Please assess the completion status of the following clinical trial:

Trial Title: Epidural Levobupivacaine-sufentanil Versus Epidural Levobupivacaine and Intravenous Ketamine

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

Eligibility Criteria:
Inclusion Criteria:~* age between 18 and 75 yrs~* class ASA I, II or III~* lung surgery~Exclusion Criteria:~* Contra-indication to the achievement of epidural analgesia~* Preoperative chronic pain,~* Contra-indication to ketamine~* Hypersensitivity to ketamine or any excipients~* Uncontrolled hypertension,~* Stroke~* Heart failure~* Hepatic porphyria~* Contra-indication to sufentanil~* Hypersensitivity to sufentanil, opioids or any excipients~* Treatment with an opioid agonist-antagonist,~* Contra-indication to levobupivacaine~* Hypersensitivity to levobupivacaine, local anesthetics of the amide or any excipients~* Hypotension, shock

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

Study Arms:
- iv Ketamine (Type: EXPERIMENTAL): Epidural infusion of levobupivacaine and saline (placebo for sufentanil)and iv infusion of ketamine Up to the third postoperative day (6 PM)
- Sufentanil (Type: ACTIVE_COMPARATOR): Epidural infusion of levobupivacaine (1,25 mg/ml) and sufentanil(1 ml = 50 µg diluted in the 200 ml bag of levobupivacaine) IV infusion of saline (placebo for ketamine)

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