2012
Mechanical dyssynchrony evaluated by tissue Doppler cross-correlation analysis is associated with long-term survival in patients after cardiac resynchronization therapy
Risum N, Williams ES, Khouri MG, Jackson KP, Olsen NT, Jons C, Storm KS, Velazquez EJ, Kisslo J, Bruun NE, Sogaard P. Mechanical dyssynchrony evaluated by tissue Doppler cross-correlation analysis is associated with long-term survival in patients after cardiac resynchronization therapy. European Heart Journal 2012, 34: 48-56. PMID: 22390911, DOI: 10.1093/eurheartj/ehs035.Peer-Reviewed Original ResearchMeSH KeywordsAgedArrhythmias, CardiacCardiac Resynchronization TherapyCardiac Resynchronization Therapy DevicesCross-Sectional StudiesDefibrillators, ImplantableFeasibility StudiesFemaleHumansMaleMiddle AgedRetrospective StudiesStroke VolumeTreatment OutcomeUltrasonography, Doppler, ColorVentricular Dysfunction, LeftConceptsCardiac resynchronization therapyLong-term survivalMechanical dyssynchronyYu indexResynchronization therapyCox proportional hazards regressionLeft bundle branch blockProportional hazards regressionTissue Doppler imagingBundle branch blockPre-implant assessmentActivation delayVentricular assist deviceCardiac transplantationCause mortalityCRT candidatesImproved survivalHazards regressionPoor prognosisSubgroup analysisBranch blockWall delayPoor survivalDyssynchronyDoppler imaging
2008
Left Ventricular Mechanical Dyssynchrony as Assessed by Phase Analysis of ECG‐Gated SPECT Myocardial Perfusion Imaging
Chen J, Garcia EV, Lerakis S, Henneman MM, Bax JJ, Trimble MA, Borges‐Neto S, Velazquez EJ, Iskandrian AE. Left Ventricular Mechanical Dyssynchrony as Assessed by Phase Analysis of ECG‐Gated SPECT Myocardial Perfusion Imaging. Echocardiography 2008, 25: 1186-1194. PMID: 18986406, DOI: 10.1111/j.1540-8175.2008.00782.x.Peer-Reviewed Original ResearchConceptsCardiac resynchronization therapyMyocardial perfusion imagingTissue Doppler imagingLV dyssynchronyPerfusion imagingTomography myocardial perfusion imagingSPECT myocardial perfusion imagingElectrocardiography-gated single-photon emissionSevere heart failureVentricular mechanical dyssynchronySingle photon emissionHeart failureMechanical dyssynchronyResynchronization therapyClinical evaluationDyssynchronyLeft ventricleDoppler imagingPatientsRegional wallMechanical contractionPhoton emissionCardiac cycleImportant predictorFourier harmonic functionsMeasuring left ventricular mechanical dyssynchrony from ECG-gated SPECT myocardial perfusion imaging.
Chen J, Garcia EV, Henneman MM, Bax JJ, Boogers MJ, Trimble MA, Borges-Neto S, Velazquez EJ, Iskandrian AE. Measuring left ventricular mechanical dyssynchrony from ECG-gated SPECT myocardial perfusion imaging. Minerva Cardioangiologica 2008, 56: 227-35. PMID: 18319701.Peer-Reviewed Original ResearchConceptsCardiac resynchronization therapyTissue Doppler imagingMyocardial perfusion imagingLV dyssynchronyECG-gated SPECT myocardial perfusion imagingPerfusion imagingCardiac resynchronization therapy (CRT) trialsMyocardial strain-rate imagingTomography myocardial perfusion imagingClinical validationAvailable echocardiographic techniquesSPECT myocardial perfusion imagingSevere heart failureVentricular mechanical dyssynchronyPredictors of responseRoutine clinical practiceStrain rate imagingSingle photon emissionEntire left ventricleHeart failureMechanical dyssynchronyResynchronization therapyEchocardiographic techniquesDyssynchronyClinical practice