During an attempted hanging, patients present severe neurological distress that can lead to major neuropsychiatric sequelae. These sequelae are notably due to significant cerebral edema related to hanging. Hyperbaric Oxygen therapy is known to reduce cerebral edema and improve cerebral perfusion. The main objective of the study is to evaluate in patients who have attempted hanging without presenting cardio-respiratory arrest, the effect of one Hyperbaric Oxygen therapy session in addition to standard intensive care management on a potential reduction in short-term neurological sequelae. Patients will benefit from either standard management or standard management associated with one Hyperbaric Oxygen therapy session

Inclusion Criteria:

Patients who present, following an attempted hanging, neurological distress defined by the presence of one or more of the following criteria:

• Glasgow score < 13/15
• Confusional syndrome
• Psychomotor agitation Who most of the time require optimal neuroprotection by sedation and invasive mechanical ventilation for the purpose of protecting the airways.
• Patient aged over 18 years,
• Suicide attempt by hanging without cardiocirculatory arrest,
• Patient insured socially and able to understand the information provided

Exclusion Criteria:

• Response time exceeded by > 6 hours from the hanging
• Attempted hanging with immediate return to normal consciousness
• Refusal of consent from the family or trusted person at the time of inclusion in the study,
• Patients and/or families unable to understand the information provided