Please assess the completion status of the following clinical trial:

Trial Title: Effect of Dexmedetomidine on Recovery Profiles of Elderly Patients

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: None
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* ASA I-II~* Age \> 65~* Elective surgery~Exclusion Criteria:~* Patients with severe heart disease with New York Heart Association class \> III~* Patients with severe arrhythmia~* Patients with uncontrolled hypertension or hypotension~* Patients with hemodynamic unstably~* Patients with hypersensitivity with drugs~* Patients with cognitive deficiency, dementia, or delirium~* Patients with hepatic or renal compromise~* Patients with infective disease

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Group 1 (Type: PLACEBO_COMPARATOR): General anesthesia with sevoflurane. Infusion of normal saline during surgery. Administer rocuronium 0.8 mg/kg for induction.
- Group 2 (Type: PLACEBO_COMPARATOR): General anesthesia with propofol and remifentanil. (Total intravenous anesthesia) Infusion of normal saline during surgery. Administer rocuronium 0.8 mg/kg for induction.
- Group 3 (Type: EXPERIMENTAL): General anesthesia with sevoflurane. Infusion of dexmedetomidine (0.4 ug/kg/hr) during anesthesia. Administer rocuronium 0.8 mg/kg for induction.
- Group 4 (Type: EXPERIMENTAL): General anesthesia with propofol and remifentanil. (Total intravenous anesthesia) Infusion of dexmedetomidine (0.4 ug/kg/hr) during surgery. Administer rocuronium 0.8 mg/kg for induction.

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