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.