Please assess the completion status of the following clinical trial:

Trial Title: Perioperative Administration of Pregabalin for Pain After Mastectomy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~1. American Society of Anesthesia physical status class I \& II~2. Age \> 20 and \< 70 years~3. Robot- assisted endoscopic thyroidectomy~Exclusion Criteria:~1. Known or suspected allergy, sensitivity, or contraindication to pregabalin or any of the standardized medications~2. Body mass index ≥ 40 kg/m2~3. History of seizure disorder~4. Current therapy with pregabalin, gabapentin, or any opioid~5. Any other physical or psychiatric condition which may impair their ability to cooperate with post-operative study data collection~6. Insulin-dependent diabetes mellitus~7. Renal insufficiency (estimated glomerular filtration rate (eGFR) \< 60 mL/min/1.73 m2)

- Gender: FEMALE
- Minimum Age: 21 Years
- Maximum Age: 69 Years
- Healthy Volunteers: f

Study Arms:
- Placebo (Type: PLACEBO_COMPARATOR): Patients receive oral Placebo 1 hour prior to surgery, and 12 hours later
- Pregabalin (Type: EXPERIMENTAL): Patients receive oral pregabalin 1 hour prior to surgery, and 12 hours later

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