2018
Impaired Recovery of Left Ventricular Function in Patients With Cardiomyopathy and Left Bundle Branch Block
Sze E, Samad Z, Dunning A, Campbell KB, Loring Z, Atwater BD, Chiswell K, Kisslo JA, Velazquez EJ, Daubert JP. Impaired Recovery of Left Ventricular Function in Patients With Cardiomyopathy and Left Bundle Branch Block. Journal Of The American College Of Cardiology 2018, 71: 306-317. PMID: 29348023, PMCID: PMC8352572, DOI: 10.1016/j.jacc.2017.11.020.Peer-Reviewed Original ResearchConceptsGuideline-directed medical therapyLeft bundle branch blockCardiac resynchronization therapyWide QRS durationBundle branch blockQRS durationLVEF improvementQRS morphologyReduced LVEFBranch blockLeft ventricular ejection fraction improvementVentricular ejection fraction improvementEjection fraction improvementMean LVEF improvementNarrow QRS durationSevere valve diseaseFirst-line therapyHeart failure hospitalizationLeft ventricular functionVentricular assist deviceBaseline electrocardiographyFailure hospitalizationCombined endpointSignificant comorbiditiesResynchronization therapy
2017
Comparison of Incidence of Left Ventricular Systolic Dysfunction Among Patients With Left Bundle Branch Block Versus Those With Normal QRS Duration
Sze E, Dunning A, Loring Z, Atwater BD, Chiswell K, Daubert JP, Kisslo JA, Mark DB, Velazquez EJ, Samad Z. Comparison of Incidence of Left Ventricular Systolic Dysfunction Among Patients With Left Bundle Branch Block Versus Those With Normal QRS Duration. The American Journal Of Cardiology 2017, 120: 1990-1997. PMID: 28958452, DOI: 10.1016/j.amjcard.2017.08.003.Peer-Reviewed Original ResearchConceptsLeft ventricular systolic dysfunctionLeft bundle branch blockVentricular systolic dysfunctionBundle branch blockEjection fractionBaseline echocardiogramSystolic dysfunctionBranch blockQRS durationRisk factorsRelative riskLeft ventricular assist deviceNarrow QRS durationCohort of patientsNormal QRS durationFinal study cohortCommon risk factorsComparison of incidenceVentricular assist deviceHeart transplantStudy cohortLBBB patientsHigh incidencePatientsEchocardiogramRace and Sex Differences in QRS Interval and Associated Outcome Among Patients with Left Ventricular Systolic Dysfunction
Randolph TC, Broderick S, Shaw LK, Chiswell K, Mentz RJ, Kutyifa V, Velazquez EJ, Gilliam FR, Thomas KL. Race and Sex Differences in QRS Interval and Associated Outcome Among Patients with Left Ventricular Systolic Dysfunction. Journal Of The American Heart Association 2017, 6: e004381. PMID: 28320746, PMCID: PMC5523998, DOI: 10.1161/jaha.116.004381.Peer-Reviewed Original ResearchConceptsQRS durationBundle branch blockWhite patientsHeart failureBlack patientsBranch blockNon-left bundle branch block morphologyLeft ventricular systolic dysfunctionMultivariable Cox regression modelsBundle branch block morphologyLeft bundle branch blockMedian QRS durationVentricular systolic dysfunctionHeart failure patientsVentricular ejection fractionShorter QRS durationCox regression modelRisk of mortalityDuke University HospitalBlack individualsSex differencesCause mortalitySystolic dysfunctionCoronary angiographyEjection fraction
2015
Influence of QRS infarct score and QRS duration prior to transcatheter aortic valve replacement on follow-up left ventricular end systolic volume in patients with new persistent left bundle branch block
