReduced infection riskGeneral practiceDeath records
2021
Posterior left pericardiotomy for the prevention of atrial fibrillation after cardiac surgery: an adaptive, single-centre, single-blind, randomised, controlled trial
Gaudino M, Sanna T, Ballman KV, Robinson NB, Hameed I, Audisio K, Rahouma M, Di Franco A, Soletti GJ, Lau C, Rong LQ, Massetti M, Gillinov M, Ad N, Voisine P, DiMaio JM, Chikwe J, Fremes SE, Crea F, Puskas JD, Girardi L, Investigators P. Posterior left pericardiotomy for the prevention of atrial fibrillation after cardiac surgery: an adaptive, single-centre, single-blind, randomised, controlled trial. The Lancet 2021, 398: 2075-2083. PMID: 34788640, DOI: 10.1016/s0140-6736(21)02490-9.Peer-Reviewed Original ResearchConceptsPericardiotomy groupAtrial fibrillationCardiac surgeryIntervention groupVASc scoreHospital stayHospital dischargePericardial effusionCoronary arteryAortic valvePostoperative major adverse eventsPostoperative atrial fibrillationMajor adverse eventsLeft pleural cavityPostoperative pericardial effusionNew York Presbyterian HospitalEligible patientsITT populationMedian CHATreat populationWeill Cornell MedicinePostoperative complicationsAdult patientsAdverse eventsCommon complicationA Novel Risk Stratification System for Ischemic Stroke in Japanese Patients With Non-Valvular Atrial Fibrillation
Okumura K, Tomita H, Nakai M, Kodani E, Akao M, Suzuki S, Hayashi K, Sawano M, Goya M, Yamashita T, Fukuda K, Ogawa H, Tsuda T, Isobe M, Toyoda K, Miyamoto Y, Miyata H, Okamura T, Sasahara Y, Group F. A Novel Risk Stratification System for Ischemic Stroke in Japanese Patients With Non-Valvular Atrial Fibrillation. Circulation Journal 2021, 85: 1254-1262. PMID: 33762526, DOI: 10.1253/circj.cj-20-1075.Peer-Reviewed Original ResearchConceptsJapanese NVAF patientsIndependent risk factorIschemic strokeNVAF patientsRisk factorsAF RegistryHazard ratioC-statisticJapanese non-valvular atrial fibrillation (NVAF) patientsNon-valvular atrial fibrillation patientsCox hazard proportional analysisNovel risk stratification systemNon-valvular atrial fibrillationLower body mass indexFushimi AF RegistryIschemic stroke eventsJ-RHYTHM RegistryAtrial fibrillation patientsOral anticoagulant treatmentBody mass indexSignificant risk factorsRisk stratification systemType of AFVASc scoreAnticoagulant treatment
2020
Risk of Ischemic Stroke in Patients With Atrial Fibrillation After Extracranial Hemorrhage
Zhou E, Lord A, Boehme A, Henninger N, de Havenon A, Vahidy F, Ishida K, Torres J, Mistry EA, Mac Grory B, Sheth KN, Gurol ME, Furie K, Elkind MSV, Yaghi S. Risk of Ischemic Stroke in Patients With Atrial Fibrillation After Extracranial Hemorrhage. Stroke 2020, 51: 3592-3599. PMID: 33028172, PMCID: PMC7751804, DOI: 10.1161/strokeaha.120.029959.Peer-Reviewed Original ResearchConceptsExtracranial hemorrhageIschemic strokeAtrial fibrillationAnticoagulation therapyGenitourinary cancersSubgroup analysisCalifornia State Inpatient DatabaseFuture ischemic strokePrimary admission diagnosisAcute ischemic strokeAtrial appendage closureHistory of strokeCox regression modelState Inpatient DatabasesSeverity/typeVASc scoreAdmission diagnosisHemorrhagic complicationsSubsequent hospitalizationAppendage closureHazard ratioHospital admissionInpatient DatabasePertinent demographicPrevious diagnosisThe NCDR Left Atrial Appendage Occlusion Registry
