ArticleJACC. Case reports2025
Detection of Epicardial Late Potentials by Endocardial Wide-Bipolar Mapping in a Case of Cardiac Sarcoidosis.
Article in JACC. Case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
backgroundIdentifying substrates for ventricular tachycardia (VT) from the endocardium is often difficult when the arrhythmia originates from the epicardium. CASE SUMMARY: A 72-year-old man with sustained VT and a left ventricular aneurysm due to cardiac sarcoidosis underwent left ventricular mapping using a high-density mapping catheter. With conventional omnipolar configuration, no low-voltage area or abnormal potentials were identified. However, reconstruction of the isochronal late activation map with wide-bipolar configuration revealed low-frequency late potentials within the aneurysm. Subsequent epicardial mapping demonstrated extensive late potentials on the contralateral side, and ablation at this site was successful in eliminating VT. DISCUSSION: Wide-bipolar electrograms include more far-field components than close-bipolar or omnipolar signals, enabling detection of epicardial-originated potentials from the endocardium. TAKE-HOME MESSAGE: When late potentials are not evident with conventional configurations, wide-bipolar electrograms may uncover epicardial substrates from the endocardial surface.
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