Please assess the completion status of the following clinical trial:

Trial Title: An Exploratory Study of Esketamine in Patients After Thoracoscopic Surgery

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

Eligibility Criteria:
Inclusion Criteria:~1. Patients undergoing thoracoscopic surgery are required to use PCIA for analgesia;~2. ASA grade I-III;~3. The patient's age is 18-75 years old; 4、18.5 \< BMI \< 28；~5. Obtain the informed consent of patients and their families;~Exclusion Criteria:~1. Patients with previous history of thoracic surgery or combined history of thoracic trauma;~2. Patients with severe hypertension and poor control;~3. Patients with hyperthyroidism and poor control;~4. Patients at risk of increased intracranial pressure;~5. Patients with mental illness;~6. Patients who are allergic to any drug in the test;~7. Patients who take anti-inflammatory drugs, opioids or related diseases for a long time;~8. Pregnant or lactating patients;

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

Study Arms:
- Esketamine arm (Type: EXPERIMENTAL): Self-controlled intravenous analgesia pump was used for continuous injection, and it was prepared according to sufentanil 1.5ug/ml+ esketamine 0.75ug/ml+16mg ondansetron. After the operation, the analgesic pump was connected, and sufentanil 0.1ug/kg/h+ e sketamine 0.05mg/kg/h was pumped continuously for 24 hours. The continuous infusion of analgesia pump is (kg body weight/15) ml/h. (e.g. 60kg, pump speed 4ml/h, total amount 96ml).
- Sufentanil arm (Type: NO_INTERVENTION): Continuous pumping with self-controlled intravenous analgesia pump. According to sufentanil 1.5ug/ml+16mg ondansetron. At the end of the operation, connect the analgesic pump, and pump it with sufentanil at 0.1ug/kg/h for 24 hours. The continuous infusion of analgesia pump is (kg body weight/15) ml/h. (e.g. 60kg, pump speed 4ml/h, total amount 96ml).

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