Background
hypoxia, hypercapnia
HYPOXIA
Near-infrared spectroscopy (NIRS) has been widely used in patients undergoing non-cardiac surgery because it is a non-invasive, continuous, and timely method for monitoring regional cerebral tissue oxygen saturation (SctOEvidence in healthy volunteers showed that respiratory parameters significantly influence the accuracy of SctOOne-lung ventilation (OLV) is a necessary technique in thoracic surgery. The incidences of hypoxia and hypercapnia are as high as 50% during OLV [The present study was primarily designed to investigate whether OLV influences the agreement between the left and right SctO