Please assess the completion status of the following clinical trial:

Trial Title: CPAP Reduces Hypoxemia After Cardiac Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* patients undergoing cardiac surgery on cardiopulmonary bypass~* PaO2 /FiO2 \< 200 after extubation~* extubation time \< 24 h.~Exclusion Criteria:~* patients \< 18 years old~* extracorporeal membrane oxygenation~* severe cardiac dysfunction (FE\<25%)~* mechanical ventilation before the intervention~* severe COPD (patients on oxygen therapy, with a FEV1\< 50%)~* heart or lung transplantation~* lack of consent.

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

Study Arms:
- TREATMENT (Type: EXPERIMENTAL): Helmet CPAP
- CONTROL (Type: ACTIVE_COMPARATOR): Venturi Mask

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