2023
Detection of Left Ventricular Systolic Dysfunction From Electrocardiographic Images
Sangha V, Nargesi A, Dhingra L, Khunte A, Mortazavi B, Ribeiro A, Banina E, Adeola O, Garg N, Brandt C, Miller E, Ribeiro A, Velazquez E, Giatti L, Barreto S, Foppa M, Yuan N, Ouyang D, Krumholz H, Khera R. Detection of Left Ventricular Systolic Dysfunction From Electrocardiographic Images. Circulation 2023, 148: 765-777. PMID: 37489538, PMCID: PMC10982757, DOI: 10.1161/circulationaha.122.062646.Peer-Reviewed Original ResearchMeSH KeywordsAdultElectrocardiographyHumansLongitudinal StudiesProspective StudiesVentricular Dysfunction, LeftVentricular Function, LeftConceptsLV systolic dysfunctionYale-New Haven HospitalVentricular systolic dysfunctionSystolic dysfunctionLV ejection fractionBrazilian Longitudinal StudyNew Haven HospitalEjection fractionCardiology clinicRegional hospitalLeft ventricular systolic dysfunctionCedars-Sinai Medical CenterAdult Health (ELSA-Brasil) cohort
2021
Optimal medical therapy with or without surgical revascularization and long-term outcomes in ischemic cardiomyopathy
Farsky PS, White J, Al-Khalidi HR, Sueta CA, Rouleau J, Panza J, Velazquez E, O'Connor C, Investigators W, Dabrowski R, Djokovic L, Drazner M, Haddad H, Ali I, Keltai M, Naik A, Sopko G, Golba K, Andersson B, Carson P, Kukulski T. Optimal medical therapy with or without surgical revascularization and long-term outcomes in ischemic cardiomyopathy. Journal Of Thoracic And Cardiovascular Surgery 2021, 164: 1890-1899.e4. PMID: 33610365, PMCID: PMC8260609, DOI: 10.1016/j.jtcvs.2020.12.094.Peer-Reviewed Original ResearchMeSH KeywordsCardiomyopathiesCoronary Artery DiseaseHeart FailureHumansMyocardial IschemiaStroke VolumeTreatment OutcomeVentricular Dysfunction, LeftVentricular Function, LeftConceptsOptimal medical therapyCoronary artery bypassMedical therapyArtery bypassIschemic cardiomyopathyCause mortalityIschemic Heart Failure (STICH) trialVentricular ejection fraction 35Improved long-term survivalEjection fraction 35Angiotensin receptor blockersHeart Failure TrialLower cardiovascular mortalityMultivariable Cox modelOutcomes of patientsVentricular ejection fractionCoronary artery diseaseLong-term outcomesLong-term survivalSurgical revascularizationReceptor blockersCardiovascular mortalityAntiplatelet drugsArtery diseaseEjection fraction
2019
Diastolic Dysfunction in Patients With Human Immunodeficiency Virus Receiving Antiretroviral Therapy: Results From the CHART Study
Butler J, Greene SJ, Shah SH, Shah SJ, Anstrom KJ, Kim RJ, Kalogeropoulos AP, Velazquez EJ, Hernandez AF, Desvigne-Nickens P, Scherzer R, Hsue PY, Braunwald E. Diastolic Dysfunction in Patients With Human Immunodeficiency Virus Receiving Antiretroviral Therapy: Results From the CHART Study. Journal Of Cardiac Failure 2019, 26: 371-380. PMID: 31682908, PMCID: PMC7195219, DOI: 10.1016/j.cardfail.2019.10.011.Peer-Reviewed Original ResearchMeSH KeywordsCardiomyopathiesCase-Control StudiesCross-Sectional StudiesHeart AtriaHeart FailureHIVHIV InfectionsHumansQuality of LifeVentricular Dysfunction, LeftConceptsDiastolic dysfunctionBody mass indexAntiretroviral therapyN-terminal pro-B-type natriuretic peptide levelsPro-B-type natriuretic peptide levelsHuman immunodeficiency virus-infected individualsCross-sectional case-control studyLow-density lipoprotein levelsHigher body mass indexHigh-sensitivity troponin IHIV RNA copiesSignificant valvular diseaseNatriuretic peptide levelsHigher interleukin-6Normal ejection fractionVirus-infected individualsLeft atrial sizePersistent atrial fibrillationProgressive cardiac remodelingSymptom frequency scoreAntiretroviral Therapy studyCardiac magnetic resonanceCase-control studyCarboxyl-terminal telopeptideCD4 countPercutaneous coronary intervention outcomes in patients with stable coronary disease and left ventricular systolic dysfunction
