Background: The pathogenesis of daytime hypercapnia (PaCO 2 ≥ 45 mm Hg) may be directly linked to the existence of obstructive sleep apnea syndrome (OSAS) per se, although only some patients ...
College of Information technology and communication, Qufu Normal University, Rizhao, China. College of Information technology and communication, Qufu Normal University, Rizhao, China;College of ...