Long Term Evaluation of Cardiac Arrhythmias After Transcatheter Aortic Valve Implantation -The LOCATE Registry

This study is a registry that tracks patients who received a heart valve replacement procedure called TAVI (transcatheter aortic valve implantation) and then developed heart rhythm problems (conduction abnormalities). Participants have an implantable heart monitor (loop recorder) placed to track their heart rhythm long-term. **You may be eligible if...** - You are over 18 years old with severe aortic stenosis (a narrowing of the heart valve) - You have undergone TAVI and developed one of these heart rhythm issues afterward: new left bundle branch block, new first-degree AV block, new right bundle branch block, or temporary higher-degree AV block during the procedure - You have already had a small implantable loop recorder (ILR) placed for long-term heart monitoring **You may NOT be eligible if...** - You need a permanent pacemaker urgently after TAVI - You already have an implantable cardiac device (pacemaker, ICD) - You cannot comply with follow-up visits Talk to your doctor to see if this trial is right for you.