DeVore AD, Yow E, Krucoff MW, Sherwood MW, Shaw LK, Chiswell K, O'Connor CM, Ohman EM, Velazquez EJ. Percutaneous coronary intervention outcomes in patients with stable coronary disease and left ventricular systolic dysfunction. ESC Heart Failure 2019, 6: 1233-1242. PMID: 31560171, PMCID: PMC6989282, DOI: 10.1002/ehf2.12510.Peer-Reviewed Original ResearchConceptsStable coronary artery diseasePercutaneous coronary interventionCoronary artery diseaseVentricular systolic dysfunctionSevere left ventricular systolic dysfunctionLeft ventricular systolic dysfunctionSystolic dysfunctionMedical therapyCardiovascular hospitalizationAddition of PCICanadian Cardiovascular Society class IIIImpact of PCIPercutaneous coronary intervention outcomesDuke University Medical CenterComposite of mortalityPropensity-matched cohortStable coronary diseaseAcute coronary syndromeHigh-risk patientsLong-term mortalityVentricular ejection fractionCox proportional hazardsUniversity Medical CenterCause mortalityCoronary syndromeDoes prior coronary angioplasty affect outcomes of surgical coronary revascularization? Insights from the STICH trial
Nicolau JC, Stevens SR, Al-Khalidi HR, Jatene FB, Furtado RHM, Dallan LAO, Lisboa LAF, Desvigne-Nickens P, Haddad H, Jolicoeur EM, Petrie MC, Doenst T, Michler RE, Ohman EM, Maddury J, Ali I, Deja MA, Rouleau JL, Velazquez EJ, Hill JA. Does prior coronary angioplasty affect outcomes of surgical coronary revascularization? Insights from the STICH trial. International Journal Of Cardiology 2019, 291: 36-41. PMID: 30929973, PMCID: PMC6579621, DOI: 10.1016/j.ijcard.2019.03.029.Peer-Reviewed Original ResearchConceptsPrior percutaneous coronary interventionPercutaneous coronary interventionLeft ventricular ejection fractionSTICH trialCV hospitalizationCV mortalityCause mortalityMedical treatmentSuperiority of CABGOutcomes of patientsSurgical coronary revascularizationCoronary artery bypassVentricular ejection fractionArtery bypassCoronary revascularizationCoronary interventionCoronary angioplastyEjection fractionMedian timeWorse prognosisRandomized treatmentCABGHospitalizationMortalityPatientsSpeckle Tracking Analysis of Left Ventricular Systolic Function Following Traumatic Brain Injury: A Pilot Prospective Observational Cohort Study
Krishnamoorthy V, Chaikittisilpa N, Lee J, Mackensen GB, Gibbons EF, Laskowitz D, Hernandez A, Velazquez E, Lele AV, Vavilala MS. Speckle Tracking Analysis of Left Ventricular Systolic Function Following Traumatic Brain Injury: A Pilot Prospective Observational Cohort Study. Journal Of Neurosurgical Anesthesiology 2019, 32: 156-161. PMID: 30676403, PMCID: PMC6646112, DOI: 10.1097/ana.0000000000000578.Peer-Reviewed Original ResearchMeSH KeywordsAdultBrain Injuries, TraumaticCohort StudiesEchocardiographyFemaleHeart VentriclesHumansMalePilot ProjectsProspective StudiesVentricular Dysfunction, LeftConceptsLeft ventricular ejection fractionGlobal longitudinal strainTraumatic brain injuryAge/sex-matched controlsSex-matched controlsModerate-severe traumatic brain injurySystolic dysfunctionCohort studyBrain injuryMean global longitudinal strainProspective observational cohort studyObservational cohort studyProspective cohort studySubclinical myocardial dysfunctionVentricular ejection fractionSpeckle trackingSpeckle tracking analysisFirst dayMid-ventricular segmentsModerate-severe TBI patientsSystolic functionTransthoracic echocardiographyEjection fractionMyocardial dysfunctionTBI patients
