2024
A Multimodal Video-Based AI Biomarker for Aortic Stenosis Development and Progression
Oikonomou E, Holste G, Yuan N, Coppi A, McNamara R, Haynes N, Vora A, Velazquez E, Li F, Menon V, Kapadia S, Gill T, Nadkarni G, Krumholz H, Wang Z, Ouyang D, Khera R. A Multimodal Video-Based AI Biomarker for Aortic Stenosis Development and Progression. JAMA Cardiology 2024, 9: 534-544. PMID: 38581644, PMCID: PMC10999005, DOI: 10.1001/jamacardio.2024.0595.Peer-Reviewed Original ResearchCardiac magnetic resonanceAortic valve replacementCardiac magnetic resonance imagingAV VmaxSevere ASAortic stenosisCohort studyPeak aortic valve velocityCohort study of patientsAortic valve velocityCohort of patientsTraditional cardiovascular risk factorsAssociated with faster progressionStudy of patientsCedars-Sinai Medical CenterAssociated with AS developmentCardiovascular risk factorsCardiovascular imaging modalitiesIndependent of ageModerate ASEjection fractionEchocardiographic studiesValve replacementRisk stratificationCardiac structure
2018
Clinical and Echocardiographic Predictors of Outcomes in Patients With Pulmonary Hypertension
Siddiqui I, Rajagopal S, Brucker A, Chiswell K, Christopher B, Alenezi F, Mandawat A, Rivera D, Arges K, Tapson V, Kisslo J, Velazquez E, Douglas PS, Samad Z. Clinical and Echocardiographic Predictors of Outcomes in Patients With Pulmonary Hypertension. The American Journal Of Cardiology 2018, 122: 872-878. PMID: 30093068, PMCID: PMC6280670, DOI: 10.1016/j.amjcard.2018.05.019.Peer-Reviewed Original ResearchConceptsPrecapillary pulmonary hypertensionRV global longitudinal strainPulmonary hypertensionEchocardiographic parametersHard outcomesPulmonary arterial hypertension medicationsClass III symptomsREVEAL risk scoreRight heart functionCohort of patientsCumulative incidence rateCurrent clinical guidelinesGlobal longitudinal strainEchocardiographic predictorsHypertension medicationsNT-proBNPTransthoracic echocardiographyWalk distanceUnivariable analysisMean ageClinical guidelinesIncidence rateMultivariable modelSurrogate outcomesRisk score
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 incidencePatientsEchocardiogram
2016
Coronary-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 outcome
2014
Comprehensive Assessment of Right Ventricular Function in Patients with Pulmonary Hypertension with Global Longitudinal Peak Systolic Strain Derived from Multiple Right Ventricular Views
Rajagopal S, Forsha DE, Risum N, Hornik CP, Poms AD, Fortin TA, Tapson VF, Velazquez EJ, Kisslo J, Samad Z. Comprehensive Assessment of Right Ventricular Function in Patients with Pulmonary Hypertension with Global Longitudinal Peak Systolic Strain Derived from Multiple Right Ventricular Views. Journal Of The American Society Of Echocardiography 2014, 27: 657-665.e3. PMID: 24656881, DOI: 10.1016/j.echo.2014.02.001.Peer-Reviewed Original ResearchConceptsRV longitudinal peak systolic strainLongitudinal peak systolic strainPulmonary hypertensionRight ventricular functionRV functionPeak systolic strainFour-chamber viewRight ventricleRV dysfunctionClinical characteristicsWalk distanceVentricular functionSystolic strainGlobal longitudinal peak systolic strainTricuspid annular plane systolic excursionAssessment of PHMean pulmonary artery pressurePulmonary capillary wedge pressureRV myocardial performance indexAnnular plane systolic excursionRegional RV dysfunctionCapillary wedge pressurePulmonary artery pressureCohort of patientsMyocardial performance index
2009
Use of phase analysis of gated SPECT perfusion imaging to quantify dyssynchrony in patients with mild-to-moderate left ventricular dysfunction
Atchley AE, Trimble MA, Samad Z, Shaw LK, Pagnanelli R, Chen J, Garcia EV, Iskandrian AE, Velazquez EJ, Borges-Neto S. Use of phase analysis of gated SPECT perfusion imaging to quantify dyssynchrony in patients with mild-to-moderate left ventricular dysfunction. Journal Of Nuclear Cardiology 2009, 16: 888-894. PMID: 19690935, PMCID: PMC3048054, DOI: 10.1007/s12350-009-9136-3.Peer-Reviewed Original ResearchConceptsModerate LV dysfunctionSevere LV dysfunctionLV dysfunctionMechanical dyssynchronyQRS durationNormal controlsGated SPECTModerate left ventricular dysfunctionNYHA class IIIPrevalence of dyssynchronyLeft ventricular dysfunctionCohort of patientsMajority of patientsLV mechanical dyssynchronyGated SPECT imagingCurrent selection criteriaLess dyssynchronyLVEF 35More dyssynchronyVentricular dysfunctionPatient selectionDyssynchronyPatientsSPECT perfusionDysfunction