Please assess the completion status of the following clinical trial:

Trial Title: Post Extubation Delirium and End-tidal Sevoflurane Concentration

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

Eligibility Criteria:
Inclusion Criteria:~* Age 2-7 years~* ASA I - II~* Estimated surgery time \< 2 hours~* Sevoflurane induction and maintenance along with caudal block or Axillary Block~Exclusion Criteria:~* Craniofacial anomalies~* Difficult exposure of the vocal cordS~* Obesity~* Asthma~* Invalid caudal block or axillary block

- Gender: ALL
- Minimum Age: 2 Years
- Maximum Age: 7 Years
- Healthy Volunteers: f

Study Arms:
- low concentration (LC) (Type: EXPERIMENTAL): low concentration group
- high concentration (HC) (Type: EXPERIMENTAL): high concentration group

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