2018
Society of Thoracic Surgeons Risk Score and EuroSCORE-2 Appropriately Assess 30-Day Postoperative Mortality in the STICH Trial and a Contemporary Cohort of Patients With Left Ventricular Dysfunction Undergoing Surgical Revascularization
Bouabdallaoui N, Stevens SR, Doenst T, Petrie MC, Al-Attar N, Ali IS, Ambrosy AP, Barton AK, Cartier R, Cherniavsky A, Demondion P, Desvigne-Nickens P, Favaloro RR, Gradinac S, Heinisch P, Jain A, Jasinski M, Jouan J, Kalil RAK, Menicanti L, Michler RE, Rao V, Smith PK, Zembala M, Velazquez EJ, Al-Khalidi HR, Rouleau JL, Investigators F. Society of Thoracic Surgeons Risk Score and EuroSCORE-2 Appropriately Assess 30-Day Postoperative Mortality in the STICH Trial and a Contemporary Cohort of Patients With Left Ventricular Dysfunction Undergoing Surgical Revascularization. Circulation Heart Failure 2018, 11: e005531. PMID: 30571194, PMCID: PMC6309904, DOI: 10.1161/circheartfailure.118.005531.Peer-Reviewed Original ResearchConceptsPostoperative mortality riskCoronary artery bypassThoracic Surgeons risk scoreEuroScore 2Left ventricular dysfunctionContemporary cohortVentricular dysfunctionArtery bypassSTS scoreMortality riskRisk scoreSTICH patientsSTICH trialPostoperative mortalityUndergoing coronary artery bypassLeft ventricle ejection fractionVentricle ejection fractionGood c-statisticLow-risk scoresSurgical revascularizationSurvival benefitCardiac surgeryConsecutive patientsEjection fractionCC patientsVariability in Ejection Fraction Measured By Echocardiography, Gated Single-Photon Emission Computed Tomography, and Cardiac Magnetic Resonance in Patients With Coronary Artery Disease and Left Ventricular Dysfunction
Pellikka PA, She L, Holly TA, Lin G, Varadarajan P, Pai RG, Bonow RO, Pohost GM, Panza JA, Berman DS, Prior DL, Asch FM, Borges-Neto S, Grayburn P, Al-Khalidi HR, Miszalski-Jamka K, Desvigne-Nickens P, Lee KL, Velazquez EJ, Oh JK. Variability in Ejection Fraction Measured By Echocardiography, Gated Single-Photon Emission Computed Tomography, and Cardiac Magnetic Resonance in Patients With Coronary Artery Disease and Left Ventricular Dysfunction. JAMA Network Open 2018, 1: e181456-e181456. PMID: 30646130, PMCID: PMC6324278, DOI: 10.1001/jamanetworkopen.2018.1456.Peer-Reviewed Original ResearchConceptsLeft ventricular ejection fractionCoronary artery diseaseCardiovascular magnetic resonanceVentricular ejection fractionArtery diseaseCore laboratorySingle photon emissionVentricular dysfunctionEjection fractionBland-Altman plotsLVEF measurementsAssociation of LVEFGated single-photon emissionIschemic heart failureLeft ventricular dysfunctionSubset of patientsOptimal treatment strategyImaging modalitiesMulticenter diagnostic studyCardiac magnetic resonanceInternational multicenter studyLVEF dataMost patientsHeart failureSurgical treatmentDeterminants of Left Ventricular Hypertrophy and Diastolic Dysfunction in an HIV Clinical Cohort
