Ketamine Low dOse Evaluation on Morphine Consumption in Traumatic Patient

Exclusion Criteria

• •Patients with an indication for deep sedation (intracranial hypertension or acute respiratory distress syndrome).
• •Patient in whom the infusion could not be started within the first 6 hours of initial treatment.
• •Patient whose state of consciousness is incompatible with understanding the protocol.
• •Patient with chronic unbalanced arterial hypertension.
• •Patient with severe heart failure.
• •Patient with a BMI\> 35 kg / m² or a weight of more than 120 kg.
• •Patient with chronic analgesic consumption defined by consumption of opioid derivatives for more than a week for an intercurrent illness.
• •Presence of a history of chronic pain.
• •Presence of a history of epilepsy.
• •Presence of a history of psychosis or drug addiction.
• •Presence of a history of stroke.
• •Patients with an allergy to the molecule or excipients composing ketamine
• •Patients with an allergy to the molecule or to the excipients making up sufentanil or paracetamol.
• •Pregnant or breastfeeding woman.
• •Patient not understanding French.
• •Protected adult patient (under guardianship, curatorship or legal protection).