2010
Prevalence and predictors of mechanical dyssynchrony as defined by phase analysis in patients with left ventricular dysfunction undergoing gated SPECT myocardial perfusion imaging
Samad Z, Atchley AE, Trimble MA, Sun JL, Shaw LK, Pagnanelli R, Chen J, Garcia EV, Iskandrian AE, Velazquez EJ, Borges-Neto S. Prevalence and predictors of mechanical dyssynchrony as defined by phase analysis in patients with left ventricular dysfunction undergoing gated SPECT myocardial perfusion imaging. Journal Of Nuclear Cardiology 2010, 18: 24-30. PMID: 21082299, PMCID: PMC3077282, DOI: 10.1007/s12350-010-9310-7.Peer-Reviewed Original ResearchMeSH KeywordsAgedAlgorithmsCardiac-Gated Single-Photon Emission Computer-Assisted TomographyFemaleHumansImage EnhancementImage Interpretation, Computer-AssistedIncidenceMaleMyocardial Perfusion ImagingNorth CarolinaPrevalenceReproducibility of ResultsRisk AssessmentRisk FactorsSensitivity and SpecificityVentricular Dysfunction, LeftConceptsLeft ventricular dysfunctionMechanical dyssynchronyVentricular dysfunctionIndependent predictorsBlack raceQRS durationPhase SDGated SPECT myocardial perfusionLeft ventricular ejection fractionTomography myocardial perfusion imagingStress scoresVentricular ejection fractionIschemic heart diseasePopulation of patientsMeasures of dyssynchronySPECT myocardial perfusionMyocardial perfusion imagingSingle photon emissionSignificant dyssynchronyEjection fractionEntire cohortUnivariate predictorsClinical variablesHeart diseaseMale genderMechanical Dyssynchrony After Myocardial Infarction in Patients With Left Ventricular Dysfunction, Heart Failure, or Both
Shin SH, Hung CL, Uno H, Hassanein AH, Verma A, Bourgoun M, Køber L, Ghali JK, Velazquez EJ, Califf RM, Pfeffer MA, Solomon SD. Mechanical Dyssynchrony After Myocardial Infarction in Patients With Left Ventricular Dysfunction, Heart Failure, or Both. Circulation 2010, 121: 1096-1103. PMID: 20176989, DOI: 10.1161/circulationaha.109.863795.Peer-Reviewed Original ResearchMeSH KeywordsAgedAnalog-Digital ConversionAngiotensin II Type 1 Receptor BlockersDeathDisease ProgressionFemaleFollow-Up StudiesHeart FailureHumansMaleMiddle AgedMotionMyocardial ContractionMyocardial InfarctionPrognosisProportional Hazards ModelsStress, MechanicalTetrazolesUltrasonographyValineValsartanVentricular Dysfunction, LeftVideo RecordingConceptsSD of timeLeft ventricular dysfunctionHeart failureMyocardial infarctionMechanical dyssynchronyVentricular dysfunctionIndependent predictorsPost-myocardial infarction prognosisPeak velocityAdverse cardiovascular outcomesMultivariate Cox modelRisk of deathLeft ventricular segmentsMeasures of dyssynchronyVelocity vector imagingCardiovascular outcomesEchocardiographic variablesVentricular synchronyVentricular dyssynchronyClinical outcomesEchocardiography studyRisk factorsContractile patternsVentricular segmentsCox model
2008
Evaluation of mechanical dyssynchrony and myocardial perfusion using phase analysis of gated SPECT imaging in patients with left ventricular dysfunction
Trimble MA, Borges-Neto S, Honeycutt EF, Shaw LK, Pagnanelli R, Chen J, Iskandrian AE, Garcia EV, Velazquez EJ. Evaluation of mechanical dyssynchrony and myocardial perfusion using phase analysis of gated SPECT imaging in patients with left ventricular dysfunction. Journal Of Nuclear Cardiology 2008, 15: 663-670. PMID: 18761269, PMCID: PMC3048059, DOI: 10.1016/j.nuclcard.2008.06.007.Peer-Reviewed Original ResearchConceptsLeft ventricular dysfunctionMechanical dyssynchronyQRS durationPhase SDHF patientsVentricular dysfunctionPerfusion abnormalitiesMyocardial perfusionGated SPECT myocardial perfusion imagingLV phase distributionPhase analysis indicesSPECT myocardial perfusion imagingHeart failure patientsCardiac resynchronization therapyMeasures of dyssynchronyMyocardial perfusion imagingSingle photon emissionLV dysfunctionFailure patientsResynchronization therapyEjection fractionElectrical dyssynchronyMyocardial functionDyssynchronyMyocardial thickening