Key result
Additional ECG offset correction at the beginning of the PVC signal decreased the mean distance between localization results from 17-18 mm to 1-2 mm, significantly improving stability regardless of torso model complexity.
Why the study?
Does additional ECG offset correction improve the stability of premature ventricular contraction origin localization in patients undergoing body surface potential mapping?
Observational (n=14)
No
Does additional ECG offset correction improve the stability of premature ventricular contraction origin localization in patients undergoing body surface potential mapping?
Applying an additional ECG offset correction significantly stabilizes the noninvasive localization of premature ventricular contractions, reducing localization variability to 1-2 mm.
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Offset correction stabilizes single-dipole PVC localization (1-2 mm vs 17-18 mm); leaves open clinical utility pending prospective validation.
Švehlíková et al. (2022) conducted an observational in Premature ventricular contractions (n=14). Additional ECG offset correction (OFC) vs. No additional offset correction (NOFC) was evaluated on Mean distance between inverse localization results (stability of PVC origin localization). Additional ECG offset correction at the beginning of the PVC signal decreased the mean distance between localization results from 17-18 mm to 1-2 mm, significantly improving stability regardless of torso model complexity.
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