Please assess the completion status of the following clinical trial:

Trial Title: Physiological Study to Compare Noninvasive Ventilation (NIV) Masks

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Already using overnight CPAP and tolerating the therapy well (over 4 hours use/night)~* Hypercapnia: venous bicarbonate of 30 milliequivalents of solute per liter (Eq/L) or more, OR transcutaneous carbon dioxide (TcCO2) of 50 millimeters of mercury (mmHg) of more.~* Provide written informed consent~* Already use a full (oronasal) face mask for CPAP~* Willing to have a venous blood sample taken during the pre-screening visit.~Exclusion Criteria:~* Presence of sleep apnea on CPAP:~  * Subjects excluded if they have an apnea-hypopnea index (AHI) of more than 20, or~ * If the AHI has not already decreased by 50 percent or more from pre-CPAP to with CPAP.~* Forced expiratory volume in 1 second (FEV1) of less than 40 percent of predicted.~* Forced expiratory volume in 1 second divided by forced vital capacity (FEV1/FVC) less than fifty percent of predicted, at the screening visit.~  * Have poorly controlled asthma or changing asthma symptoms.~ * Nasal obstruction~ * Do not fit Mask A or Mask B~ * Agitation or psychological illness

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 100 Years
- Healthy Volunteers: f

Study Arms:
- Mask A (Type: EXPERIMENTAL): Overnight CPAP using the participant's usual pressure settings and using Mask A. One night only.
- Mask B (Type: ACTIVE_COMPARATOR): Overnight CPAP using the participant's usual pressure settings and using Mask B. One night only.

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