1997
Gender Differences in Presentation, Management, and Cardiac Event-Free Survival in Patients With Syncope
Freed L, Eagle K, Mahjoub Z, Gold M, Smith A, Terrell L, O’Gara P, Paul S. Gender Differences in Presentation, Management, and Cardiac Event-Free Survival in Patients With Syncope. The American Journal Of Cardiology 1997, 80: 1183-1187. PMID: 9359547, DOI: 10.1016/s0002-9149(97)00637-1.Peer-Reviewed Original ResearchConceptsCardiac event-free survivalAbnormal signal-averaged electrocardiogramEvent-free survivalSignal-averaged electrocardiogramCardiac event-free survival rateEvent-free survival rateGender-based differencesLeft ventricular dysfunctionPrognosis of patientsVentricular ejection fractionSignal-averaged electrocardiographyMassachusetts General HospitalCardiac causesVentricular dysfunctionCardiac eventsElectrophysiologic testingCardiac syncopeConsecutive patientsCoronary angiographyEjection fractionHospital admissionClinical presentationVentricular arrhythmiasHolter monitoringGeneral HospitalRelation of Ultra-Low Frequency Heart Rate Variability to the Clinical Course of Chronic Aortic Regurgitation
Freed L, Stein K, Borer J, Hochreiter C, Supino P, Devereux R, Roman M, Kligfield P. Relation of Ultra-Low Frequency Heart Rate Variability to the Clinical Course of Chronic Aortic Regurgitation. The American Journal Of Cardiology 1997, 79: 1482-1487. PMID: 9185637, DOI: 10.1016/s0002-9149(97)00175-6.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAortic Valve InsufficiencyChronic DiseaseCineangiographyElectrocardiography, AmbulatoryFemaleHeart RateHumansMaleMiddle AgedProspective StudiesRadionuclide ImagingStroke VolumeSurvival AnalysisConceptsFrequency heart rate variabilityHeart rate variabilityChronic aortic regurgitationEnd-point eventsAortic regurgitationSymptomatic patientsNew York Heart Association functional class IChronic severe aortic regurgitationLeft ventricular ejection fractionLV end-diastolic dimensionLV end-systolic dimensionMeasures of HRVRate variabilitySevere aortic regurgitationAortic valve replacementEnd-diastolic dimensionCongestive heart failureEnd-systolic dimensionFunctional class IVentricular ejection fractionSudden cardiac deathRegurgitant valvular diseaseClinical outcome eventsMean RR intervalAverage annual risk
1996
Rhythm annotation and interobserver reproducibility of measures of heart rate variability
Kroll D, Freed L, Stein K, Borer J, Kligfield P. Rhythm annotation and interobserver reproducibility of measures of heart rate variability. The American Journal Of Cardiology 1996, 78: 1055-1057. PMID: 8916491, DOI: 10.1016/s0002-9149(96)00537-1.Peer-Reviewed Original Research
1994
Reproducibilfty of power spectral measures of heart rate variability obtained from short-term sampling periods
Freed L, Stein K, Gordon M, Urban M, Kligfield P. Reproducibilfty of power spectral measures of heart rate variability obtained from short-term sampling periods. The American Journal Of Cardiology 1994, 74: 972-973. PMID: 7977138, DOI: 10.1016/0002-9149(94)90604-1.Peer-Reviewed Original Research