Electrocardiogram-based timings cause systematic errors in vascular strain measures: a method for error correction and estimation of pulse transit time

Nicholas Sculthorpe; Amy Campbell; Alexander Beaumont

doi:10.1016/j.echo.2020.02.002

Electrocardiogram-based timings cause systematic errors in vascular strain measures: a method for error correction and estimation of pulse transit time

Nicholas Sculthorpe^*, Amy Campbell, Alexander Beaumont

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Speckle-tracking ultrasonography has been applied to the assessment of circumferential strain (ɛ) and strain rate (SR) of the common carotid artery (CCA).1-5 Originally developed for echocardiography,6 the analysis of ɛ is tethered to key points of the electrocardiogram (ECG). Thus, to prevent measurement drift, speckle-tracking ultrasonography software assumes no deformation (i.e., 0% ɛ) at the start of the cardiac cycle defined by the QRS wave. However, the pressure wave will take some time to travel from the aortic valve to the insonated section of vasculature, meaning vascular expansion and recoil occur shortly after ventricular systole.

Original language	English
Pages (from-to)	636-638
Number of pages	3
Journal	Journal of the American Society of Echocardiography
Volume	33
Issue number	5
Early online date	12 Mar 2020
DOIs	https://doi.org/10.1016/j.echo.2020.02.002
Publication status	Published - May 2020

Keywords

Short report
Speckle tracking
Echocardiography

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10.1016/j.echo.2020.02.002

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2020 01 31 Sculthorpe et al ECG accepted
Accepted author manuscript, 410 KB
Licence: CC BY-NC-ND
Embargo ends: 12/03/21

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title = "Electrocardiogram-based timings cause systematic errors in vascular strain measures: a method for error correction and estimation of pulse transit time",

abstract = "Speckle-tracking ultrasonography has been applied to the assessment of circumferential strain (ɛ) and strain rate (SR) of the common carotid artery (CCA).1-5 Originally developed for echocardiography,6 the analysis of ɛ is tethered to key points of the electrocardiogram (ECG). Thus, to prevent measurement drift, speckle-tracking ultrasonography software assumes no deformation (i.e., 0% ɛ) at the start of the cardiac cycle defined by the QRS wave. However, the pressure wave will take some time to travel from the aortic valve to the insonated section of vasculature, meaning vascular expansion and recoil occur shortly after ventricular systole.",

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Electrocardiogram-based timings cause systematic errors in vascular strain measures : a method for error correction and estimation of pulse transit time. / Sculthorpe, Nicholas ; Campbell, Amy; Beaumont, Alexander.

In: Journal of the American Society of Echocardiography, Vol. 33, No. 5, 05.2020, p. 636-638.

Research output: Contribution to journal › Article › peer-review

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T1 - Electrocardiogram-based timings cause systematic errors in vascular strain measures

T2 - a method for error correction and estimation of pulse transit time

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AU - Campbell, Amy

AU - Beaumont, Alexander

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KW - Speckle tracking

KW - Echocardiography

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