QRS Duration, Bundle-Branch Block Morphology, and Outcomes Among Older Patients With Heart Failure Receiving Cardiac Resynchronization Therapy
Peterson PN, Greiner MA, Qualls LG, Al-Khatib SM, Curtis JP, Fonarow GC, Hammill SC, Heidenreich PA, Hammill BG, Piccini JP, Hernandez AF, Curtis LH, Masoudi FA. QRS Duration, Bundle-Branch Block Morphology, and Outcomes Among Older Patients With Heart Failure Receiving Cardiac Resynchronization Therapy. JAMA 2013, 310: 617-626. PMID: 23942680, DOI: 10.1001/jama.2013.8641.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overBundle-Branch BlockCardiac Resynchronization TherapyCardiac Resynchronization Therapy DevicesCardiovascular DiseasesCohort StudiesElectrocardiographyFee-for-Service PlansFemaleHeart FailureHumansMaleMedicarePatient ReadmissionRetrospective StudiesRiskTreatment OutcomeUnited StatesConceptsLeft bundle branch blockCRT-D implantationCardiac resynchronization therapyHeart failure readmissionQRS durationCause mortalityICD RegistryResynchronization therapyUnadjusted ratesMedicare beneficiariesNational Cardiovascular Data Registry ICD RegistryClinical practiceBundle branch block morphologyCause readmission rateRetrospective cohort studyLonger QRS durationBundle branch blockService Medicare beneficiariesCause readmissionCohort studyCRT-defibrillatorOlder patientsReadmission ratesHeart failureClinical trials