Monitoring of Syncopes and/or Sustained Palpitations of Suspected Arrhythmic Origin With External Loop-Recorder (SpiderFLASH)

Inclusion Criteria: * Syncope and/or palpitations events occurred in the last 30 days * Events likely of arrhythmic origin * No conclusive diagnosis established yet * High probability of episodes recurrence (presence of at least one previous event in the last 12 months) * Patient has signed the consent to participate to the study and/or to data treatment Exclusion Criteria: * Inability to understand the purpose of the study or refusal to cooperate * Expected low compliance with the recording technique. * Logistical impossibility to deliver the ELR within 30 days after the index event (or after discharge from ER and/or hospitalization and/or clinic visit) * Already included in other competitor clinical study * Under guardianship * Age less than 18