Study of Heart Electrical Activity Using High Density 128-Lead ECG Compared to Standard 12-Lead ECG in Patients with Ventricular Arrhythmias

What this Trial Is About

Researchers are evaluating a new method to record the hearts electrical activity using a high-density electrocardiogram HD ECG with 128 electrodes placed on the body surface. This method aims to capture more detailed cardiac signals compared to the conventional 12-lead ECG, which measures electrical activity from fewer locations and may miss signals from certain areas. The study focuses on patients with ventricular arrhythmias or related heart conditions to see if HD ECG provides additional clinical information. The study involves two types of ECG recordings done simultaneously the standard 12-lead ECG and the experimental HD ECG device. The HD ECG uses 128 skin electrodes arranged in strips, prepared with adhesive tape and conductive gel, recording for 10 to 30 minutes. The conventional 12-lead ECG is derived from specific electrodes within the HD ECG setup, plus four limb electrodes for frontal leads. Participants include those with documented or suspected severe ventricular arrhythmias or those undergoing preventive ventricular defibrillator implantation. Participants will undergo both ECG recordings on the same day, during which researchers will identify electrical criteria such as amplitude, timing, duration, and anatomical locations of cardiac activity using the HD ECG. The study measures these outcomes to assess the sensitivity of the HD ECG method. The trial is non-blinded and conducted at Bordeaux University Hospital, with patient safety monitored throughout the recording process. The total participation involves one study visit for the ECG assessments.

Evaluation of Electrocardiographic Measurements by High Density Electrode ECG