Okeke NL, Alenezi F, Bloomfield GS, Dunning A, Clement ME, Shah SH, Naggie S, Velazquez EJ. Determinants of Left Ventricular Hypertrophy and Diastolic Dysfunction in an HIV Clinical Cohort. Journal Of Cardiac Failure 2018, 24: 496-503. PMID: 29964194, PMCID: PMC6231907, DOI: 10.1016/j.cardfail.2018.06.003.Peer-Reviewed Original ResearchConceptsLeft ventricular hypertrophyDiastolic dysfunctionTransthoracic echocardiogramVentricular hypertrophyHuman immunodeficiency virus-infected personsDuke University Medical CenterDefinite diastolic dysfunctionHIV Clinical CohortStructural myocardial abnormalitiesVirus-infected personsHuman immunodeficiency virusCells/University Medical CenterCD4 nadirsCD4 countViral suppressionPrimary outcomeImmune suppressionImmunodeficiency virusMyocardial abnormalitiesClinical cohortMedical CenterHigh riskImmune functionInfected personsCABG or PCI for Diabetic Patients With Left Ventricular Dysfunction Closing in on the Truth? ∗
Velazquez EJ, Petrie MC. CABG or PCI for Diabetic Patients With Left Ventricular Dysfunction Closing in on the Truth? ∗. Journal Of The American College Of Cardiology 2018, 71: 828-831. PMID: 29471932, DOI: 10.1016/j.jacc.2018.01.014.Peer-Reviewed Original ResearchCoronary Artery BypassDiabetes MellitusHumansPercutaneous Coronary InterventionVentricular Dysfunction, Left
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 incidencePatientsEchocardiogramAssessment of cardiac allograft systolic function by global longitudinal strain: From donor to recipient
DeVore AD, Alenezi F, Krishnamoorthy A, Ersboll M, Samsky MD, Schulte PJ, Patel CB, Rogers JG, Milano CA, Velazquez EJ, Khouri MG. Assessment of cardiac allograft systolic function by global longitudinal strain: From donor to recipient. Clinical Transplantation 2017, 31: e12961. PMID: 28294407, DOI: 10.1111/ctr.12961.Peer-Reviewed Original ResearchConceptsLV global longitudinal strainLeft ventricular ejection fractionGlobal longitudinal strainMedian left ventricular ejection fractionSystolic functionLongitudinal strainLV systolic dysfunctionMyocardial systolic performancePost-transplant outcomesLV systolic functionVentricular ejection fractionDonor-recipient pairsMyocardial deformation analysisAllograft dysfunctionCardiac allograftsCause hospitalizationSystolic dysfunctionPretransplant levelsEjection fractionSystolic performanceCorresponding recipientsClinical implicationsRecipientsEchocardiogramFurther studiesRace 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 fractionMental stress-induced left ventricular dysfunction and adverse outcome in ischemic heart disease patients
Sun JL, Boyle SH, Samad Z, Babyak MA, Wilson JL, Kuhn C, Becker RC, Ortel TL, Williams RB, Rogers JG, O’Connor C, Velazquez EJ, Jiang W. Mental stress-induced left ventricular dysfunction and adverse outcome in ischemic heart disease patients. European Journal Of Preventive Cardiology 2017, 24: 591-599. PMID: 28067532, PMCID: PMC6093615, DOI: 10.1177/2047487316686435.Peer-Reviewed Original ResearchMeSH KeywordsAgedCitalopramDisease-Free SurvivalFemaleHumansMaleMental HealthMiddle AgedMultivariate AnalysisMyocardial IschemiaProportional Hazards ModelsRisk AssessmentRisk FactorsSelective Serotonin Reuptake InhibitorsStress, PsychologicalStroke VolumeTime FactorsTreatment OutcomeVentricular Dysfunction, LeftVentricular Function, LeftConceptsMental stress-induced myocardial ischemiaMajor adverse cardiovascular