Please assess the completion status of the following clinical trial:

Trial Title: Study of Sildenafil in Advanced Heart Failure.

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~Age \>18 years Ejection fraction \<40% Heart failure limited by fatigue and shortness of breath Pulmonary artery hypertension~Exclusion Criteria:~Patients taking the following medications: nitroglycerine pill/patch/paste, isordil, Imdur, antifungal agents and certain antidepressants.~Patients with a history of optic neuropathy or unexplained visual impairment. Patients with anemia.~-

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

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