Freeman JV, Varosy P, Price MJ, Slotwiner D, Kusumoto FM, Rammohan C, Kavinsky CJ, Turi ZG, Akar J, Koutras C, Curtis JP, Masoudi FA. The NCDR Left Atrial Appendage Occlusion Registry. Journal Of The American College Of Cardiology 2020, 75: 1503-1518. PMID: 32238316, PMCID: PMC7205034, DOI: 10.1016/j.jacc.2019.12.040.Peer-Reviewed Original ResearchConceptsHospital adverse event ratesAdverse event ratesEvent ratesMean HAS-BLED scoreHAS-BLED scoreHospital adverse eventsMean patient ageAtrial appendage occlusionMedian annual numberMajor bleedingMean CHAMore comorbiditiesVASc scoreWATCHMAN procedureAdverse eventsCommon complicationPatient agePericardial effusionPivotal trialsAppendage occlusionRandomized trialsAtrial fibrillationPatient populationPresent patientPhysician characteristics
2019
CHA2DS2-VASc Score and In-Hospital Mortality in Critically Ill Patients With New-Onset Atrial Fibrillation
Karamchandani K, Schoaps RS, Abendroth T, Carr ZJ, King TS, Bonavia A. CHA2DS2-VASc Score and In-Hospital Mortality in Critically Ill Patients With New-Onset Atrial Fibrillation. Journal Of Cardiothoracic And Vascular Anesthesia 2019, 34: 1165-1171. PMID: 31899140, DOI: 10.1053/j.jvca.2019.11.044.Peer-Reviewed Original ResearchConceptsNew-onset atrial fibrillationIntensive care unitTertiary care academic institutionHospital mortalityVASc scoreAtrial fibrillationIll patientsAdult patientsVascular diseasePrognostic markerTertiary care academic medical centerAssociation of CHAConcomitant vascular diseaseHospital mortality rateIn-Hospital MortalitySingle-center studyReliable prognostic markersAcademic medical centerElectronic medical recordsCHA2DS2-VAScHospital deathCare unitMedical recordsRetrospective analysisMedical Center
2018
Cardioembolic Stroke Risk and Recovery After Anticoagulation-Related Intracerebral Hemorrhage
Murphy MP, Kuramatsu JB, Leasure A, Falcone GJ, Kamel H, Sansing LH, Kourkoulis C, Schwab K, Elm JJ, Gurol ME, Tran H, Greenberg SM, Viswanathan A, Anderson CD, Schwab S, Rosand J, Shi FD, Kittner SJ, Testai FD, Woo D, Langefeld CD, James ML, Koch S, Huttner HB, Biffi A, Sheth KN. Cardioembolic Stroke Risk and Recovery After Anticoagulation-Related Intracerebral Hemorrhage. Stroke 2018, 49: 2652-2658. PMID: 30355194, PMCID: PMC6211810, DOI: 10.1161/strokeaha.118.021799.Peer-Reviewed Original ResearchConceptsCardioembolic stroke riskOral anticoagulation therapyRankin Scale scoreIntracerebral hemorrhageFunctional recoveryStroke riskAnticoagulation resumptionVASc scoreRecurrent strokeAnticoagulation therapyScale scoreAnticoagulation-related intracerebral hemorrhageDecreased likelihoodSurvivors of ICHModified Rankin Scale scoreNonvalvular atrial fibrillationRecurrent intracerebral hemorrhageOral anticoagulation treatmentICH survivorsTherapy resumptionAnticoagulation treatmentCardioembolic strokeIschemic strokeAtrial fibrillationIndex eventStroke Risk and Treatment in Patients with Atrial Fibrillation and Low CHA2DS2‐VASc Scores: Findings From the ORBIT‐AF I and II Registries
Jackson L, Kim S, Fonarow GC, Freeman JV, Gersh BJ, Go AS, Hylek EM, Kowey PR, Mahaffey KW, Singer D, Thomas L, Blanco R, Peterson ED, Piccini J, Patients and Investigators T. Stroke Risk and Treatment in Patients with Atrial Fibrillation and Low CHA2DS2‐VASc Scores: Findings From the ORBIT‐AF I and II Registries. Journal Of The American Heart Association 2018, 7: e008764. PMID: 30369317, PMCID: PMC6201408, DOI: 10.1161/jaha.118.008764.Peer-Reviewed Original ResearchConceptsOral anticoagulationAtrial fibrillationTreatment strategiesCardiology/American Heart Association guidelinesStroke/transient ischemic attackLow CHA2DS2-VASc scoreAmerican Heart Association guidelinesCHA2DS2-VASc scoreThromboembolic event rateTransient ischemic attackHeart Association guidelinesCurrent American CollegePatterns of treatmentIschemic attackVASc scoreCause mortalityStroke riskTreatment patternsAbsolute riskAssociation guidelinesStroke rateVAScAmerican CollegeLower riskPatients
