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Ripple Mapping Guided Ablation of Ischaemic Ventricular Tachycardia. — RIPPLE-VT  

Ischemic Heart Disease Clinical Trial

Official title:
Ripple Mapping Guided Ablation of Ischaemic Ventricular Tachycardia: A Multi-centre Prospective Clinical Trial.

Clinical Trial Summary

The Ripple VT-1 Study is a prospective clinical trial that aims to investigate if catheter ablation of ventricular tachycardia in patients with ischaemic heart disease can be effectively performed using Ripple Mapping.

Clinical Trial Description

Patients who have ischaemic heart disease and are at sufficient risk of, or have suffered, ventricular tachycardia may receive implantable cardioverter defibrillator (ICD) devices. ICD devices provide life-saving shocks to terminate ventricular tachycardia. There is however substantial evidence that correlates each life-saving shock with worsening prognosis. Catheter ablation is a procedure that can treat the cause of ischaemic ventricular tachycardia (VT). Most catheter ablation procedures for ischaemic VT are performed in normal rhythm, with an end-point of arrhythmic substrate modification. Arrhythmic substrate modification refers to the process by which abnormal electrical activity in cardiac scar tissue (from ischaemic heart disease) is identified and treated by ablation. Substrate modification catheter ablation procedures for ischaemic VT have been demonstrated to reduce ICD shocks and VT episodes in randomised trials compared to medications. However, ablation procedure outcomes are still imperfect with a recurrence rate of 50-60%. Ripple Mapping is a method of mapping the hearts electrical signals, that may allow better identification of the abnormal activity within scar and so improve recurrence rates following ablation. Patients referred for ablation of ischaemic VT, who have an ICD, will undergo their procedure with Ripple Mapping and subsequently followed up over a year, at 3 monthly intervals. The main assessed outcome will be ICD or VT events over a year. This will be compared to the number of ICD or VT events the year prior to ablation. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03997201
Study type Interventional
Source Imperial College Healthcare NHS Trust
Contact
Status Completed
Phase N/A
Start date April 18, 2019
Completion date June 30, 2022
View Details
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