The primary objective of the study is to evaluate the feasibility, the quality and the utility of a polygraphic control at home in order to appreciate the efficacy of the night time non-invasive ventilation (allowing to optimize the ventilator settings when the results are not satisfactory).

Inclusion Criteria:

• Patient ≥ 18 years;
• Patient with chronic respiratory insufficiency has just been posed non-invasive ventilation (NIV) in the hospital, according to the latest international recommendations ;
• Affiliation to the social security scheme;
• Patient has signed the informed consent form to participate to the study.

Exclusion Criteria:

• Patient refusal;
• Patient under guardianship;
• Patient under AME scheme;
• Patients living more than 40 km from reference center;
• Patient depending on mechanical ventilation (more than 6 hours daily);
• Rapidly or reversible evolutive neuro-myopathy (Amyotrophic lateral sclerosis, Guillain Barré syndrome, myasthenia).

Chronic respiratory failure due to neuromuscular diseases under non-invasive mechanical ventilation