Pacing devices for heart rhythm problems after a transcatheter aortic valve procedure
Tests a pacing device in adults with lasting conduction delay after aortic valve replacement.
Plain-language title generated from the registry record
Registry title: Biventricular or Left Bundle Branch Pacing to Assess the Effect of Cardiac Resynchronization Therapy in Patients Undergoing Transcatheter Aortic Valve Implantation
Key facts
- Where
- Budapest, HungarySee the site
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults who had a successful TAVI for aortic stenosis. Afterwards they have a new left bundle branch block that lasts, and mildly reduced heart pumping.
- Age
- Over 18 years
- Sex
- All sexes
- Disease stage
- Significant aortic stenosis treated with TAVI without complications. New left bundle branch block wider than 130 ms that still persists at planned discharge (on or after day 5). Heart pumping (EF) between 35% and 55%.
- Earlier treatment
- Successful TAVI implantation without complications. No earlier pacemaker or ICD with more than 20% ventricular pacing.
- Biomarker or test result
- New left bundle branch block wider than 130 ms after TAVI. EF between 35% and 55% on echocardiography at planned discharge.
Main reasons for not taking part
- Right bundle branch block before the trial, or earlier pacemaker/ICD with more than 20% ventricular pacing
- Block progressing before discharge to a point where a pacemaker is needed
- Severe disease of another heart valve (mitral, pulmonary or tricuspid)
- Severe infection or sepsis
- TAVI-related stroke
Read by machine on 12 November 2026.
Where in Hungary
- Semmelweis University - Heart and Vascular CenterBudapest, HungaryContact: Mihály Ruppert, MD, PhDTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Semmelweis University Heart and Vascular Center
- Trial code
- NCT07434193
- Record updated
- 25 February 2026
- Original description
In this prospective, randomized, multicenter, open-label interventional clinical trial, the investigators' aim to test the effect of Cardiac Resynchronization Therapy (CRT) in cases of new-onset and persistent Left Bundle Branch Block (LBBB) occurring in the context of Transcatheter Aortic Valve Implantation (TAVI), in patients with moderately reduced left ventricular systolic function (35% < EF < 55%). The investigators hypothesize that in patients with persistent LBBB developing after TAVI and mildly reduced left ventricular systolic function (35% < EF < 55%), early postoperative CRT implantation favorably influences the process of myocardial reverse remodeling by reducing electromechanical dyssynchrony, thereby decreasing the combined endpoint of heart failure-related hospitalizations and mortality at one year.Read full original descriptionShow less
Biventricular or Left Bundle Branch Pacing to Assess the Effect of Cardiac Resynchronization Therapy in Patients Undergoing Transcatheter Aortic Valve Implantation- the BUDAPEST CRT TAVI Trial
In this prospective, randomized, multicenter, open-label interventional clinical trial, the investigators' aim to test the effect of Cardiac Resynchronization Therapy (CRT) in cases of new-onset and persistent Left Bundle Branch Block (LBBB) occurring in the context of Transcatheter Aortic Valve Implantation (TAVI), in patients with moderately reduced left ventricular systolic function (35% < EF < 55%). The investigators hypothesize that in patients with persistent LBBB developing after TAVI and mildly reduced left ventricular systolic function (35% < EF < 55%), early postoperative CRT implantation favorably influences the process of myocardial reverse remodeling by reducing electromechanical dyssynchrony, thereby decreasing the combined endpoint of heart failure-related hospitalizations and mortality at one year.
Inclusion: Age over 18 years; Successful and complication-free TAVI implantation for significant aortic stenosis; Signed informed consent after detailed patient information; New-onset LBBB wider than 130 ms after TAVI, persisting at the time of planned discharge (assessed postoperatively on or after day 5)(21); Mildly reduced left ventricular systolic function on echocardiography at the planned time of discharge (at the earliest on postoperative day 5), with EF between 35% and 55%.
Exclusion: Pre-existing right bundle branch block, or prior pacemaker/ICD implantation associated with significant (>20%) ventricular pacing; Progression of LBBB during hospitalization to a degree indicating pacemaker implantation (e.g., Mobitz II or third-degree AV block, alternating bundle branch block) before the planned discharge date; Concomitant severe valvular disease of other valves (mitral, pulmonary, or tricuspid); Severe infection and/or septic state; TAVI-associated stroke; More than moderate paravalvular leak of the TAVI valve on postoperative echocardiography; EF < 35% or > 55% on echocardiography performed at the planned time of discharge; GOLD stage IV COPD; Chronic renal failure requiring regular dialysis; Concurrent participation in another clinical trial.