2011
85% of maximal age-predicted heart rate is not a valid endpoint for exercise treadmill testing
Jain M, Nkonde C, Lin BA, Walker A, Wackers FJ. 85% of maximal age-predicted heart rate is not a valid endpoint for exercise treadmill testing. Journal Of Nuclear Cardiology 2011, 18: 1026-1035. PMID: 21922347, DOI: 10.1007/s12350-011-9454-0.Peer-Reviewed Original ResearchConceptsMaximal age-predicted heart rateAge-predicted heart rateInducible ischemiaPeak exerciseExercise testingPositive ECGHeart rateExercise endpointPositive exercise ECGExercise treadmill testingRegistry patientsProspective registryExercise capacityRetrospective cohortTreadmill testingPatient cohortExercise ECGValid endpointPatientsMore womenEndpointIschemiaClinical laboratoriesECGCohort
2001
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 infusionDeltaLVEF