Please assess the completion status of the following clinical trial:

Trial Title: Endothelin Blockade in Patients With Single Ventricle Physiology

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

Eligibility Criteria:
Inclusion Criteria:~* At least 12 years of age~* Single ventricle congenital heart disease~* Require cardiac magnetic resonance imaging (MRI) for clinical purposes.~Exclusion Criteria:~* \< 12 years of age~* Pregnancy or women who may become pregnant (sexually active and unwilling to use birth control)~* Patients taking cyclosporin or glyburide~* Patients with baseline liver dysfunction (aspartate aminotransferase or alanine aminotransferase \> 3 times upper limit of normal)~* Contraindications to MRI (including pacemakers)~* Use of Bosentan within one month prior to enrollment

- Gender: ALL
- Minimum Age: 12 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Bosentan (Type: EXPERIMENTAL): Bosentan

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