three-dimensional electroanatomic la reconstruction carto 3  (Biosense Webster)

Journal: International Journal of Cardiology. Heart & Vasculature

Article Title: Very high-power short-duration temperature-controlled ablation versus conventional power-controlled ablation for pulmonary vein isolation: The fast and furious - AF study

doi: 10.1016/j.ijcha.2021.100847

Figure Lengend Snippet: QDOT Micro ablation catheter and QMODE+ A: Three-dimensional electroanatomic reconstruction (CARTO 3, UNIVIEW module, Biosense Webster) of the left atrium of case #2 in PA view. Please note the two circles depicted through red-white tags created by radiofrequency ablation utilizing the QDOT Micro catheter in the QMODE+ ablation mode. The data of location 1 ablation point is depicted in the right sided diagram of the figure and shows the biophysics parameters of a very-high power short duration ablation by 90 W/4 s. The parameters of power (W) Impedance (Ω), temperature (°C) and contact force (g) are shown. B: Picture of the QDOT Micro catheter tip showing the three micro-electrodes on top of the tip. The black arrow highlights one micro-electrode. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)

Article Snippet: Three-dimensional electroanatomic LA reconstruction (CARTO 3, Biosense Webster) was performed via fast anatomical mapping (FAM) with a multi-electrode spiral mapping catheter.

Techniques:

Journal: The American Journal of Case Reports

Article Title: Treatment of Macro-Reentry Atrial Tachycardia with Very High-Power, Short-Duration, Temperature-Controlled Ablation of Anterior Line Using an Open-Irrigated Ablation Catheter with Microelectrodes

doi: 10.12659/AJCR.934081

Figure Lengend Snippet: Periprocedural electrocardiograms (ECGs): Prolongation of atrial tachycardia (AT) cycle lengths (CLs). ( A ) Surface and intracardiac ECGs at baseline. The atrial CL is stable at 300 ms. CS – coronary sinus catheter placed distal in the coronary sinus; spiral – spiral mapping catheter placed inside the left atrial appendage (LAA); Ablation (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 – microelectrodes; A – atrium; V – ventricle. Speed 100 mm/s. ( B ) An electroanatomic map of the left atrium utilizing CARTO 3, V7 (Biosense Webster). Left side, right anterior oblique view. A local activation time map with evidence of a peri-mitral AT, suggesting the critical isthmus at the anterior wall (white arrow). Coppery area – zone of slow or no conduction. Right side, left anterior oblique (LAO) view. A voltage map with evidence of a large scar area on the anterior wall. The bipolar voltage reference interval was set between 0.1 mV and 0.5 mV. ( C ) Surface and intracardiac electrocardiograms at prolongation of CL during ablation of the anterior wall near the mitral annulus. Note the prolongation of atrial CLs from 300 ms to 400 ms to 700 ms after starting radiofrequency (RF) ablation with 90 W/4 s. The black arrows indicate small potentials on the microelectrodes. There are no signals visible on the Abl d and Abl p electrodes. The total RF ablation time at CL prolongation was 12 s. CS – coronary sinus catheter placed distal in the coronary sinus; spiral – spiral mapping catheter placed inside the LAA; 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 – microelectrodes; A – atrium; V – ventricle; black triangle – start of ablation; black star – prolongation of CL. Speed 100 mm/s. ( D ) An electroanatomic map of the left atrium during ablation of the anterior wall. Left side, right anterior oblique view; right side, LAO oblique view. Note the ablation catheter in the anterior wall during delivery of a very high-power short-duration application of 90 W/4 s. The contact force was 19 g and the distance from the previous application was 4.7 mm. The “bullseye” in the left upper corner indicates the temperature of the ablation catheter tip. Source: Property of C. Heeger.

Article Snippet: Three-dimensional electroanatomic LA reconstruction (CARTO 3 V7; Biosense Webster) was performed via fast anatomical mapping with a multi-electrode spiral mapping catheter (15-mm fixed size, 20 electrodes, Lasso Nav; Biosense Webster).

Techniques: Activation Assay

Journal: The American Journal of Case Reports

Article Title: Treatment of Macro-Reentry Atrial Tachycardia with Very High-Power, Short-Duration, Temperature-Controlled Ablation of Anterior Line Using an Open-Irrigated Ablation Catheter with Microelectrodes

doi: 10.12659/AJCR.934081

Figure Lengend Snippet: Periprocedural electrocardiograms: Termination of AT. ( A, B ) Surface and intracardiac electrocardiograms with the ablation catheter at the location of termination of the atrial tachycardia (AT) at the anterior wall. The black arrows indicate the sharp potentials on the microelectrodes. Small, fragmented potentials are visible on ablation (Abl) d electrodes at the same time. The cycle length of 400 ms was prolonged to 450 ms and stopped application of ablation application for 1200 ms (large arrow). The total radiofrequency ablation time at termination was 40 s. CS – coronary sinus catheter placed distal in the coronary sinus; spiral – spiral mapping catheter placed inside the left atrial appendage; 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; A – atrium; V – ventricle; black triangle – start of ablation; black star – termination of AT. Speed 100 mm/s. ( C ) An electroanatomic map of the left atrium using CARTO 3, V7 (Biosense Webster). Left side, right anterior oblique and right side, left anterior oblique views during ablation at the anterior wall. Note the ablation catheter in the anterior wall during delivery of a very high-power, short-duration application of 90 W/4 s. The “bullseye” in the upper left corner shows the temperature of the ablation catheter tip. White arrow – application of AT termination. ( D ) An electroanatomic map of the left atrium with the final lesion set up with an anterior line and pulmonary vein isolation depicted by red dots with white points. Source: Property of C. Heeger.

Article Snippet: Three-dimensional electroanatomic LA reconstruction (CARTO 3 V7; Biosense Webster) was performed via fast anatomical mapping with a multi-electrode spiral mapping catheter (15-mm fixed size, 20 electrodes, Lasso Nav; Biosense Webster).

Techniques: Isolation