None listed
Conditions
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
Chronic Airflow Limitation (FEV1< 1.5 or < 50% Predicted; FEV1/FVC < 60%, TLC > 92%; FEV1 with bronchodilators < 20%)+Daytime awake PaCO2 >46 mm Hg at least twice in the previous 6 months during periods of clinical stability;+Willing and competent to sign informed consent.+Under 80 years of age+On oxygen therapy for a minimum of three months prior to enrollment.
Exclusion criteria
Serious coexisting disease (eg. left ventricular failure, malignancy, renal failure, unstable angina) likely to affect survival during the study period+Significant Obstructive Sleep Apnea (defined as Apnoea/hypopoea index >20/h) or Obesity Hypoventilation Syndrome +Significant recent psychological or psychiatric problems likely to significantly impair ability to participate in the study and comply with treatment; +Previous treatment with NIV.