A model study of the sensitivity of body surface potential distribution to variations of electrode placement

Turzová, M; Tyšler, Milan; Kneppo, Peter

doi:10.1016/s0022-0736(94)80010-3

Cited by 6 publications

(1 citation statement)

References 10 publications

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“…In our analysis, more prominent morphology changes of ECG waves were found for electrode displacements of 2 cm or higher. This supports the results of simulation study performed by Turzova et al [33] where the mean relative error between body surface potential maps estimated in standard and vertically shifted electrodes’ positions remained less than 5 % up to ±2 cm shift. Beyond the threshold value set to 2 cm differences in BSPM steeply increased [33].…”

Section: Discussionsupporting

confidence: 92%

The effect of precordial lead displacement on ECG morphology

Kania

Rix

Fereniec

et al. 2013

Med Biol Eng Comput

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Inaccurate electrode placement and differences in inter-individual human anatomies can lead to misinterpretation of ECG examination. The aim of the study was to investigate the effect of precordial electrodes displacement on morphology of the ECG signal in a group of 60 patients with diagnosed cardiac disease. Shapes of ECG signals recorded from precordial leads were compared with signals interpolated at the points located at a distance up to 5 cm from lead location. Shape differences of the QRS and ST-T-U complexes were quantified using the distribution function method, correlation coefficient, root-mean-square error (RMSE), and normalized RMSE. The relative variability (RV) index was calculated to quantify inter-individual variability. ECG morphology changes were prominent in all shape parameters beyond 2 cm distance to precordial leads. Lead V2 was the most sensitive to displacement errors, followed by leads V3, V1, and V4, for which the direction of electrodes displacement plays a key role. No visible changes in ECG morphology were observed in leads V5 and V6, only scaling effect of signal amplitude. The RV ranged from 0.639 to 0.989. Distortions in ECG tracings increase with the distance from precordial lead, which are specific to chosen electrode, direction of displacement, and for ECG segment selected for calculations.

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Section: Discussionsupporting

confidence: 92%