NCT05513755

Cardioneuroablation in Reflex Syncope (CARDIOSYRE Trial)

Randomized Trial of Cardioneuroablation in Reflex Syncope Treatment (CARDIOSYE Trial)

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 92 (estimated)
• Sponsor: Fundación de investigación HM · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

Background: Reflex syncope is a disease of benign etiology but in severe cases it can be disabling and it carries a risk of severe trauma. Today, there is no proven etiological treatment and only palliative treatments are used, namely a change in hygienic and dietary habits, certain drugs or, in the most severe cases, the implantation of a pacemaker. Cardioneuroablation is a novel technique that acts by ablating the parasympathetic ganglia located on the external walls of the atria. Several prospective series with promising results have been published, but there are no randomized studies that have validated its efficacy compared to conventional treatment. Methods: The CARDIOSYRE study is a multicenter, randomized, single-blinded study of patients with reflex syncope. The aim is to recruit, between June 2022 and June 2025, 92 patients with reflex cardioinhibitory syncope in 15 centers and randomize them (1:1 ratio) to two treatment groups: 1) cardioneuroablation intervention; 2) conventional treatment (control group). The primary end-point will be the time to the first syncope and the secondary end-point will be the total incidence of syncope after one year of follow-up. At least 20 recurrences of syncope are expected during a 1-year follow-up. A relative risk of 0.3 and a statistical power of 80% are assumed. The follow-up will be carried out at 3, 6 and 12 months. Cox models will be used to estimate adjusted Hazard ratios.

Conditions

• Reflex Syncope

Interventions

Type	Name	Description
PROCEDURE	cardioneuroablation	Endocardical radiofrequency ablation of vagal ganglia located close to pulmonary veins antra and interatrial septum.

Timeline

• Start date: 2022-06-30
• Primary completion: 2025-06-30
• Completion: 2025-12-31
• First posted: 2022-08-24
• Last updated: 2022-08-26

Locations

1 site across 1 country: Spain