Please assess the completion status of the following clinical trial:

Trial Title: Use of an Antiemetic to Shorten the Length of Labor in Nulliparous Women

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

Eligibility Criteria:
Inclusion Criteria:~* Primigravida~* Singleton pregnancy~* Term gestation i.e. 37- 42 weeks~* Sure reliable dates~* Vertex presentation, occipitoanterior position~* Spontaneous onset of labor~* Regular uterine contractions at every 5 min ,each lasting for 20 sec~* Cervical dilatation of 3-5cm~* With or without rupture of membranes~* No evidence of maternal or fetal distress~Exclusion Criteria:~* Mal-presentations~* Mal-positions~* Multifetal pregnancy~* Cephalopelvic disproportion~* history of cervical surgery or injury~* Hypersensitivity to metoclopramide

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: 35 Years
- Healthy Volunteers: f

Study Arms:
- Metoclopramide (Type: ACTIVE_COMPARATOR): Intravenous injection of 10mg metoclopramide
- Placebo (Type: PLACEBO_COMPARATOR): Intravenous injection of 0.9% sodium chloride

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