Please assess the completion status of the following clinical trial:

Trial Title: Minimum Effective Volume of Local Anesthetic Using Ultrasound for Brachial Plexus Block

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE2
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Patients receiving interscalene brachial plexus block for shoulder surgery~* Age between 21 and 65 years~* ASA physical status I/II~* Body mass index \< 35 kg/m2~Exclusion Criteria:~* Chronic obstructive pulmonary disease~* Psychiatric history~* Allergy to bupivacaine~* Infection in the site of block~* Coagulation disorders

- Gender: ALL
- Minimum Age: 21 Years
- Maximum Age: 65 Years
- Healthy Volunteers: t

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