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