Please assess the completion status of the following clinical trial:

Trial Title: Dexametasone Versus Dexametasone Plus Dexmedetomidine in Nerve Blocks

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

Eligibility Criteria:
Inclusion Criteria:~* American Society of Anesthesiologists classification 1-3~* Body mass index between 20 and 35~Exclusion Criteria:~* Adults who are unable to give their own consent~* Pre-existing neuropathy (assessed by history and physical examination)~* Coagulopathy (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. platelets ≤ 100, International Normalized Ratio ≥ 1.4 or prothrombin time ≥ 50)~* Renal failure (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. creatinine ≥ 100)~* Hepatic failure (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. transaminases ≥ 100)~* Allergy to local anesthetics (LAs)~* Pregnancy~* Prior surgery in the infraclavicular region~* Chronic pain syndromes requiring opioid intake at home

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

Study Arms:
- Perineural dexamethasone (Type: ACTIVE_COMPARATOR): Addition of dexamethasone 2mg to local anesthetics in infraclavicular brachial plexus block
- Perineural dexamethasone plus dexmedetomidine (Type: EXPERIMENTAL): Addition of dexamethasone plus dexmedetomidine to local anesthetics in infraclavicular brachial plexus block

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