Please assess the completion status of the following clinical trial:

Trial Title: Ultrasound for Confirmation of Gastric Tube Placement in Critically Ill Patients Under Invasive Mechanical Ventilation

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

Eligibility Criteria:
Inclusion Criteria:~* Clinical indication of nasogastric tube placement~* Age than 20 years old.~Exclusion criteria:~* Facial trauma or head-base fractures~* Esophageal or gastric resection~* Esophageal strictures or alkaline injury~* Open wound in the area to prevent ultrasonography

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- ultrasonography (US) (Type: EXPERIMENTAL): None
- Standard routine (SR) (Type: ACTIVE_COMPARATOR): None

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