Electrocardiographic prediction of left ventricular hypertrophy in women and men with left bundle branch block – Comparison of QRS duration, amplitude and voltage-time-integral

DeBauge, Ashley; Fairbank, Tyan; Harvey, Christopher J.; Ranka, Sagar; Jiwani, Sania; Sheldon, Seth H.; Reddy, Madhu; Beaver, Timothy A.; Noheria, Amit

doi:10.1016/j.jelectrocard.2023.03.004

Cited by 5 publications

(2 citation statements)

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“…VTI QRS-3D is calculated as the temporal integration of the instantaneous absolute 3D voltage for the duration of the QRS. 3 An approximation of VTI QRS-3D is 3D QRS area. 3D QRS area is obtained by first calculating the individual areas subtended by the QRSs in X, Y, and Z leads (VTI QRS-X , VTI QRS-Y and VTI QRS-Z ), and then taking the root-meansquare of these three areas.…”

Section: Introductionmentioning

confidence: 99%

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Different methods of 3D QRS area calculation from vectorcardiographic X, Y, and Z Leads

Noheria,

Toquica,

Mahmood

et al. 2024

Pacing Clinical Electrophis

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Abstract3DQRSarea is a strong marker for cardiac resynchronization therapy and can be obtained by taking the (i) summation or the (ii) difference of the areas subtended by positive and negative deflections in X, Y, Z vectorcardiographic electrocardiogram (ECG) leads. We correlated both methods with the instantaneous‐absolute‐3D‐voltage‐time‐integral (VTIQRS‐3D). 3DQRSarea consistently underestimated the VTIQRS‐3D, but the summation method was a closer and more reliable approximation. The dissimilarity was less apparent in left bundle branch block (r2 summation .996 vs. difference .972) and biventricular paced ECGs (r2 .996 vs. .957) but was more apparent in normal ECGs (r2 .988 vs. .653).

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Section: Introductionmentioning

confidence: 99%

“…The instantaneous absolute 3D voltage can be obtained by root‐mean‐square of the instantaneous voltage in X, Y, and Z leads. VTI QRS‐3D is calculated as the temporal integration of the instantaneous absolute 3D voltage for the duration of the QRS 3 . An approximation of VTI QRS‐3D is 3D QRS area.…”

Section: Introductionmentioning

confidence: 99%