James B. Seward
Mayo Clinic
Internal medicineRadiologySurgeryDoppler effectCardiologyHemodynamicsCardiac catheterizationMitral valveHeart failureVentricleAtrial fibrillationHeart diseaseRegurgitation (circulation)Doppler echocardiographyMitral regurgitationIn patientMyocardial infarctionDiastoleMedicineEjection fraction
Publications 580
#1Michael F. O'Rourke (UNSW: University of New South Wales)H-Index: 90
#2James B. SewardH-Index: 137
The ubiquitous brachial cuff method gained widespread clinical acceptance for blood pressure recording after confirmation of its prognostic value in 1917. This method displaced radial pulse waveform analysis by sphygmography, which also gave prognostic information but was difficult to use. Since that time, brachial cuff sphygmomanometry has migrated from the physician's office to 24-hour monitoring and home use, with electronic methods replacing the Korotkov sound technique for determining systo...
104 CitationsSource
#1Yoko Miyasaka (Mayo Clinic)H-Index: 12
#2Marion E. Barnes (Mayo Clinic)H-Index: 35
Last. Teresa S.M. Tsang (Mayo Clinic)H-Index: 56
view all 8 authors...
Background— Limited data exist on trends in incidence of atrial fibrillation (AF). We assessed the community-based trends in AF incidence for 1980 to 2000 and provided prevalence projections to 2050. Methods and Results— The adult residents of Olmsted County, Minnesota, who had ECG-confirmed first AF in the period 1980 to 2000 (n=4618) were identified. Trends in age-adjusted incidence were determined and used to construct model-based prevalence estimates. The age- and sex-adjusted incidence of A...
3,069 CitationsSource
#1Walter P. Abhayaratna (Mayo Clinic)H-Index: 15
#2James B. Seward (Mayo Clinic)H-Index: 137
Last. Teresa S.M. Tsang (Mayo Clinic)H-Index: 56
view all 7 authors...
Left atrial (LA) enlargement has been proposed as a barometer of diastolic burden and a predictor of common cardiovascular outcomes such as atrial fibrillation, stroke, congestive heart failure, and cardiovascular death. It has been shown that advancing age alone does not independently contribute to LA enlargement, and the impact of gender on LA volume can largely be accounted for by the differences in body surface area between men and women. Therefore, enlargement of the left atrium reflects re...
1,131 CitationsSource
#1Yoko Miyasaka (Mayo Clinic)H-Index: 12
#2Marion E. Barnes (Mayo Clinic)H-Index: 35
Last. Teresa S.M. Tsang (Mayo Clinic)H-Index: 56
view all 9 authors...
Aims We sought to determine whether the incidence of and survival following congestive heart failure (CHF) in patients with atrial fibrillation (AF) have changed over time. Methods and results Olmsted County, Minnesota residents diagnosed with first AF during 1980–2000 were identified and followed in medical records to 2004. The trends of incidence and survival of CHF over time were assessed. Of the 3288 subjects (mean age 71±15 years) diagnosed with first AF and without CHF prior to or at AF di...
179 CitationsSource
#1Hsin-Yueh Liang (Mayo Clinic)H-Index: 9
#2Sanderson Cauduro (Mayo Clinic)H-Index: 8
Last. Theodore P. Abraham (Mayo Clinic)H-Index: 66
view all 10 authors...
We sought to determine whether the echocardiographic Doppler parameters of left ventricular diastolic dysfunction predict future heart failure (HF) events and, if so, which parameters best predict HF. We also examined whether the predictive ability of echocardiographic Doppler parameters was related to their prediction of left ventricular end-diastolic pressure (LVEDP). We studied patients who underwent cardiac catheterization and echocardiography performed within a 30-day period. The end point ...
112 CitationsSource
#1Teresa S.M. Tsang (Mayo Clinic)H-Index: 56
#2Walter P. Abhayaratna (Mayo Clinic)H-Index: 15
Last. James B. Seward (Mayo Clinic)H-Index: 137
view all 8 authors...
Objectives We sought to compare left atrial (LA) volume to LA area and diameter for the prediction of adverse cardiovascular outcomes. Background The incremental value of LA volume compared with LA area or diameter as a cardiovascular risk marker has not been evaluated prospectively for patients with sinus rhythm or atrial fibrillation (AF). Methods Left atrial size was assessed with biplane LA volume, four-chamber LA area, and M-mode dimension for 423 patients (mean age 71 ± 8 years, 56% men) w...
813 CitationsSource
#1Ahmed A. Alsaileek (Mayo Clinic)H-Index: 5
#1Ahmed Alsaileek (Mayo Clinic)H-Index: 3
Last. James B. Seward (Mayo Clinic)H-Index: 137
view all 6 authors...
OBJECTIVES Our objective was to evaluate whether normal left atrial volume index (LAVI) is a predictor of a normal stress echocardiogram and thus a predictor of low ischemic risk. BACKGROUND Left atrial enlargement is closely related to the chronicity and intensity of the burden of increased ventricular filling pressure. Typically ischemic heart disease (IHD) has a long period of subclinical dysfunction. Increased filling pressure, reflected by enlarged LAVI, is hypothesized to mirror the burden...
53 CitationsSource
#1Martin Osranek (Mayo Clinic)H-Index: 8
#2Francesca Bursi (Mayo Clinic)H-Index: 24
Last. James B. Seward (Mayo Clinic)H-Index: 137
view all 8 authors...
Aims The objectives of this study were to determine the long-term outcome and the predictors of adverse events in patients originally diagnosed with lone atrial fibrillation (AF). Methods and results This population-based historical cohort study comprised 46 residents of Olmsted County, MN, USA, with well-documented, clinically defined lone AF and a complete two-dimensional echocardiographic examination. The original echocardiographic videotape recordings were analysed in a blinded fashion for l...
258 CitationsSource
#1Saeed A.L. Ahmari (Mayo Clinic)H-Index: 3
#2Karen M. Modesto (Mayo Clinic)H-Index: 10
Last. Krishnaswamy Chandrasekaran (Mayo Clinic)H-Index: 35
view all 8 authors...
Background: The coronary flow velocity (CFV) has been used to estimate coronary flow reserve (CFR) during dobutamine stress echocardiography (DSE). However, the relationship of the CFR to myocardial wall thickening (WT) has not been investigated. Objectives: The aims of this study were: (1) to assess the feasibility of obtaining systolic and diastolic CFV and thus CFR during DSE and (2) to assess the relation between CFR and stress induced WT. Methods: Distal left anterior descending CFV was rec...
9 CitationsSource
#1Partho P. Sengupta (Mayo Clinic)H-Index: 58
#2Bijoy K. Khandheria (Mayo Clinic)H-Index: 71
Last. Marek Belohlavek (Mayo Clinic)H-Index: 42
view all 7 authors...
Objectives We investigated whether the onset and progression of regional left ventricular (LV) shortening and lengthening parallel the apex-to-base differences in depolarization and repolarization. Background Limited information exists regarding apex-to-base differences in longitudinal and circumferential deformation sequence of the LV. Methods The apex-to-base differences in electric activation and the progression of longitudinal and circumferential shortening and lengthening sequences were det...
288 CitationsSource