Please assess the completion status of the following clinical trial:

Trial Title: Inhaled Sodium Nitrite as an Antimicrobial for Cystic Fibrosis

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE1/PHASE2
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Cystic Fibrosis as documented by clinical features, and documentation of a positive sweat test or two disease causing mutation of the CF gene.~Exclusion Criteria:~* use of supplemental oxygen, FEV1 \< 40% predicted, inability to discontinue inhaled antibiotics for 4 weeks,~* hospitalization within 4 weeks prior to enrollment,~* change in maintenance CF therapies within 4 weeks of enrollment,~* severe anemia, significant chronic liver disease, severe pulmonary hypertension, prior organ transplantation

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

Study Arms:
- sodium nitrite (Type: EXPERIMENTAL): Inhalation of 46 or 80 mg of sodium nitrite twice daily for four weeks

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