eventsAdverse cardiovascular eventsLeft ventricular ejection fraction changeVentricular ejection fraction changeStable ischemic heart diseaseIschemic heart disease patientsLeft ventricular ejection fractionStress-induced myocardial ischemiaEjection fraction changesVentricular ejection fractionIschemic heart diseaseCardiovascular eventsHeart disease patientsMyocardial ischemiaEjection fractionStudy endpointDisease patientsHeart diseaseMental Stress–Induced Myocardial IschemiaStress-induced left ventricular dysfunctionFuture adverse cardiovascular eventsLeft ventricular dysfunctionHeart failure statusAssociation of indicesRethinking Revascularization in Left Ventricular Systolic Dysfunction
DeVore AD, Velazquez EJ. Rethinking Revascularization in Left Ventricular Systolic Dysfunction. Circulation Heart Failure 2017, 10: e003770. PMID: 28087689, PMCID: PMC5516273, DOI: 10.1161/circheartfailure.116.003770.Peer-Reviewed Original Research
2016
Ten-Year Outcomes After Coronary Artery Bypass Grafting According to Age in Patients With Heart Failure and Left Ventricular Systolic Dysfunction
Petrie MC, Jhund PS, She L, Adlbrecht C, Doenst T, Panza JA, Hill JA, Lee KL, Rouleau JL, Prior DL, Ali IS, Maddury J, Golba KS, White HD, Carson P, Chrzanowski L, Romanov A, Miller AB, Velazquez EJ. Ten-Year Outcomes After Coronary Artery Bypass Grafting According to Age in Patients With Heart Failure and Left Ventricular Systolic Dysfunction. Circulation 2016, 134: 1314-1324. PMID: 27573034, PMCID: PMC5089908, DOI: 10.1161/circulationaha.116.024800.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedCoronary Artery BypassDisease-Free SurvivalFemaleFollow-Up StudiesHeart FailureHumansMaleMiddle AgedMyocardial IschemiaStroke VolumeSurvival RateVentricular Dysfunction, LeftConceptsCoronary artery bypassCause mortalityMedical therapyCardiovascular mortalityYounger patientsEjection fractionHeart failureCABG groupArtery bypassOlder patientsCardiovascular hospitalizationBenefit of CABGEfficacy of CABGCardiopulmonary bypass timeReduced ejection fractionVentricular systolic dysfunctionBaseline ejection fractionCoronary artery diseaseEffect of CABGTen-year outcomesConsistent beneficial effectsMore comorbiditiesSTICH trialBypass timeCardiovascular deathPredicting Outcomes Over Time in Patients With Heart Failure, Left Ventricular Systolic Dysfunction, or Both Following Acute Myocardial Infarction
Lopes RD, Pieper KS, Stevens SR, Solomon SD, McMurray JJ, Pfeffer MA, Leimberger JD, Velazquez EJ. Predicting Outcomes Over Time in Patients With Heart Failure, Left Ventricular Systolic Dysfunction, or Both Following Acute Myocardial Infarction. Journal Of The American Heart Association 2016, 5: e003045. PMID: 27353607, PMCID: PMC4937254, DOI: 10.1161/jaha.115.003045.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedEpidemiologic MethodsFemaleHeart FailureHospitalizationHumansMaleMiddle AgedMyocardial InfarctionPrognosisVentricular Dysfunction, LeftConceptsVentricular systolic dysfunctionHeart failureMyocardial infarctionIntegrated discrimination improvementSystolic dysfunctionCardiovascular deathMultivariable Cox proportional hazardsAcute Myocardial Infarction trialNet reclassification improvement indexNonfatal heart failureMyocardial Infarction trialNonfatal myocardial infarctionPredictors of mortalityPatient informationBaseline heart rateAcute myocardial infarctionCox proportional hazardsCreatinine clearanceHospital arrivalHospital dischargeIndex hospitalizationPatient characteristicsOverall mortalityIndex eventClinical eventsCoronary-Artery Bypass Surgery in Patients with Ischemic Cardiomyopathy
