Please assess the completion status of the following clinical trial:

Trial Title: Transversus Abdominis Plane Block on Stress Response

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

Eligibility Criteria:
Inclusion Criteria:~* Consent~* ASA 1-3~* No contraindication to epidural or ropivacaine~* First time surgery for current conditions~* Not on chronic pain medications or sedative~Exclusion Criteria:~* The subject has a known or suspected allergy to opioid analgesics or ropivacaine~* Emergency patients~* The subject has know central nervous system disease or neurological impairment~* The subject has preoperative infection, and a history of immune and endocrine system disease, chemotherapy, or blood transfusion.

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

Study Arms:
- Transversus abdominis plane block (Type: EXPERIMENTAL): The TAP group receives ultrasound-guided TAP block under bilateral costal margin with multiple injections of 40ml 0.375% ropivacaine after the induction of general anesthesia.
- Epidural anesthesia (Type: ACTIVE_COMPARATOR): The Epidural group receives epidural block (T8-9) 2 mL of 1.6% lidocaine as a test dose and continous infusion of 0.375% ropivacaine(5 mL/h) during the surgery.
- Control (Type: PLACEBO_COMPARATOR): The Control group receives standard IV-inhaled general anesthesia.

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