Please assess the completion status of the following clinical trial:

Trial Title: The Assessment of Oxidative Stress Markers and the Development of Atrial Fibrillation After Cardiac Surgery

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Age ≥18 years~* Sinus rhythm at the time of enrollment as documented by ECG, telemetry, or Holter monitoring~* Scheduled for an open heart surgery~* Able to provide informed consent~Exclusion Criteria:~* Systemic inflammatory diseases (e.g., collagen vascular diseases, infections)~* Malignant neoplasms~* Hyperthyroidism~* Uncontrolled hypertension (blood pressure \> 180/100 at rest) on medications~* An illness that might result in death within 1 year~* Implanted devices for designed for active management of atrial arrhythmias by pacing or defibrillation~* Current illicit drug use~* Current ethanol abuse~* Presence of paroxysmal, persistent, or permanent atrial fibrillation at the time of enrollment

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

Study Arms:
- Post operative atrial fibrillation (Type: None): To evaluate the ability of oxidative stress markers to predict postoperative atrial fibrillation in subjects undergoing cardiac surgery.

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