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 ...
Hypercapnic patients were best separated from normocapnic patients using thresholds for FVC% of 56% predicted and 33% predicted for FEV1%. Hypercapnia in patients with chronic obstructive ...