Please assess the completion status of the following clinical trial:

Trial Title: Preoperative Single-dose Steroid Application for the Treatment of Nausea and Vomiting After Thyroid Surgery

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

Eligibility Criteria:
Inclusion Criteria:~* Age \> 18~* Planned partial or total thyroidectomy~Exclusion Criteria:~* History of adverse effects to dexamethasone or propyleneglycol or di-natrium-EDTA~* Patients with chronic pain~* Necessity for opioids-application in the postoperative course~* Not possible administration of a cervical block (0.5% bupivacaine at a dose of 20ml)~* Patients with Diabetes mellitus~* Pregnancy (test in young women)~* Glaucoma~* Patients who received antiemetic therapy within 48h before surgery~* Patients with acute pain requiring painkillers others than paracetamol or more than single dose NSAR treatment within 48h before surgery~* Use of psychotropic drugs~* Incompliant patients~* Preoperatively high suspicion of malignancy~* Re-operations

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Dexamethasone injection (Type: ACTIVE_COMPARATOR): Administration of 8mg(2ml) intravenous Dexamethasone (Mephameson®)
- Placebo (NaCl 0.9%) (Type: PLACEBO_COMPARATOR): None

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