2012
Left Ventricular Ejection Fraction and Left Ventricular End‐Diastolic Volume in Patients With Diastolic Dysfunction
Jovin IS, Ebisu K, Liu Y, Finta LA, Oprea AD, Brandt CA, Dziura J, Wackers FJ. Left Ventricular Ejection Fraction and Left Ventricular End‐Diastolic Volume in Patients With Diastolic Dysfunction. Congestive Heart Failure 2012, 19: 130-134. PMID: 23241105, DOI: 10.1111/chf.12013.Peer-Reviewed Original ResearchConceptsLVEF of patientsLeft ventricular ejection fractionLower peak filling ratePeak filling rateEnd-diastolic volumeNormal peak filling ratesEquilibrium radionuclide angiocardiographyVentricular ejection fractionDiastolic dysfunctionAsymptomatic patientsEjection fractionLow left ventricular ejection fractionNormal left ventricular ejection fractionVentricular end-diastolic volumeMild systolic dysfunctionNormal systolic functionEDV indexSystolic dysfunctionSystolic functionRadionuclide angiocardiographyPatientsDysfunctionRepeat scansFilling rateAngiocardiography
2008
Utility of Cardiac Biomarkers in Predicting Infarct Size, Left Ventricular Function, and Clinical Outcome After Primary Percutaneous Coronary Intervention for ST-Segment Elevation Myocardial Infarction
Chia S, Senatore F, Raffel O, Lee H, Wackers F, Jang I. Utility of Cardiac Biomarkers in Predicting Infarct Size, Left Ventricular Function, and Clinical Outcome After Primary Percutaneous Coronary Intervention for ST-Segment Elevation Myocardial Infarction. JACC Cardiovascular Interventions 2008, 1: 415-423. PMID: 19463339, DOI: 10.1016/j.jcin.2008.04.010.Peer-Reviewed Original ResearchMeSH KeywordsAgedAngioplasty, Balloon, CoronaryBenzenesulfonatesBiomarkersCardiovascular AgentsCoronary AngiographyCreatine Kinase, MB FormDisease-Free SurvivalFemaleHumansKaplan-Meier EstimateMaleMiddle AgedMyocardial InfarctionMyocardiumPiperazinesPredictive Value of TestsProportional Hazards ModelsProspective StudiesRisk AssessmentStroke VolumeTime FactorsTomography, Emission-Computed, Single-PhotonTreatment OutcomeTroponin ITroponin TUnited StatesVentricular Function, LeftConceptsST-segment elevation myocardial infarctionPrimary percutaneous coronary interventionPrimary PCIElevation myocardial infarctionPercutaneous coronary interventionInfarct sizeClinical outcomesMyocardial infarctionCardiac biomarkersCoronary interventionCreatine kinaseCK-MBLarge ST-segment elevation myocardial infarctionTroponin TIntracellular calcium modulatorsLarger infarct sizeVentricular ejection fractionCardiac biomarker levelsLeft ventricular functionComposite clinical eventsTime-concentration curveEVOLVE trialLower LVEFAdverse eventsEjection fraction
2006
Long-term assessment of cardiac function after dose-dense and -intense sequential doxorubicin (A), paclitaxel (T), and cyclophosphamide (C) as adjuvant therapy for high risk breast cancer
Abu-Khalaf MM, Juneja V, Chung GG, DiGiovanna MP, Sipples R, McGurk M, Zelterman D, Haffty B, Reiss M, Wackers FJ, Lee FA, Burtness BA. Long-term assessment of cardiac function after dose-dense and -intense sequential doxorubicin (A), paclitaxel (T), and cyclophosphamide (C) as adjuvant therapy for high risk breast cancer. Breast Cancer Research And Treatment 2006, 104: 341-349. PMID: 17051423, DOI: 10.1007/s10549-006-9413-7.Peer-Reviewed Original ResearchConceptsLeft ventricular ejection fractionEnd of chemotherapyEquilibrium radionuclide angiographyBreast cancerAdjuvant therapySequential doxorubicinCardiac functionIpsilateral axillary lymph nodesHigh-risk breast cancerRisk breast cancerClinical heart failureInitiation of chemotherapyAxillary lymph nodesVentricular ejection fractionEnd of therapyLong-term cardiotoxicityMedian absolute changeEligible patientsFilgrastim supportLate cardiotoxicityAxillary nodesAsymptomatic declineEjection fractionHeart failureLymph nodes
2005
Differential effects of filtering and attenuation correction on assessments of left ventricular volumes and ejection fraction from ECG-gated SPECT: Evaluation of four different software
