Please assess the completion status of the following clinical trial:

Trial Title: Comparison of Ondansetron, Metoclopramide and Promethazine for the Treatment of Nausea and Vomiting in the Adult ED

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* All patients age 18 or older who present to the ED with a complaint requiring antiemetic treatment who do not meet the exclusion criteria.~Exclusion Criteria:~* Patients less than 18 years of age~* Unstable patients with SBP \< 90~* Patients with a stated or documented allergy to any of the study medications~* Patients whose nausea rating if \< 40 on the pretreatment VAS scale~* Patients who have received a commonly accepted antiemetic within the previous 24 hours~* Patients unwilling or unable to complete the assessment tool before and 30 minutes after study drug dosing

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

Study Arms:
- Ondansetron (Type: ACTIVE_COMPARATOR): Ondansetron 4 mg intravenous administration
- Metoclopramide (Type: ACTIVE_COMPARATOR): Metoclopramide 10 mg intravenous administration
- Promethazine (Type: ACTIVE_COMPARATOR): Promethazine 10 mg intravenous administration
- Saline Placebo (Type: PLACEBO_COMPARATOR): Volume-matched saline placebo

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