Please assess the completion status of the following clinical trial:

Trial Title: Severe Head Trauma: Coagulation and CT-Scan Aggravation.

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: RETROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Adults~* Patients informed and did not object to the collection of their medical data for the study~* Patient admitted in Trauma center between January 2016 and December 2018 severe head injury defined by a Glasgow Coma Scale (GCS) \< 9 AND/OR Abnormalities on the first brain CT-scan with pathological transcranial Doppler (Vd \< 25 cm/s and IP \> 1.25)~Exclusion Criteria:~* Abbreviated Injury Score (AIS) head and neck ≤ 3 AND/OR AIS out of head and neck \> 3~* Taking drugs that interfere with hemostasis, such as anticoagulant or antiplatelet antiaggregants in preventive or curative doses;~* Patients under guardianship~* Patients still alive at the time of data collection AND opposed to the collection of their data

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Based on this trial design, predict the completion outcome and termination type (if applicable).