Tsatkin V, Wackers F, Liu Y. Differential effects of filtering and attenuation correction on assessments of left ventricular volumes and ejection fraction from ECG-gated SPECT: Evaluation of four different software. Journal Of Nuclear Cardiology 2005, 12: s73. DOI: 10.1016/j.nuclcard.2004.12.179.Peer-Reviewed Original ResearchDifferential effects of filtering and attenuation correction on assessments of left ventricular volumes and ejection fraction from ECG-gated SPECT: Evaluation of four different software
Tsatkin V, Wackers F, Liu Y. Differential effects of filtering and attenuation correction on assessments of left ventricular volumes and ejection fraction from ECG-gated SPECT: Evaluation of four different software. Journal Of Nuclear Cardiology 2005, 12: s73. DOI: 10.1016/j.nuclcard.2004.12.227.Peer-Reviewed Original Research
2003
Comparison of 16-frame and 8-frame gated SPET imaging for determination of left ventricular volumes and ejection fraction
Navare SM, Wackers FJ, Liu YH. Comparison of 16-frame and 8-frame gated SPET imaging for determination of left ventricular volumes and ejection fraction. European Journal Of Nuclear Medicine And Molecular Imaging 2003, 30: 1330-1337. PMID: 12838373, DOI: 10.1007/s00259-003-1231-0.Peer-Reviewed Original ResearchConceptsSingle photon emission tomographyEnd-diastolic volumeEnd-systolic volumePerfusion defectsEjection fractionMyocardial perfusionSPET imagesLV volumesLeft ventricular end-diastolic volumeVentricular end-diastolic volumeSmaller end-systolic volumeLarger end-diastolic volumeSignificant perfusion defectsMyocardial perfusion defectsRadiotracer doseHigher LVEFVentricular functionLow doseVentricular volumeEmission tomographyLV parametersDoseLVEFECG gatingPatients
2001
Dobutamine-induced augmentation of left ventricular ejection fraction predicts survival of heart failure patients with severe non-ischaemic cardiomyopathy
Ramahi T, Longo M, Cadariu A, Rohlfs K, Slade M, Carolan S, Vallejo E, Wackers F. Dobutamine-induced augmentation of left ventricular ejection fraction predicts survival of heart failure patients with severe non-ischaemic cardiomyopathy. European Heart Journal 2001, 22: 849-856. PMID: 11350094, DOI: 10.1053/euhj.2001.2654.Peer-Reviewed Original ResearchConceptsLeft ventricular ejection fractionVentricular ejection fractionTransplant-free survivalEjection fractionHeart failureVentricular end-diastolic volume indexOverall transplant-free survivalPeak exercise oxygen consumptionSevere non-ischaemic cardiomyopathyEnd-diastolic volume indexFunctional classStrongest prognostic variableChronic heart failureHeart failure patientsPrognosis of patientsNon-ischemic cardiomyopathyExercise oxygen consumptionEquilibrium radionuclide ventriculographyVentriculographic variablesExercise capacityFailure patientsPrognostic valueRadionuclide ventriculographyIntravenous infusionDeltaLVEFLeft ventricular inotropic reserve and right ventricular function predict increase of left ventricular ejection fraction after beta-blocker therapy in nonischemic cardiomyopathy
Ramahi T, Longo M, Cadariu A, Rohlfs K, Carolan S, Engle K, Samady H, Wackers F. Left ventricular inotropic reserve and right ventricular function predict increase of left ventricular ejection fraction after beta-blocker therapy in nonischemic cardiomyopathy. Journal Of The American College Of Cardiology 2001, 37: 818-824. PMID: 11693757, DOI: 10.1016/s0735-1097(00)01162-1.Peer-Reviewed Original ResearchConceptsLeft ventricular ejection fractionRight ventricular ejection fractionBeta-blocker therapyVentricular ejection fractionVentricular inotropic reserveNonischemic cardiomyopathyEjection fractionInotropic reserveDobutamine infusionLong-term beta-blocker therapyNormal right ventricular ejection fractionImprovement of LVEFBeta-blocker doseRight ventricular functionSystolic blood pressureIntravenous dobutamine infusionEquilibrium radionuclide ventriculographyVentriculographic variablesLVEF increaseBlood pressureVentricular functionRadionuclide ventriculographyUnderwent assessmentIntravenous infusionBaseline variables
2000
Effect of left ventricular volume on results of coronary artery bypass grafting
