Please assess the completion status of the following clinical trial:

Trial Title: Evaluation of Oxygen Therapy Delivery Systems in Hypoxemic Acute Respiratory Failure

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Patient hospitalized in the intensive care unit of Nantes University Hospital~* Signed informed consent~* Patient with not hypercapnic acute hypoxemic respiratory failure~* Immunocompetent and immunodeficient patient~Exclusion Criteria:~* Age \< 18 years~* Pregnancy~* Contra-indication to non invasive ventilation~* Allergy to xylocaine~* Coagulation troubles~* Tracheotomized patient~* Urgent indication to intubation~* Hypercapnic acute respiratory failure~* Acute pulmonary edema~* Face or nose malformation

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

Study Arms:
- VNI/Optiflow, Immunodeficient patients (Type: EXPERIMENTAL): VNI = non invasive ventilation
- Optiflow/VNI, Immunodeficient patients (Type: EXPERIMENTAL): VNI = non invasive ventilation
- Ospal/Optiflow, Immunocompetent patients (Type: EXPERIMENTAL): None
- Optiflow/Ospal, Immunocompetent patients (Type: EXPERIMENTAL): None

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