Please assess the completion status of the following clinical trial:

Trial Title: Effects of Nocturnal Nasal Oxygen on Biomarkers in Sleep Apnea Patients With Heart 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: 2.0

Eligibility Criteria:
Inclusion Criteria:~* RDI \> 15~* Symptomatic Heart failure~* Oxygen saturation \< 88% during apnea~* Not currently be on nocturnal oxygen therapy, CPAP, or other PAP therapy~Exclusion Criteria:~* Hypoxemia requiring oxygen supplementation~* serum creatinine \> 2.5 or on chronic dialysis~* blood pressure \> 160~* pregnant~* chronic physical disability that would prevent subjects from participating in any aspect of the trial

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

Study Arms:
- Nasal oxygen (Type: ACTIVE_COMPARATOR): Nocturnal nasal oxygen
- No nasal oxygen (Type: PLACEBO_COMPARATOR): None

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