2017
Treatment of Atrial Fibrillation and Concordance With the American Heart Association/American College of Cardiology/Heart Rhythm Society Guidelines
Barnett AS, Kim S, Fonarow GC, Thomas LE, Reiffel JA, Allen LA, Freeman JV, Naccarelli G, Mahaffey KW, Go AS, Kowey PR, Ansell JE, Gersh BJ, Hylek EM, Peterson ED, Piccini JP. Treatment of Atrial Fibrillation and Concordance With the American Heart Association/American College of Cardiology/Heart Rhythm Society Guidelines. Circulation Arrhythmia And Electrophysiology 2017, 10 PMID: 29141842, DOI: 10.1161/circep.117.005051.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAmerican Heart AssociationAtrial FibrillationCardiologistsFemaleGuideline AdherenceHealthcare DisparitiesHumansMaleMiddle AgedPractice Guidelines as TopicPractice Patterns, Physicians'Process Assessment, Health CareQuality Indicators, Health CareRegistriesRetrospective StudiesTime FactorsTreatment OutcomeUnited StatesConceptsAmerican Heart Association/American CollegeAtrial fibrillationGuideline recommendationsAmerican CollegeCardiology/Heart Rhythm Society GuidelinesHeart Rhythm Society guidelinesAtrial fibrillation guidelinesGuideline-concordant careThird of patientsRisk-adjusted outcomesAntiarrhythmic medicationsGuideline concordanceMajor bleedingMedian CHAOutpatient registryVASc scoreAntithrombotic therapyCause hospitalizationMedian ageClinical outcomesSociety guidelinesORBIT-AFImproved outcomesPatient levelSimilar riskIncidence and Predictors of Left Atrial Appendage Thrombus in Patients Treated With Nonvitamin K Oral Anticoagulants Versus Warfarin Before Catheter Ablation for Atrial Fibrillation
Wyrembak J, Campbell KB, Steinberg BA, Bahnson TD, Daubert JP, Velazquez EJ, Samad Z, Atwater BD. Incidence and Predictors of Left Atrial Appendage Thrombus in Patients Treated With Nonvitamin K Oral Anticoagulants Versus Warfarin Before Catheter Ablation for Atrial Fibrillation. The American Journal Of Cardiology 2017, 119: 1017-1022. PMID: 28153350, DOI: 10.1016/j.amjcard.2016.12.008.Peer-Reviewed Original ResearchConceptsRoutine transesophageal echocardiographyAtrial appendage thrombusLAA thrombusTransesophageal echocardiographyVASc scoreAppendage thrombusNonvitamin K oral anticoagulantsLeft atrial appendage thrombusSingle-center retrospective studyLower LAA velocityTEE-related complicationsOral anticoagulant therapyAtrial fibrillation ablationLAA velocityNOAC therapyOral anticoagulantsAF ablationAnticoagulant therapyCatheter ablationFibrillation ablationAtrial fibrillationRetrospective studyTEE procedureLower incidenceNOACs
2016
Absence of Oral Anticoagulation and Subsequent Outcomes Among Outpatients with Atrial Fibrillation
Hess PL, Kim S, Fonarow GC, Thomas L, Singer DE, Freeman JV, Gersh BJ, Ansell J, Kowey PR, Mahaffey KW, Chan PS, Steinberg BA, Peterson ED, Piccini JP, Patients and Investigators O. Absence of Oral Anticoagulation and Subsequent Outcomes Among Outpatients with Atrial Fibrillation. The American Journal Of Medicine 2016, 130: 449-456. PMID: 27888051, DOI: 10.1016/j.amjmed.2016.11.001.Peer-Reviewed Original ResearchConceptsOral anticoagulationAtrial fibrillationUntreated patientsSubsequent outcomesHigh riskAtrial fibrillation typeTransient ischemic attackAtrial fibrillation burdenBetter Informed TreatmentAtrial fibrillation patientsLow bleeding riskAmbulatory care sitesIschemic attackVASc scoreBleeding riskGuideline indicationsFibrillation patientsOutcomes RegistryCox regressionAdverse outcomesTreatment gapCare sitesNonsignificant trendPatientsCurrent community practice
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