The study is a multi-site cluster randomized cross-over trial with two comparative groups. In each site, the recruitment period span over a period of 10 days (5 days for control and 5 days for intervention), The control period is a period during which no psychologist is available. ER cares will be provided as usual. The intervention period is a period during which trained psychologists are available in the ER and will provide a short early 1-hour R-TEP EMDR intervention for patients selected with high risk of PCLS. Patient's selection will be conducted using a score developed in previous studies. When no high-risk patient is identified, psychologist could assess other patients and treat them if judged necessary. In this context, they could provide either a R-TEP EMDR or short intervention such as reassurance according to therapist assessment. Otherwise, ER cares will be provided as usual.
In either intervention or control period, all consecutive patients will be proposed to participate in the study that consists in:
(i) completing an inclusion questionnaire to describe reasons for ER attendance, current stress level and preexisting health and symptoms and, in the intervention group, to assess PCLS risk level; (ii) being contacted 4 months later to assess PTSD (using the PCL-5 checklist) and PCLS (using Rivermead criteria).
The national health insurance ID will be collected in the inclusion questionnaire and conserve until it can be used, namely after a specific authorization from Commission Nationale Informatique et Liberté (CNIL). This will allow to compare health care consumption levels in the two groups, as recorded in the national insurance system database (SNIIR-AM).
