Please assess the completion status of the following clinical trial:

Trial Title: Prediction of Delivery With Transperineal Ultrasound in Women With Prolonged Labour. Multicentre Study

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Primiparous women with single pregnancies and gestation age \> 37 weeks and prolonged first stage of labor~Exclusion Criteria:~* High risk pregnancies,~* premature deliveries,~* multiple pregnancies

- Gender: FEMALE
- Minimum Age: 15 Years
- Maximum Age: 48 Years
- Healthy Volunteers: t

Study Arms:
- ultrasound (Type: None): primiparous women with prolonged labours will be eligible for examination

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