Kim R, Ugurlu B, Tereb D, Wackers F, Tellides G, Elefteriades J. Effect of left ventricular volume on results of coronary artery bypass grafting. The American Journal Of Cardiology 2000, 86: 1261-1264. PMID: 11090805, DOI: 10.1016/s0002-9149(00)01216-9.Peer-Reviewed Original ResearchConceptsCoronary artery bypassArtery bypassSignificant left ventricular dilationLeft ventricular dilationLV chamber sizeLV ejection fractionMedium-term survivalSurgical revascularizationAngina symptomsEjection fractionIschemic cardiomyopathyLV dilationVentricular dilationVentricular sizeVentricular volumePatientsSignificant reductionBypassChamber sizeDilationRevascularizationCardiomyopathySymptomsAssessment of left ventricular ejection fraction with quantitative gated SPECT: Accuracy and correlation with first-pass radionuclide angiography
Vallejo E, Dione D, Sinusas A, Wackers F. Assessment of left ventricular ejection fraction with quantitative gated SPECT: Accuracy and correlation with first-pass radionuclide angiography. Journal Of Nuclear Cardiology 2000, 7: 461-470. PMID: 11083195, DOI: 10.1067/mnc.2000.107820.Peer-Reviewed Original ResearchConceptsVentricular ejection fractionEjection fractionPatient studiesLeft ventricular ejection fractionExtracardiac activityFirst-pass radionuclide angiographyLarger end-diastolic volumeStress-induced ischemiaEnd-diastolic volumeQuantitative gated SPECTSingle photon emissionAbnormal LVEFNormal LVEFRadionuclide angiographyDiastolic volumeLVEFPerfusion defectsLVEF valuesSame patientHeart sizeLeft ventricleGated SPECTSPECT studiesQGSMean restReproducibility and accuracy of gated SPECT for determination of left ventricular volumes and ejection fraction: experimental validation using MRI.
Vallejo E, Dione DP, Bruni WL, Constable RT, Borek PP, Soares JP, Carr JG, Condos SG, Wackers FJ, Sinusas AJ. Reproducibility and accuracy of gated SPECT for determination of left ventricular volumes and ejection fraction: experimental validation using MRI. Journal Of Nuclear Medicine 2000, 41: 874-82; discussion 883-6. PMID: 10809204.Peer-Reviewed Original Research
1999
Ejection fraction by radionuclide ventriculography and contrast left ventriculogram A tale of two techniques
Ureña P, Lamas G, Mitchell G, Flaker G, Smith S, Wackers F, McEwan P, Pfeffer M, investigators F. Ejection fraction by radionuclide ventriculography and contrast left ventriculogram A tale of two techniques. Journal Of The American College Of Cardiology 1999, 33: 180-185. PMID: 9935027, DOI: 10.1016/s0735-1097(98)00533-6.Peer-Reviewed Original ResearchConceptsRadionuclide ventriculographyEjection fractionCardiovascular eventsEvent ratesMyocardial infarctionPostinfarct patientsIndependent predictorsRisk stratificationAssess prognosisClinical eventsVentricular performanceClinical impressionPatientsMultivariate analysisPrognosisVentriculographyTercileEF measurementsBest predictorPredictorsComparative abilityCatheterizationInfarctionVentriculograms
1997
Effect of left ventricular function on the assessment of myocardial viability by technectium-99m sestamibi and correlation with positron emission tomography in patients with healed myocardial infarcts or stable angina pectoris, or both
Arrighi J, Ng C, Dey H, Wackers F, Soufer R. Effect of left ventricular function on the assessment of myocardial viability by technectium-99m sestamibi and correlation with positron emission tomography in patients with healed myocardial infarcts or stable angina pectoris, or both. The American Journal Of Cardiology 1997, 80: 1007-1013. PMID: 9352969, DOI: 10.1016/s0002-9149(97)00594-8.Peer-Reviewed Original ResearchConceptsCoronary artery diseasePositron emission tomographyLV dysfunctionArtery diseaseGroup 2Myocardial viabilityGroup 1Ejection fractionModerate coronary artery diseaseEmission tomographyModerate LV dysfunctionSevere LV dysfunctionStable angina pectorisLV ejection fractionGlobal LV dysfunctionAccuracy of technetiumSingle photon emissionSemiquantitative SPECTVentricular dysfunctionViability detectionAngina pectorisVentricular functionReduced perfusionSestamibi SPECTMyocardial infarct
1996
Distortion of the Terminal Portion of the QRS on the Admission Electrocardiogram in Acute Myocardial Infarction and Correlation With Infarct Size and Long-Term Prognosis (Thrombolysis In Myocardial Infarction 4 Trial)**This study was supported in part by a grant from SmithKline Beecham, Philadelphia, Pennsylvania.