Velazquez EJ, Lee KL, Jones RH, Al-Khalidi HR, Hill JA, Panza JA, Michler RE, Bonow RO, Doenst T, Petrie MC, Oh JK, She L, Moore VL, Desvigne-Nickens P, Sopko G, Rouleau JL. Coronary-Artery Bypass Surgery in Patients with Ischemic Cardiomyopathy. New England Journal Of Medicine 2016, 374: 1511-1520. PMID: 27040723, PMCID: PMC4938005, DOI: 10.1056/nejmoa1602001.Peer-Reviewed Original ResearchConceptsMedical therapy groupCardiovascular causesCoronary artery diseaseMedical therapyCABG groupArtery diseaseIschemic cardiomyopathySevere left ventricular systolic dysfunctionGuideline-directed medical therapyLeft ventricular systolic dysfunctionMajor secondary outcomesCoronary artery bypassPrimary outcome eventVentricular systolic dysfunctionArtery bypass surgeryCohort of patientsRate of deathSystolic dysfunctionBypass surgeryMedian durationSecondary outcomesSurvival benefitEjection fractionHeart failurePrimary outcomeAortic valve surgery and survival in patients with moderate or severe aortic stenosis and left ventricular dysfunction
Samad Z, Vora AN, Dunning A, Schulte PJ, Shaw LK, Al-Enezi F, Ersboll M, McGarrah RW, Vavalle JP, Shah SH, Kisslo J, Glower D, Harrison JK, Velazquez EJ. Aortic valve surgery and survival in patients with moderate or severe aortic stenosis and left ventricular dysfunction. European Heart Journal 2016, 37: 2276-2286. PMID: 26787441, PMCID: PMC5841220, DOI: 10.1093/eurheartj/ehv701.Peer-Reviewed Original ResearchMeSH KeywordsAortic ValveAortic Valve StenosisCoronary Artery BypassHeart Valve Prosthesis ImplantationHumansTreatment OutcomeVentricular Dysfunction, LeftConceptsAortic valve surgerySevere aortic stenosisModerate aortic stenosisAortic stenosisValve surgeryMean gradientMultivariable Cox modelVentricular systolic dysfunctionCoronary artery bypassHigh-risk cohortCurrent practice patternsArtery bypassCause mortalityEchocardiographic databaseSystolic dysfunctionVentricular dysfunctionMultivariable adjustmentTranscatheter approachMedical therapyPractice patternsBetter survivalCABGCox modelPatientsLower mortality
2015
Importance of Angina in Patients With Coronary Disease, Heart Failure, and Left Ventricular Systolic Dysfunction Insights From STICH
Jolicœur EM, Dunning A, Castelvecchio S, Dabrowski R, Waclawiw MA, Petrie MC, Stewart R, Jhund PS, Desvigne-Nickens P, Panza JA, Bonow RO, Sun B, San TR, Al-Khalidi HR, Rouleau JL, Velazquez EJ, Cleland JGF. Importance of Angina in Patients With Coronary Disease, Heart Failure, and Left Ventricular Systolic Dysfunction Insights From STICH. Journal Of The American College Of Cardiology 2015, 66: 2092-2100. PMID: 26541919, PMCID: PMC4655599, DOI: 10.1016/j.jacc.2015.08.882.Peer-Reviewed Original ResearchConceptsCoronary artery diseaseLV systolic dysfunctionGreater survival benefitMedical therapySystolic dysfunctionCause mortalitySurvival benefitWorse prognosisCoronary artery bypass graft surgeryLeft ventricular systolic dysfunctionArtery bypass graft surgeryLong-term clinical outcomesGreater prognostic benefitBypass graft surgeryVentricular systolic dysfunctionEffect of CABGMultivariable CoxSTICH trialGraft surgeryPrognostic benefitArtery diseaseCoronary diseaseEjection fractionHeart failureClinical outcomes