The Objective of This Multicentre Study is to Collect Operative Data on the Related Clinical Functional Outcomes and Complications and of Market Approved Alcis Electrophysiology Catheters to Demonstrate Safety and Performance of These Devices in a Real-world Setting

"The Xtrem electrophysiology catheter was developed for diagnosis of cardiac arrhythmias. Their function is to collect by contact, electrical signals generated by the heart muscle.~Xtrem are inserted via femoral vena cava or via artery and can be used in two occasions:~* Exploration procedures for diagnosis alone~* Diagnosis before ablation procedure An extension cable is used to connect the catheter to a stimulation/ recording device."