Please assess the completion status of the following clinical trial:

Trial Title: Qp/Qs Ratio by Noninvasive Methods in Children With Shunt Dependent Pulmonary Circulation

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

Eligibility Criteria:
Inclusion Criteria:~1. pediatric cardiac patients scheduled to cardiac operation (shunt dependent pulmonary circulation)~2. preoperative SpO2\<97%~Exclusion Criteria:~1. unable to measure pulse oximeter or cerebral oximeter signal~2. unable to measure SaO2 or SmvO2~3. unstable vital sign

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

Study Arms:
- Qp/Qs ratio monitoring (Type: None): Qp/Qs ratio monitoring

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