Please assess the completion status of the following clinical trial:

Trial Title: DPNB for Prevention of CRDB

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Informed consent signed~* Male adult patient, aged 18\~50 years old, ASA I\~III~* Surgery under general anesthesia~Exclusion Criteria:~* Bladder dysfunction, such as overactive bladder~* A history of bladder outflow obstruction~* Prostate disease, such as benign prostate hyperplasia, etc.~* Disturbance of central nervous system

- Gender: MALE
- Minimum Age: 18 Years
- Maximum Age: 50 Years
- Healthy Volunteers: f

Study Arms:
- DPNB (Type: EXPERIMENTAL): Patients receive DPNB 30min before extubation at the end of operation.
- Tramadol (Type: ACTIVE_COMPARATOR): Patients receive intravenous tramadol 1.5mg/kg 30min before extubation at the end of operation.

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