Comparison of the Ganglionated Plexi Activity in Patients With Different Forms of Atrial Fibrillation Guided by SUMO Technology

"* Cardiac CT - contract enhanced cardiac CT according to standard protocol~* D-SPECT SUMO study - standard SUMO protocol (suggested reduction in mIBG dose and increase in scan time to minimize overall radiation burden)~* Merge CT and D-SPECT image data to generate SUMO map."

"1. CARTO-reconstruction LA, preferably during same rhythm as SUMO map (generally sinus rhythm) for use during registration of SUMO map in CARTO.~2. High frequency stimulation (HFS; 20-Hz frequency, 5-ms pulse duration, and 15-mA output) to access positive vagal response (the heart rate decreasing by 50% at baseline).~3. RF ablation only at points where there is an HFS positive response to SUMO DUA (in sinus rhythm if AF converts)~4. Target a region of 1.0 - 1.5 cm diameter around the SUMO mIBG DUA~5. Control HFS~6. At operator discretion, conventional PVI by circumferential antral ablation according to standard procedures.~7. Exit and entrance block confirmation~8. Attempt to induce sustained atrial tachycardia; optional mapping and ablation of post-ablation atrial tachycardia."