Evaluation of Non-invasive Measurement of Electrophysiological "HV" Interval Using a High-density and High-fidelity Signal Averaging ECG Device

His-Ventricle (HV) measurement is only obtained invasively using transvenous catheters. This kind of procedure is routinely performed but some risks of complication exist. HV interval prolongation is correlated with increased risk of occurrence of complete atrioventricular block which could lead to syncope or cardiac sudden death. A new non invasive, high density and high fidelity system (BioSemi, BioSemi B.V., Amsterdam, Netherlands) can theorically collect such electrophysiological signal using a signal averaging acquisition method. We want to assess the possibility of non invasive HV interval measurement using this new device.