Nov 26, 2020 · To identify the correlation between the unipolar and bipolar maps, the sensitivity, and specificity were calculated. The bipolar map was considered as the “true condition” and the electrogram at each point of the unipolar map was classified …

Sep 29, 2003 · Unipolar and bipolar activation maps constructed during FAT (left, CL=390 ms) and AFL (right, CL=250 ms) in anteroposterior and caudal view, respectively. Examples of electrograms are shown outside activation maps.

Jun 18, 2021 · The electrode orientation dependence of bipolar mapping is clearly visualized by the considerable differences in voltages between the bipolar-x and bipolar-y voltage maps. Bipolar-max voltage map illustrates the maximal bipolar voltage in both horizontal and vertical orientations within one clique.

Omnipolar mapping (OT) is a novel tool to acquire omnipolar signals for electro-anatomical mapping, displaying true voltage and real-time wavefront direction and speed independent of catheter orientation.

Electroanatomic mapping (EAM) is one such advancement, allowing operators to record intracardiac electrical activation in relation to anatomic location in a cardiac chamber of interest, during arrhythmia mapping. Several EAM systems are …

Mar 31, 2015 · These findings suggest that use of a combined bipolar/unipolar map may be able to improve the diagnostic yield of endomyocardial ventricular biopsy. Bipolar electroanatomic voltage mapping (EVM) improves diagnostic sensitivity of endomyocardial biopsy when used to guide withdrawal site.

BACKGROUND Omnipolar technology (OT) was recently proposed to generate electroanatomic voltage maps with orientation-independent electrograms. We describe the first cohort of patients undergoing ventricular tachycardia (VT) ablation guided by OT.

Jan 19, 2025 · Multipolar mapping, a novel method of electrogram acquisition and annotation distinct from unipolar and bipolar acquisitions, provides orientation-independent near-field signal acquisition with enhanced spatial precision. Multipolar …

Bipolar voltage maps were acquired at high density (mean of 1,250 mapped LA sites per rhythm) at multiple bipole positions during mapping to eliminate inaccuracies due to the angle of bipole to...

Mar 15, 2022 · We defined significant LVZ as sites with voltage <0.50 mV and covering >5.0 cm 2 by omnipolar Vmax, bipolar peak-to-peak HD wave voltage map, and conventional bipolar electrograms acquired from electrode pairs along to and across to the catheter shaft. LVZ was measured on each map.