组织缺氧指组织细胞氧利用障碍导致组织无氧代谢。组织缺氧临床检测方法主要有体征、pH和乳酸、送氧量(DO_2)/耗氧量(VO_2)、混合静脉血氧饱和度(SVO_2)、静-动脉血二氧化碳分压梯度(△PCO_2)、胃粘膜pHi等。体征缺乏特异性;DO_2/VO_2虽可作为判断组织缺氧的敏感指标,但困难较多,在危重症监护中不是特 Hypoxia refers to tissue oxygen utilization disorders leading to tissue anaerobic metabolism. The main methods of detecting hypoxia include clinical manifestation, pH and lactic acid, DO_2 / VO_2, mixed venous oxygen saturation (SVO_2), static-arterial carbon dioxide partial pressure gradient (ΔPCO_2) , Gastric mucosal pHi and so on. Lack of specificity of the signs; DO_2 / VO_2 can be used as a sensitive indicator of tissue hypoxia, but more difficult, not in critical care monitoring