Please assess the completion status of the following clinical trial:

Trial Title: A Study of Expiratory Pressure Modulation in Moderate to Severe COPD Patients - Phase 1b

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: OTHER
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~1. Age \> 18 years who are contractually capable and mentally able to understand and follow the instructions of the study personnel~2. Signed informed consent~3. Moderate to severe COPD patients (FEV1/FVC ratio \<70% and FEV1 \< 50% pred) with chronic hypercapnic respiratory failure (PaCO2 \>45 mmHg)~4. Currently using NIV~Exclusion Criteria:~1. Acute exacerbation of COPD, acute respiratory failure (ph \< 7,35 and/or respiratory rate \>30/min)~2. Unstable heart failure~3. Cardiac failure with dehydration~4. Pregnancy/breastfeeding women~5. Pneumothorax/-mediastinum~6. Increased risk of pneumothorax, pneumomediastinum or venous air embolism~7. In the opinion of the investigator, the patient is unsuitable for the study

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

Study Arms:
- Single centre, single arm (Type: EXPERIMENTAL): Noninvasive ventilation with expiratory modulation. Assessment of comfort and blood gases.

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