Birnbaum Y, Kloner R, Sclarovsky S, Cannon C, McCabe C, Davis V, Zaret B, Wackers F, Braunwald E. Distortion of the Terminal Portion of the QRS on the Admission Electrocardiogram in Acute Myocardial Infarction and Correlation With Infarct Size and Long-Term Prognosis (Thrombolysis In Myocardial Infarction 4 Trial)**This study was supported in part by a grant from SmithKline Beecham, Philadelphia, Pennsylvania. The American Journal Of Cardiology 1996, 78: 396-403. PMID: 8752182, DOI: 10.1016/s0002-9149(96)00326-8.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsAgedAngina PectorisCardiac Output, LowCoronary AngiographyCreatine KinaseDouble-Blind MethodElectrocardiographyFemaleFollow-Up StudiesHumansMaleMiddle AgedMyocardial InfarctionPatient AdmissionPrognosisRecurrenceRetrospective StudiesStroke VolumeSurvival RateTechnetium Tc 99m SestamibiThrombolytic TherapyTreatment OutcomeVentricular Function, LeftConceptsAcute myocardial infarctionLong-term prognosisAnterior acute myocardial infarctionCreatine kinase releaseInfarct sizeMyocardial infarctionMyocardial infarction (TIMI) 4 trialAnterior AMI patientsOne-year mortalityCoronary angiographic findingsLarger infarct sizeVentricular ejection fractionAdmission electrocardiogramHospital mortalityPrevious anginaSestamibi defectsAngiographic findingsBaseline characteristicsEjection fractionHeart failureAMI patientsClinical outcomesQRS distortionPatientsEnd pointComparison and reproducibility of visual echocardiographic and quantitative radionyclide left ventricular ejection fractions
van Royen N, Jaffe C, Krumholz H, Johnson K, Lynch P, Natale D, Atkinson P, Demon P, Wackers F. Comparison and reproducibility of visual echocardiographic and quantitative radionyclide left ventricular ejection fractions. The American Journal Of Cardiology 1996, 77: 843-850. PMID: 8623737, DOI: 10.1016/s0002-9149(97)89179-5.Peer-Reviewed Original ResearchConceptsEquilibrium radionuclide angiographyVentricular ejection fractionEjection fractionRadionuclide angiographyEchocardiographic LVEFEquilibrium radionuclideRadionuclide LVEFClinical relevanceLeft ventricular ejection fractionCorrelation of LVEFDetermination of LVEFPatient management decisionsPotential clinical relevanceRelevant differencesInter-observer reproducibilityStable patientsLV functionLimits of agreementLVEFIndividual patientsRepeat assessmentEchocardiographyAngiographyBlinded analysisRepeat analysis
1995
Value of radionuclide rest and exercise left ventricular ejection fraction in assessing survival of patients after thrombolytic therapy for acute myocardial infarction: Results of thrombolysis in myocardial infarction (TIMI) phase II study
Zaret B, Wackers F, Terrin M, Forman S, Williams D, Knatterud G, Braunwald E, Group F. Value of radionuclide rest and exercise left ventricular ejection fraction in assessing survival of patients after thrombolytic therapy for acute myocardial infarction: Results of thrombolysis in myocardial infarction (TIMI) phase II study. Journal Of The American College Of Cardiology 1995, 26: 73-79. PMID: 7797778, DOI: 10.1016/0735-1097(95)00146-q.Peer-Reviewed Original ResearchConceptsLeft ventricular ejection fractionVentricular ejection fractionExercise left ventricular ejection fractionPeak exercise ejection fractionExercise ejection fractionEjection fractionAcute myocardial infarctionImportant prognostic indexThrombolytic therapyPrethrombolytic eraCardiac mortalityPrognostic indexPrognostic valueMyocardial infarctionMortality rateMyocardial Infarction Phase II (TIMI II) studyMyocardial Infarction trialRest ejection fractionSubmaximal supine exercisePhase II studySurvival of patientsResults of thrombolysisHigh mortality rateCause mortalityII study
1993
Frequency and significance of right ventricular dysfunction during inferior wall left ventricular myocardial infarction treated with thrombolytic therapy (results from the Thrombolysis in Myocardial Infarction [TIMI] II trial)
