ABSTRACT
Sleep disturbance is a common problem in many medical disorders, including respiratory diseases, such as chronic obstructive pulmonary disease (COPD) and bronchial asthma. Impairment of sleep may worsen symptoms in these disorders and their prognosis. The diseases may also present particular clinical or functional patterns during sleep. Furthermore, since COPD, asthma, and sleep apnea are prevalent in the general population, associations between these disorders may often be found in the same patient, particularly in a hospital setting.
