2016
Pulmonary Vascular Distensibility Predicts Pulmonary Hypertension Severity, Exercise Capacity, and Survival in Heart Failure
Malhotra R, Dhakal B, Eisman A, Pappagianopoulos P, Dress A, Weiner R, Baggish A, Semigran M, Lewis G. Pulmonary Vascular Distensibility Predicts Pulmonary Hypertension Severity, Exercise Capacity, and Survival in Heart Failure. Circulation Heart Failure 2016, 9: e003011. PMID: 27301469, PMCID: PMC4911900, DOI: 10.1161/circheartfailure.115.003011.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntihypertensive AgentsArterial PressureCase-Control StudiesDouble-Blind MethodExercise TestExercise ToleranceFemaleHeart FailureHumansHypertension, PulmonaryKaplan-Meier EstimateLinear ModelsMaleMiddle AgedModels, CardiovascularMultivariate AnalysisPhosphodiesterase 5 InhibitorsPredictive Value of TestsProportional Hazards ModelsProspective StudiesPulmonary ArteryRisk AssessmentRisk FactorsSeverity of Illness IndexSildenafil CitrateStroke VolumeTime FactorsTreatment OutcomeVascular StiffnessVasodilator AgentsVentricular Function, RightConceptsPV distensibilityPulmonary arterial hypertensionReduced ejection fractionHeart failureEjection fractionExercise capacityArterial hypertensionHF patientsRight ventricular ejection fractionPulmonary artery wedge pressureReduced ejection fraction groupPulmonary arterial hypertension groupFirst-pass radionuclide ventriculographyPulmonary vasodilator therapyRV systolic functionVentricular ejection fractionLeft heart failurePulmonary artery pressureEjection fraction groupPulmonary hypertension severityRight ventricular performanceArterial hypertension groupInvasive hemodynamic monitoringWeeks of treatmentPredictors of peak VO2
2014
Mechanisms of Exercise Intolerance in Heart Failure With Preserved Ejection Fraction
Dhakal B, Malhotra R, Murphy R, Pappagianopoulos P, Baggish A, Weiner R, Houstis N, Eisman A, Hough S, Lewis G. Mechanisms of Exercise Intolerance in Heart Failure With Preserved Ejection Fraction. Circulation Heart Failure 2014, 8: 286-294. PMID: 25344549, PMCID: PMC5771713, DOI: 10.1161/circheartfailure.114.001825.Peer-Reviewed Original ResearchConceptsHeart failureExercise capacityEjection fractionC(a-v)O2Peripheral O2 extractionMechanisms of exercise intoleranceElevated systemic blood pressureIV heart failureReduced ejection fractionCardiac filling pressuresInvasive hemodynamic monitoringMaximum incremental cardiopulmonary exercise testingPeripheral microvascular functionPeak respiratory exchange ratioSystemic blood pressureImpaired exercise capacityO2 extractionPredictors of peak VO2Cardiopulmonary exercise testingIncremental cardiopulmonary exercise testImpairing O2 extractionNYHA IIPeak heart ratePeak oxygen uptakeIntrinsic abnormality