Cardiac resynchronization therapy for adults with congenital heart disease and systemic right ventricle

Cardiac Resynchronization Therapy in Adult Congenital Heart Disease With Systemic Right Ventricle: A Cross-Over Trial

Not applicable Interventional Assistance Publique - Hôpitaux de Paris · NCT05524324

This study is testing if a special heart treatment can help adults with congenital heart disease and a systemic right ventricle feel better and improve their quality of life.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment40 (estimated)
Ages18 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations13 sites (Caen and 12 other locations)
Trial IDNCT05524324 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of cardiac resynchronization therapy (CRT) in improving functional capacity and quality of life for adult patients with congenital heart disease who have a systemic right ventricle. It is a double-blind randomized cross-over trial involving 40 participants, each of whom will undergo both CRT ON (biventricular pacing) and CRT OFF (inactive or univentricular pacing) interventions over a follow-up period of 6 months. The study aims to provide evidence on whether CRT can be a viable treatment option for this specific patient population, potentially avoiding unnecessary procedures if found ineffective.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with systemic right ventricle and specific indications for CRT.

Not a fit: Patients who are pregnant, breastfeeding, or have had recent cardiac surgery may not benefit from this study.

Why it matters

Potential benefit: If successful, this therapy could significantly enhance the quality of life and functional capacity for patients with systemic right ventricle.

How similar studies have performed: While this approach is novel for this specific patient group, similar studies in other populations have shown promising results with CRT.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* systemic right ventricle (SRV),
* CRT-P or CRT-D device implanted for at least 1 month,
* Age ≥18 years old,
* One of the two following CRT indications:

  * NYHA II-IV, right ventricular ejection fraction ≤ 35% and spontaneous QRS duration ≥ 150 ms Or
  * NYHAI-IV, atrioventricular conduction disorders with ventricular pacing \> 40% (regardless right ventricular ejection fraction).
* Affiliation to a french social security system (beneficiary or legal)
* Informed and signed consent

Exclusion Criteria:

* Pregnancy or breastfeeding
* Women of childbearing potential who do not have a negative pregnancy test and do not use one of the following methods of birth control: hormonal contraception or intrauterine device or bilateral tubal occlusion
* Patient benefiting from a measure of legal protection (guardianship, curatorship, under judicial safeguard, activated future protection mandate and family authorization),
* Cardiac surgery during the last 3 months or planned during the next 6 months,
* Percutaneous structural cardiac intervention planned during the next 6 months,
* Persistent atrial arrhythmia with catheter ablation planned during the next 6 months,
* Acute congestive heart failure,
* Dysfunction of at least one CRT device lead that compromise biventricular pacing,
* Patient on AME
* Current participation in another interventional clinical study or being in the exclusion period at the end of a previous study.

Where this trial is running

Caen and 12 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Congenital Heart DiseaseSystemic Right VentricleCongenitally Corrected Transposition of the Great ArteriesTransposition of Great VesselsHeart Failure Congenitalcardiac resynchronization therapycongenital heart diseasesystemic right ventricle
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.