Please assess the completion status of the following clinical trial:

Trial Title: Treatment of Sleep Related Breathing Disorders in Patients With Pulmonary Hypertension

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2
- Number of Arms: 5.0

Eligibility Criteria:
Inclusion criteria:~* percapillary pulmonary hypertension diagnosed by right heart catheterisation -- stable therapy and clinical condition for at least 4 weeks~* sleep disordered breathing with apnea/hypopnea index \> 10 events/h and/or median nocturnal oxygen saturation \<90%~Exclusion criteria:~* Pregnancy~* severe daytime hypoxemia (PaO2 \< 7.2 kPA)~* patients with predominantly obstructive sleep apnea.

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- acetazolamide (Type: EXPERIMENTAL): 1 week therapy, cross-over design
- Placebo tablet (Type: PLACEBO_COMPARATOR): One week, cross-over design
- supplemental oxygen during nights (Type: EXPERIMENTAL): One week, cross-over design
- Non-invasive ventilation (Type: EXPERIMENTAL): One week, cross-over design
- room air (Type: SHAM_COMPARATOR): room air applied via sham-oxygen-concentrator

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