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Clinical Trial Summary

The main objective of the study is to demonstrate that prophylactic treatment of patients with asymptomatic frequent (>10%) PVCs is superior to simple follow-up strategy with no therapy to prevent subsequent LV dysfunction at 24 months. The prophylactic treatment is based on drugs ± ablation (ablation can be performed if the PVC burden remain >10% after 2 lines of AAD treatment since the initiation of the study). The primary endpoint will be the development of LV dysfunction (PVC-iCMP) defined as a 15% relative LVEF decrease (and/or a LVEF <50%) within 2 years following randomization, on cardiac magnetic resonance imaging (cMRI) (or transthoracic echocardiography (TTE) when not possible).


Clinical Trial Description

Premature ventricular contractions (PVCs) are frequently encountered in clinical practice, in the setting of underlying heart disease as well as in "normal" hearts. Frequent PVCs have been shown to impact long term prognosis in patients with structurally normal hearts,[1] as well as in documented cardiomyopathy. In both settings, PVCs may cause symptoms and, in rare cases, sudden cardiac death. For about two decades, it has been accepted that frequent PVCs may also induce left ventricular (LV) dysfunction called PVC-induced cardiomyopathy (PVC-iCMP). Indeed, PVC suppression by using drugs or catheter ablation has been associated with full recovery of left ventricular dysfunction.[2-4] De facto, PVC-iCMP diagnosis as well as identification of predictors has always been established retrospectively. Therefore, risk stratification or simply knowing the exact incidence of the disease in exposed patients remain difficult. European and US guidelines recommend to treat symptomatic PVC patients regardless of the burden or their risk profile, as well as "frequent PVCs" associated with LV dysfunction (Experts tend to consider worthwhile treating for burden >10%, which was the lowest burden associated with PVC-iCMP). However, there is no clear recommendation for asymptomatic patients exposed to very frequent PVCs, at risk of developing cardiomyopathy. As no previous studies included such population, expert suggested that these patients should be at least closely followed. Consequently, management of such patients is widely heterogeneous. The hypothesis of this study is that prophylactic suppression of very frequent PVCs (>10%) will prevent or significantly reduce the incidence of PVC-iCMP. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05784051
Study type Interventional
Source Assistance Publique - Hôpitaux de Paris
Contact
Status Not yet recruiting
Phase Phase 4
Start date October 1, 2023
Completion date June 1, 2027

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