Please assess the completion status of the following clinical trial:

Trial Title: Type 2 Diabetes and Ambulatory Surgery Patients

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

Eligibility Criteria:
Inclusion Criteria:~* Men and women 18-80 years old~* Established diagnosis of type 2 diabetes mellitus~* Undergoing ambulatory surgery.~* Receiving OHA treatment for diabetes .~Exclusion Criteria:~* Treatment of insulin monotherapy~* Treatment with combination of oral hypoglycemic agents such as Thiazolidinediones-Repaglimide (Prandin), Rosiglitazone (Avandia), Pioglitazone (Actos).~* Renal Insufficiency with Serum Creatinine \> 2mg/dl~* Decompensated congestive heart failure decompensated congestive heart failure

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Oral hypoglycemic agent continue (Type: EXPERIMENTAL): Metformin continue on the day of surgery
- Oral hypoglycemic agent discontinue (Type: ACTIVE_COMPARATOR): Metformin discontinue on the day of surgery

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