Hannink LG, Wagner GS, Kisslo J, Alenezi FA, Shaw LK, Hofmann P, Zusterzeel R, Phelan M, Velazquez EJ, Gorgels AP. Influence of QRS infarct score and QRS duration prior to transcatheter aortic valve replacement on follow-up left ventricular end systolic volume in patients with new persistent left bundle branch block. Journal Of Electrocardiology 2015, 48: 637-642. PMID: 25959263, DOI: 10.1016/j.jelectrocard.2015.04.010.Peer-Reviewed Original ResearchMeSH KeywordsAged, 80 and overAortic Valve StenosisBundle-Branch BlockDiagnosis, Computer-AssistedEchocardiographyElectrocardiographyFemaleFollow-Up StudiesHumansMalePrognosisReproducibility of ResultsRetrospective StudiesRisk AssessmentSensitivity and SpecificityStroke VolumeTranscatheter Aortic Valve ReplacementTreatment OutcomeConceptsLeft bundle branch blockTranscatheter aortic valve replacementPersistent left bundle branch blockVentricular end-systolic volumeAortic valve replacementBundle branch blockEnd-systolic volumeQRS durationInfarct scoreValve replacementVentricular functionBranch blockNew-onset left bundle branch blockLeft ventricular end-systolic volumeNew left bundle branch blockLeft ventricular functionLarger study populationStrict inclusion criteriaSuch predictive valueQRS scoreSystolic volumeInclusion criteriaStudy populationCardiac conditionsPredictive value
2014
Impact of Cardiovascular Events on Change in Quality of Life and Utilities in Patients After Myocardial Infarction A VALIANT Study (Valsartan In Acute Myocardial Infarction)
Lewis EF, Li Y, Pfeffer MA, Solomon SD, Weinfurt KP, Velazquez EJ, Califf RM, Rouleau JL, Kober L, White HD, Schulman KA, Reed SD. Impact of Cardiovascular Events on Change in Quality of Life and Utilities in Patients After Myocardial Infarction A VALIANT Study (Valsartan In Acute Myocardial Infarction). JACC Heart Failure 2014, 2: 159-165. PMID: 24720924, DOI: 10.1016/j.jchf.2013.12.003.Peer-Reviewed Original ResearchMeSH KeywordsAcute DiseaseAgedAngiotensin II Type 1 Receptor BlockersAngiotensin-Converting Enzyme InhibitorsBundle-Branch BlockCaptoprilDeath, Sudden, CardiacDrug Therapy, CombinationFemaleHealth StatusHeart FailureHospitalizationHumansMaleMyocardial InfarctionQuality of LifeRecurrenceStrokeSurvivorsTetrazolesTreatment OutcomeValineValsartanConceptsNonfatal CV eventsEQ-5D assessmentCV eventsVisual analog scaleEQ-5D scoresCardiovascular eventsMyocardial infarctionEQ-5DBaseline EQ-5D scoresKillip class IINonfatal cardiovascular eventsHealth-related qualityLinear mixed-effects regression modelsQuality of lifeMixed effects regression modelsVALIANT studyWorse HRQLVAS scoresEjection fractionNonfatal eventsMI survivorsAnalog scaleVALIANT trialGeneric instrumentsPatients
2006
Long-term outcomes of left bundle branch block in high-risk survivors of acute myocardial infarction: The VALIANT experience
Stephenson K, Skali H, McMurray JJ, Velazquez EJ, Aylward PG, Kober L, Van de Werf F, White HD, Pieper KS, Califf RM, Solomon SD, Pfeffer MA. Long-term outcomes of left bundle branch block in high-risk survivors of acute myocardial infarction: The VALIANT experience. Heart Rhythm 2006, 4: 308-313. PMID: 17341394, DOI: 10.1016/j.hrthm.2006.11.021.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAngiotensin II Type 1 Receptor BlockersAngiotensin-Converting Enzyme InhibitorsBundle-Branch BlockCaptoprilElectrocardiographyFemaleFollow-Up StudiesHeart FailureHumansMaleMiddle AgedMultivariate AnalysisMyocardial InfarctionPredictive Value of TestsProportional Hazards ModelsResearch DesignRisk FactorsStroke VolumeSurvival AnalysisSurvivorsTetrazolesTime FactorsTreatment OutcomeValineValsartanVentricular Dysfunction, LeftConceptsNew left bundle branch blockLeft bundle branch blockLV systolic dysfunctionHigh-risk survivorsHeart failureMyocardial infarctionBundle branch blockSystolic dysfunctionCardiovascular outcomesIndependent predictorsBranch blockLeft ventricular systolic dysfunctionLong-term cardiovascular complicationsMajor adverse cardiovascular outcomesAcute Myocardial Infarction trialBaseline ECG dataMajor cardiovascular outcomesPost-MI survivorsComposite of deathMyocardial Infarction trialVentricular systolic dysfunctionAdverse cardiovascular outcomesHigh-risk patientsLV ejection fractionLong-term outcomes