Simultaneous biplane single-beat assessment of left ventricular systolic function in patients with atrial fibrillation

Wang, Chunli; Lin, Kuo‐Hung; Luqman, Nazar; Chu, Pao‐Hsien; Hsu, Lung‐An; Kuo, Chi‐Tai

doi:10.1016/j.amjcard.2004.06.035

Cited by 12 publications

(20 citation statements)

References 10 publications

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“…Sumida et al and Wang et al have demonstrated previously that the left ventricular systolic parameters measured at a single beat with equal subsequent cycles could be used to estimate the average values of 13 beats [13,14]. However, Tabata et al countered the use of singlebeat determination because they found that there were still substantial variations between the values determined from the beats with equal subsequent cycles from an analysis of more than 100 consecutive cardiac cycles.…”

Section: Discussionmentioning

confidence: 90%

“…Prior studies have demonstrated that the ratio of subsequent cardiac cycles equals 1 could be used with the regression line to determine the representative values of left ventricular systolic parameters [9,[11][12][13][14]. However, the correct estimation principally requires substitution of the ratio = 1 in the regression line that is obtained from a large number of cardiac cycles [9,12].…”

Section: Discussionmentioning

confidence: 98%

“…Single-beat method [13,14] has been proposed for estimating the average left ventricular function for patients with atrial fibrillation by extrapolating the results of regression method and may not be accurate for a wide range of irregular preceding R -R and pre-preceding R -R intervals. We have demonstrated that the cycle-length variations can influence the values at the beats with equal subsequent cycles.…”

Section: Discussionmentioning

confidence: 99%

“…The matrix-array transducer allows a biplane assessment to be accomplished easily by acquiring the apical 4-and 2-chamber views simultaneously. Orthogonal views of the same beat obviate the error of averaging multiple beats in patients with atrial fibrillation [14].…”

Section: Discussionmentioning

confidence: 99%

“…Sumida et al extended that work by showing that single-beat determination of Doppler derived stroke volume using data at the beat with equal preceding R -R and pre-preceding R -R intervals (equal subsequent cycles) could be applied for estimating the average value of 13 beats in patients with atrial fibrillation [13]. Wang et al previously used a novel simultaneous biplane approach to assess left ventricular volumes and ejection fraction during atrial fibrillation and found a similar result [14].…”

Section: Introductionmentioning

confidence: 89%

See 4 more Smart Citations

Biplane assessment of left ventricular function during atrial fibrillation at beats with equal subsequent cycles

Wang

Luqman

et al. 2006

International Journal of Cardiology

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 89%

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Biplane assessment of left ventricular function during atrial fibrillation at beats with equal subsequent cycles

Wang

Luqman

et al. 2006

International Journal of Cardiology

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Renal function improvement correlates with 3D echocardiographic findings: Effect of surgical mitral valve repair

Wang,

Yang,

Shi

et al. 2024

J of Clinical Ultrasound

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BackgroundThe association between surgical treatment of mitral regurgitation (MR) and renal function is not sufficiently well‐known. We tried to evaluate renal function before and after the procedure of surgical mitral valve repair (SMVR) in degenerative severe MR.MethodsPatients with primary severe (4+) MR and normal left ventricular ejection fraction (LVEF) that underwent SMVR, examined by a cutting‐edge 3‐dimensional (3D) echocardiographic probe were enrolled in this study. We took three CKD‐EPI equations to measure estimated glomerular filtration rate (eGFR) before SMVR and shortly before patients discharge. A total of 40 patients with baseline lower mean eGFR were evaluated.ResultsMeasurements substantiated statistically significant improvements in eGFR (p < 0.001), multivariable linear regression modeling indicating prominent associations between increase in eGFR and decrease of MR (p = 0.003), decline of pulmonary arterial systolic pressure (p = 0.018), as well as increment of forward stroke volume (p = 0.02), in spite of LVEF reduction, left ventricular global longitudinal strain worsening and left atrial ejection fraction impairment.ConclusionsRenal function improves after SMVR in patients with degenerative significant MR and preserved LVEF, regardless of cardiac functional worsening.

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Dynamic Regularized Adaptive Cluster Optimization (DRACO) for Quantitative Cardiac Cine MRI in Complex Arrhythmias

Ming,

Pogosyan,

Christodoulou

et al. 2024

Magnetic Resonance Imaging

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BackgroundIrregular cardiac motion can render conventional segmented cine MRI nondiagnostic. Clustering has been proposed for cardiac motion binning and may be optimized for complex arrhythmias.PurposeTo develop an adaptive cluster optimization method for irregular cardiac motion, and to generate the corresponding time‐resolved cine images.Study TypeProspective.SubjectsThirteen with atrial fibrillation, four with premature ventricular contractions, and one patient in sinus rhythm.Field Strength/SequenceFree‐running balanced steady state free precession (bSSFP) with sorted golden‐step, reference real‐time sequence.AssessmentEach subject underwent both the sorted golden‐step bSSFP and the reference Cartesian real‐time imaging. Golden‐step bSSFP images were reconstructed using the dynamic regularized adaptive cluster optimization (DRACO) method and k‐means clustering. Image quality (4‐point Likert scale), signal‐to‐noise ratio (SNR), contrast‐to‐noise ratio (CNR), edge sharpness, and ventricular function were assessed.Statistical TestsPaired t‐tests, Friedman test, regression analysis, Fleiss' Kappa, Bland–Altman analysis. Significance level P < 0.05.ResultsThe DRACO method had the highest percent of images with scores ≥3 (96% for diastolic frame, 93% for systolic frame, and 93% for multiphase cine) and the percentages were significantly higher compared with both the k‐means and real‐time methods. Image quality scores, SNR, and CNR were significantly different between DRACO vs. k‐means and between DRACO vs. real‐time. Cardiac function analysis showed no significant differences between DRACO vs. the reference real‐time.ConclusionDRACO with time‐resolved reconstruction generated high quality images and has early promise for quantitative cine cardiac MRI in patients with complex arrhythmias including atrial fibrillation.Level of Evidence1.Technical EfficacyStage 2.

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Simultaneous biplane single-beat assessment of left ventricular systolic function in patients with atrial fibrillation

Cited by 12 publications

References 10 publications

Biplane assessment of left ventricular function during atrial fibrillation at beats with equal subsequent cycles

Biplane assessment of left ventricular function during atrial fibrillation at beats with equal subsequent cycles

Renal function improvement correlates with 3D echocardiographic findings: Effect of surgical mitral valve repair

Dynamic Regularized Adaptive Cluster Optimization (DRACO) for Quantitative Cardiac Cine MRI in Complex Arrhythmias

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