Please assess the completion status of the following clinical trial:

Trial Title: Sildenafil Effects on Pulmonary Haemodynamics and Gas Exchange in Chronic Obstructive Pulmonary Disease (COPD)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* COPD (FEV1/FVC\<0.7)~* Age 40-75~* Pulmonary hypertension (Vmax TI\>=2.8m/sec)~Exclusion Criteria:~* Treatment with CYP3A4 inhibitors, nitrates, PDE-5 inhibitors~* Coronary disease~* Ischemic optical neuritis

- Gender: ALL
- Minimum Age: 40 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- 1 (Type: ACTIVE_COMPARATOR): Sildenafil 20mg
- 2 (Type: ACTIVE_COMPARATOR): Sildenafil 40mg

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