Figure 5: QDOT MICROTM Catheter for mapping and ablation of premature ventricular contractions
A: Electroanatomic map of the right ventricle utilizing CARTO 3, V7 (Biosense Webster). Left side, left anterior oblique, LAO) view. Earliest activation of the frequent monomorphic premature ventricular contraction (PVC, red pin within red area (Coherent module, Biosense Webster) was found at the antero-septal right ventricular outflow tract (RVOT). Final lesion with 3 very high-power short-duration application of 90 W/4 s depicted by red dots with white points.
B: Surface and intracardiac electrocardiograms with the QDOT MICROTM Catheter at the location of earliest activation of the PVC within RVOT. Please note the potentials on the micro-electrodes (pointed out by black arrows). Abl d = distal electrodes on the map catheter.
Abl p = proximal electrodes on the map catheter. Abl u1-u2, Abl u2-u3, Abl u1-u3 = micro-electrodes. Speed 25 mm/s.