Please assess the completion status of the following clinical trial:

Trial Title: Prophylactic Pulmonary Vein Isolation Study

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

Eligibility Criteria:
Inclusion Criteria:~* Indication for open-heart surgery: Mitral valve repair or replacement, evidence of a dilated left atrium~Exclusion Criteria:~* History of Atrial Fibrillation~* Need for emergent cardiac surgery~* Previous cardiac surgery~* Preoperative need for an intraaortic balloon pump or intravenous inotropes~* Current diagnosis of active endocarditis~* Mental impairment/or experience other conditions which may not allow subject to understand nature~* Significance and scope of study~* Pregnancy

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

Study Arms:
- 1 (Type: OTHER): The treatment group will undergo operation for mitral valve disease with an additional procedure called Pulmonary Vein Isolation.
- 2 (Type: NO_INTERVENTION): The control group of patients will undergo operation for mitral valve disease without the additional Pulmonary Vein Isolation

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