Interest of Cardiac Coherence in the Prevention of Chronic Post-traumatic Stress Disorder: Pilot Study

Each patient will be teached how to use cardiac coherence with a trained practitioner at the inclusion visit. A respiratory guide on smartphone will be given to the patient aswell as a diary in order to keep tracks of the patient's compliance to this program.

Inclusion criteria

• patients seen at medico-psychological emergency cell
• patients with an acute stress disorder, diagnosed by DSM-5
• patients who have experienced a potentially traumatic event for the last 3-15 days (vctim or witness)
• patients able to read and write in French language
• person affiliated or beneficiary of a social security scheme.
• person who agrees to participate in the study

Exclusion criteria

• patients with respiratory pathology not allowing cardiac coherence training
• patients currently practicing a regular respiratory control technique or within the last 6 months
• patients taking beta-blocker, betamimetic, anti-arrhythmic, opioid, antidepressant
• patients with a pacemaker or suffering from severe cardiac illness
• patients with non-stabilized psychiatric disorder at inclusion
• patient taking benzodiazepine unable to wean off in the week following the inclusion
• patients with addiction
• patients with a cognitive deficit
• patients under guardianship or curatorship, under judicial supervision