Patients with a restrictive pulmonary disease (slow evolution neuromuscular or thorax cage diseases, obesity or nocturnal hypoventilation) and hypercapnic chronic respiratory failure with standard criteria for NIV.

COPD patients who need NIV because of another reason (obesity, nocturnal hyperventilation or nocturnal hypercapnic response to oxygen).

PaCO2 ≥ de 50 mmHg.

Clinically stable (at least for one month).

Possibility to fit a nasal mask for NIV treatment (ultra mirage, mirage).

Home Mechanical Ventilation Effectiveness and Air Leaks

What this study is about