Predictive Value of Pre-TAVI Infrahissian Conduction Time in the Occurrence of Complete Atrioventricular Block

Study Overview
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Brief Summary
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The purpose of the study is implantation of a Pacemaker at 30 days for occurrence of a high-grade conduction disorder per- or post-procedure (yes/no)

Detailed Description
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The main objective is to assess the predictive value of the pre-TAVI infrahelic conduction time interval (infraheal conduction time measured before percutaneous aortic valve implantation) on the risk of Pacemaker implantation at 30 days post-TAVI, in patients with right bundle branch block prior to surgery. The aim of the study is to identify a pre-interventional marker of the risk of rhythmological complication after the TAVI procedure (Transcatheter Aortic Valve Implantation), in order to better anticipate it. This is an interventional, prospective, longitudinal (follow-up: 12 months), multicenter (4 centers) study.

Official Title
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Predictive Value of Pre-Transcatheter Aortic Valve Implantation (TAVI) Infrahissian Conduction Time in the Occurrence of Complete Atrioventricular Block in Patients With Preoperative Right Bundle Branch Block

Conditions
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Aortic Stenosis, Severe

Intervention / Treatment
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* Procedure: Transcatheter Aortic Valve Implantation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient suffering from severe aortic stenosis, eligible for a TAVI procedure (Transcatheter Aortic Valve Implantation) ; Patient presenting with complete right bundle branch block during the pre-TAVI electrocardiogram, with QRS interval ≥ 120 ms (depolarization of the ventricles); Patient able to understand the information related to the study, to read the information leaflet and agreeing to participate in the study. ; Patient having signed a consent. Exclusion Criteria: Contraindication to Transcatheter Aortic Valve Implantation ; Patient under guardianship or curatorship, or under a regime of deprivation of liberty; Patient participating in another clinical trial, or in a period of exclusion from another clinical trial; Patient not benefiting from a social security scheme.

Ages Eligible for Study
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Minimum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: severe aortic stenosis with complete right bundle branch block<br>patients with aortic stenosis undergoing a Transcatheter Aortic Valve Implantation procedure | Procedure: Transcatheter Aortic Valve Implantation<br>* The TAVI procedure is performed transfemorally under local anesthesia most often, or more rarely under general anesthesia via the subclavian or transaortic route. Identification is carried out under fluoroscopy in the cardiac catheterization room. The crossing of the aortic valve allows the establishment of a guide at the bottom of the left ventricle. Aortic valve predilation can be performed. The tightness of the device is checked by an aortography. Sometimes, post-dilation of the implanted bioprosthesis proves necessary, particularly in the event of under-deployment or significant para-prosthetic leakage. The duration of the intervention is approximately 1 hour.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Implantation of a Pacemaker at 30 days | Implantation of a Pacemaker at 30 days for occurrence of a high-grade conduction disorder per- or post-procedure (yes/no) | 30 days |