Please assess the completion status of the following clinical trial:

Trial Title: Randomized Crossover Study of Neurally Adjusted Ventilatory Assist (NAVA) in Preterm Infants

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: SUPPORTIVE_CARE
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE2
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* preterm infants mechanically ventilated~* ventilatory set frequency is under 25~* with informed consent of their parents~Exclusion Criteria:~* major congenital anomalies~* patients without self respiratory effort~* use of sedative or anesthetic drugs~* grade III or IV intraventricular hemorrhage~* phrenic nerve palsy or insufficiency

- Gender: ALL
- Minimum Age: None
- Maximum Age: 12 Weeks
- Healthy Volunteers: f

Study Arms:
- ventilator assist (Type: EXPERIMENTAL): None

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