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A novel ECG-based algorithm to determine right ventricular lead placement in permanent pacemaker patients (RVpace
Dariusz Zajac1, Michal M Farkowski1, Ilona Kowalik1
1Heart Arrhythmia Ward, II Department of Coronary Artery Disease, Institute of Cardiology, Warsaw, Poland.
A new electrocardiogram (ECG) algorithm accurately localizes pacing leads (PL) in the right ventricle (RV) during cardiac implantable electronic device (CIED) procedures. This method improves lead placement accuracy compared to fluoroscopy alone.
Area of Science:
- Cardiology
- Medical Devices
- Electrophysiology
Background:
- Fluoroscopy alone is insufficient for precise pacing lead (PL) placement in the right ventricle (RV) during cardiac implantable electronic device (CIED) implantation.
- Accurate PL positioning is critical for optimal device function and patient outcomes.
Purpose of the Study:
- To develop and validate a surface electrocardiogram (ECG) algorithm using paced QRS (pQRS) morphology for accurate PL localization within the RV.
Main Methods:
- pQRS morphology was recorded from pacing sites in the RV (interventricular septum, apex, free wall) of 30 patients undergoing ablation.
- A stepwise ECG algorithm was created based on pQRS analysis.
- The algorithm was prospectively validated in 31 patients undergoing pacemaker generator exchange.
Main Results:
- The algorithm demonstrated 90.3% agreement with echocardiography for RV lead localization.
- Sensitivity for correct lead placement was 92.5%, with a positive predictive value of 96.0%.
Conclusions:
- A simple ECG algorithm reliably differentiates permanent PL implantation sites in the RV for CIED recipients.
- This ECG-based method offers a valuable tool for improving lead placement accuracy.
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