Inclusion Criteria:  Patient aged 22 or older, able and willing to participate in the study Patient admitted to hospital for ablation, cardioversion or cardiac electrophysiological exploration or who comes for regular rhythmology consultations or hospitalized in cardiology department Patient who has read the information note and has given his or her consent before any procedure related to the study Patient affiliated to social security  Exclusion Criteria:  Pregnant or breastfeeding women Patient with a pacemaker, implantable defibrillator or cardiac resynchronisation therapy device. Subject related to the investigator or any other staff member directly involved in the conduct of the study Patient incapable of giving consent, minor or adult patient protected by law