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

Who can join

Ages 18 and older · All sexes

Inclusion Criteria:

* Patients \> 18 years of age with severe aortic stenosis that undergo TAVI for severe aortic stenosis that develop any one of the following conduction system abnormalities on the immediate post procedural or post operative ECG and have undergone ILR implantation for long-term monitoring of these conditions:
* New left bundle branch block (QRS \>120ms)
* New first degree AV block (PR\>200ms) or worsening of pre-existing first-degree AV block by \>30ms
* New right bundle branch block (QRS\>120ms)
* Intra-procedural 2:1 or higher-grade AV block with spontaneous improvement within 24 hours

Exclusion Criteria:

* Patients with high grade or complete AV block post TAVI needing urgent pacemakers
* Patient with existing cardiac implantable electronic devices (CIEDs)
* Patients having a particular medical condition that dictates that they cannot tolerate subcutaneous, chronically-inserted device
* Patient is currently pregnant as evidenced by urine positive Beta-HCG. (Urine Beta human chorionic gonadotropin (HCG) will be checked in all females of the reproductive age group).
* Patients not willing to sign the consent, lacks the capacity to sign the consent or revoke the consent after signing will be excluded

About the study

The purpose of the Long term Evaluation of Cardiac Arrhythmias after Transcatheter Aortic Valve Implantation (LOCATE) Registry is to perform long-term ambulatory monitoring of patients with severe aortic stenosis who undergo trans-catheter aortic valve implantation (TAVI) and develop new onset conduction system abnormalities post-procedure that do not require urgent permanent pacemaker (PPM) implantation. The primary objectives of this study are to assess the incidence of late onset heart block necessitating PPM implantation and to evaluate the incidence of new onset atrial fibrillation (AF) following TAVI. This study aims to provide valuable insights into the long-term cardiac health of TAVI patients and inform the development of improved treatment strategies for aortic stenosis patients with conduction system abnormalities.

What is being tested

• TAVR Procedure and implantation of Boston Scientific Loop Recorder (LUX-Dx PMA# K193473) (device)

Sponsor: Kansas City Heart Rhythm Research Foundation · Participants: 50 · Started: Sep 22, 2023

Contact the study team

• Donita Atkins · Phone: 816-651-1969

Official record on ClinicalTrials.gov — NCT06055751

Locations in the U.S.

Conditions

• Aortic Valve Stenosis

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.