Berger P, Ruocco N, Ryan T, Jacobs A, Zaret B, Wackers F, Frederick M, Faxon D, Group R. Frequency and significance of right ventricular dysfunction during inferior wall left ventricular myocardial infarction treated with thrombolytic therapy (results from the Thrombolysis in Myocardial Infarction [TIMI] II trial). The American Journal Of Cardiology 1993, 71: 1148-1152. PMID: 8097614, DOI: 10.1016/0002-9149(93)90637-r.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic beta-AntagonistsAngioplasty, Balloon, CoronaryCombined Modality TherapyConstriction, PathologicCoronary VesselsFemaleHeart DiseasesHeart VentriclesHumansMaleMiddle AgedMyocardial InfarctionRadionuclide VentriculographyThrombolytic TherapyTissue Plasminogen ActivatorVentricular Function, LeftVentricular Function, RightConceptsRV wall motion abnormalitiesRight ventricular dysfunctionRV dysfunctionVentricular myocardial infarctionWall motion abnormalitiesVentricular dysfunctionThrombolytic therapyRadionuclide ventriculographyMyocardial infarctionMotion abnormalitiesInferior wallLower mean left ventricular ejection fractionMean left ventricular ejection fractionLeft ventricular ejection fractionBaseline clinical characteristicsInfarct-related arteryMyocardial Infarction (TIMI) II trialVentricular ejection fractionEquilibrium radionuclide ventriculographyHospital complicationsMultivessel diseaseII trialClinical characteristicsHospital dischargeEjection fraction
1992
Tc-99m SestaMIBI: Will it replace Tl-201 in clinical cardiology?
Wackers F. Tc-99m SestaMIBI: Will it replace Tl-201 in clinical cardiology? Developments In Cardiovascular Medicine 1992, 128: 239-248. DOI: 10.1007/978-94-011-2666-3_16.Peer-Reviewed Original ResearchCoronary artery diseaseArtery diseaseEjection fractionPharmacological vasodilatationPhysical exerciseTl-201Regional wall motion studiesFirst-pass ejection fractionVentricular ejection fractionSize of infarctionAcute myocardial infarctionMyocardial perfusion imagingRegional wall motionMyocardial blood flowWall motion studiesThousands of patientsLower extraction fractionMyocardial salvageThrombolytic therapyVentricular functionCoronary occlusionMyocardial infarctionMyocardial ischemiaSestamibi imagingMyocardial viabilityAssessment of global and regional left ventricular performance at rest and during exercise after thrombolytic therapy for acute myocardial infarction: Results of the Thrombolysis in Myocardial Infarction (TIMI) II study
Zaret B, Wackers F, Terrin M, Ross R, Weiss M, Slater J, Morrison J, Bourge R, Passamani E, Knatterud G, Braunwald E, Investigators. Assessment of global and regional left ventricular performance at rest and during exercise after thrombolytic therapy for acute myocardial infarction: Results of the Thrombolysis in Myocardial Infarction (TIMI) II study. The American Journal Of Cardiology 1992, 69: 1-9. PMID: 1729855, DOI: 10.1016/0002-9149(92)90667-n.Peer-Reviewed Original ResearchConceptsLV ejection fractionLeft ventricular performanceEjection fractionRegional left ventricular performanceRegional ejection fractionHospital dischargeThrombolytic therapyVentricular performanceTreatment strategiesStrategies patientsComparable work loadNormal exercise responseRegional LV performanceMyocardial Infarction (TIMI) II trialAcute myocardial infarctionHospital-discharged patientsConservative strategyII studyII trialDischarge patientsConservative patientsClinical benefitLV performanceExercise studiesMyocardial infarctionTechnetium-99m sestamibi myocardial imaging at rest for assessment of myocardial infarction and first-pass ejection fraction
Boucher C, Wackers F, Zaret B, Mena I. Technetium-99m sestamibi myocardial imaging at rest for assessment of myocardial infarction and first-pass ejection fraction. The American Journal Of Cardiology 1992, 69: 22-27. PMID: 1530901, DOI: 10.1016/0002-9149(92)90670-t.Peer-Reviewed Original ResearchConceptsWall motion abnormalitiesFirst-pass ejection fractionEjection fractionQ-wave infarctsMotion abnormalitiesQ wavesAbnormal TcMyocardial infarctionSestamibi studiesFirst-pass imagingAbility of technetiumVentricular ejection fractionOccurrence of infarctionSestamibi myocardial perfusionPerfusion abnormalitiesWall motionRegional perfusionPosterior infarctsMyocardial perfusionMyocardial segmentsPatientsInfarctionSestamibi imagesProtocol IInfarcts