Please assess the completion status of the following clinical trial:

Trial Title: Effects of Dexmedetomidine Premedication on Emergence Agitation After Strabismus Surgery in Children

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* aged2-6 yr, with American Society of Anesthesiologists physical status I or II, scheduled to undergo strabismus surgery during general anesthesia~Exclusion Criteria:~* mental disease, neurologic disease, treatment with sedatives, full stomach, or indication for rapid sequence induction.

- Gender: ALL
- Minimum Age: 2 Years
- Maximum Age: 6 Years
- Healthy Volunteers: f

Study Arms:
- Dexmedetomidine group (Type: EXPERIMENTAL): The dexmedetomidine group received intranasal dexmedetomidine 2mcg/kg premedication 45 min and oral saline 30 min before induction of anaesthesia
- Midazolam group (Type: ACTIVE_COMPARATOR): The midazolam group received intranasal saline 45 min and oral midazolam 0.5 mg/kg 30 min before induction of anaesthesia.
- Placebo Group (Type: PLACEBO_COMPARATOR): The Placebo group received intranasal saline premedication 45 min and oral saline 30 min before induction of anaesthesia

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