Please assess the completion status of the following clinical trial:

Trial Title: Bi-Level Positive Airway Ventilation for Acute Chest Syndrome

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

Eligibility Criteria:
Inclusion Criteria:~* patients diagnosed with Hemoglobin SS (HB SS), the most common type of sickle cell disease~* patients diagnosed with Hemoglobin SC (HB SC), the second most common type of sickle cell disease.~* patients diagnosed with Hemoglobin sickle beta-zero thalassemia ( HB SB0thal) or Hemoglobin sickle thalassemia (HB SBthal)~Must meet clinical criteria for ACS- an infiltrate on Chest X-ray and one of the following:~* Respiratory symptoms/signs (patients pulse oximetry \< 92% or oxygen saturation \< 2% below their baseline, tachypnea, cough, and increased work of breathing)~* Fever~* Chest pain AND~Patients' eligible for a simple transfusion based on one of the following criteria:~* Hypoxemia (patients pulse oximetry \< 92% or oxygen saturation \< 2% below their baseline)~* Hemoglobin \< 5 gm/dl~* Increased work of breathing~Exclusion Criteria:~* Patient requires exchange transfusion within first 24 hours of admission~* Patient requires PCCU transfer within first 24 hours of admission~* Hemoglobin \> 9gm/dl secondary to these patients requiring an exchange transfusion

- Gender: ALL
- Minimum Age: 4 Years
- Maximum Age: 21 Years
- Healthy Volunteers: f

Study Arms:
- Bi-level Positive Airway Pressure Device (Type: EXPERIMENTAL): BiPAP initiated for at least 16 hours per day for a minimum of 48hrs.
- Sham CPAP (Type: SHAM_COMPARATOR): Physiologic continuous positive airway pressure (CPAP) initiated for at least 16 hours per day for a minimum of 48hrs.

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