Please assess the completion status of the following clinical trial:

Trial Title: Ultrasound-guided Axillary Plexus Block - Dose Reduction of Prilocaine

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* elective surgery on the distal forearm or the hand~* adult outpatients, age 18-75 years old~* ASA-risk groups I-II (American Society of Anesthesiologists)~* Body Mass Index 17-35~* informed consent~Exclusion Criteria:~* severe coagulopathy~* local or systemic inflammatory response~* ASA-risk groups ≥ Grad III~* severe anemia~* heart failure~* manifest shock~* other drugs with influence on methaemoglobinemia (nitrates, sulfonamides etc.)~* domestic care after surgery not ensured~* drug allergy : local anesthetics~* severe polyneuropathy~* pregnancy, lactation period~* participation in other studies~* non-cooperative patients~* addiction to drugs or alcohol

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- group A : 40ml Prilocaine 1% (Type: ACTIVE_COMPARATOR): 40 outpatients : 40ml Prilocaine 1% were administered for axillary plexus block
- group B : 30ml Prilocaine 1% (Type: ACTIVE_COMPARATOR): 40 outpatients : 30ml prilocaine 1% were administered for axillary plexus block
- group C : 20ml Prilocaine 1% (Type: ACTIVE_COMPARATOR): 40 outpatients : 20ml prilocaine 1% were administered for axillary plexus block

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