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Obstructive sleep apnea syndrome is a common disorder in adults associated with several cardiovascular diseases and impaired quality of life. Chronic obstructive pulmonary disease is also a common clinical condition in middle-aged adults. The combination of these two conditions can eventuate a severe combined sleep-related breathing disorder. It is important to recognize coexisting sleep apnea in patients with chronic obstructive pulmonary disease in time and to treat it appropriately. Orv. Hetil., 2012, 153, 892–897.

Simultaneous occurrence of chronic obstructive pulmonary disease and obstructive sleep apnea: the overlap syndrome