Static hyperinflation is frequent in Chronic obstructive pulmonary disease (COPD) , resulting
in increased end expiratory lung volume and positive end expiratory pressure (PEEPi) at the
end of a normal expiration.
Static hyperinflation worsens the work of breathing is increases patient's dyspnea.
The application of a continuous positive airway pressure (CPAP) has been shown to improve
static hyperinflation and to decrease the work of breathing.
Sleep is deteriorated in COPD patients, and causal factors includes static hyperinflation.
The purpose of our study is to assess the effect of nocturnal CPAP on sleep quality and
functional respiratory parameters.