Creation of a Syncope Channel for Patients Admitted to the Emergency Department for Loss of Consciousness and Not Hospitalized: Etiological Predictivity (Before/After Study)

Inclusion Criteria: * Adults aged 18 and over; * Consultant at the emergency department of the Centre Hospitalier de V ersailles * For a confirmed diagnosis: * of recurrent syncope with low-risk criteria according to ESC 2018 (1,2) Or * of syncope recurrent or not, not fulfilling low-risk or high-risk criteria according to the ESC 2018 definition (1,2). These patients are those with minor high-risk criteria without aggravating circumstances: * With no personal history of loss of consciousness whose clinical features strongly suggest syncope of rhythmic origin; * No structural heart disease or abnormal ECG. * Outpatient (returning home after emergency); * Beneficiary or beneficiary of a social security scheme (excluding AME). Exclusion Criteria: * Etiology of syncope identified as early as the emergency department visit; * High-risk syncope according to ESC 2018 criteria (1,3); * First and only episode of low-risk syncope according to ESC 2018 criteria (1,3); * Syncope of any risk category requiring hospitalization at the discretion of the emergency physician and cardiologist; * Legal protection by guardianship ; * Language barrier or condition incompatible with the patient's understanding or informed adherence to the protocol; * Opposition to the use of their pseudonymized data (for retrospective inclusions); * Patient's refusal to give consent to participate in the study (for prospective inclusions);