Key result
A novel non-invasive ECG imaging method based on the standard 12-lead ECG accurately localized the right ventricular pacing site with a mean geodesic localization error of 13.9 mm compared to cardiac CT.
Why the study?
Current non-invasive ECG imaging methods often rely on complex body surface potential mapping, limiting clinical applicability.
Does a novel non-invasive ECG imaging method based on the standard 12-lead ECG accurately localize the initial site of ventricular activation in right ventricular paced patients compared to cardiac CT?
Observational (n=34)
No
Does a novel non-invasive ECG imaging method based on the standard 12-lead ECG accurately localize the initial site of ventricular activation in right ventricular paced patients compared to cardiac CT?
A novel non-invasive ECG imaging method based on the standard 12-lead ECG can accurately localize the right ventricular pacing site with a mean error of 13.9 mm, potentially offering a simpler alternative to complex body surface potential mapping.
Supports 12-lead ECG imaging for RV pacing localization; leaves open prospective validation before clinical adoption.
Aim Current non-invasive electrocardiographic imaging (ECGi) methods are often based on complex body surface potential mapping, limiting the clinical applicability. The aim of this pilot study was to evaluate the ability of a novel non-invasive ECGi method, based on the standard 12-lead ECG, to localize initial site of ventricular activation in right ventricular (RV) paced patients. Validation of the method was performed by comparing the ECGi reconstructed earliest site of activation against the true RV pacing site determined from cardiac computed tomography (CT). Methods This was a retrospective study using data from 34 patients, previously implanted with a dual chamber pacemaker due to advanced atrioventricular block. True RV lead position was determined from analysis of a post-implant cardiac CT scan. The ECGi method was based on an inverse-ECG algorithm applying electrophysiological rules. The algorithm integrated information from an RV paced 12-lead ECG together with a CT-derived patient-specific heart-thorax geometric model to reconstruct a 3D electrical ventricular activation map. Results The mean geodesic localization error (LE) between the ECGi reconstructed initial site of activation and the RV lead insertion site determined from CT was 13.9 ± 5.6 mm. The mean RV endocardial surface area was 146.0 ± 30.0 cm 2 and the mean circular LE area was 7.0 ± 5.2 cm 2 resulting in a relative LE of 5.0 ± 4.0%. Conclusion We demonstrated a novel non-invasive ECGi method, based on the 12-lead ECG, that accurately localized the RV pacing site in relation to the ventricular anatomy.
No takes yet. Share an insight, caveat, or question.
Fruelund et al. (2023) conducted an observational in Advanced atrioventricular block (n=34). Novel non-invasive ECG imaging (ECGi) method based on the 12-lead ECG vs. Cardiac computed tomography (CT) was evaluated on Geodesic localization error (LE) between the ECGi reconstructed initial site of activation and the RV lead insertion site determined from CT. A novel non-invasive ECG imaging method based on the standard 12-lead ECG accurately localized the right ventricular pacing site with a mean geodesic localization error of 13.9 mm compared to cardiac CT.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: