Oxygenation

Oxygenation is the essential physiological process of transferring oxygen from the environment into the bloodstream and delivering it to tissues to support aerobic metabolism (NCBI/Veterian Key). In clinical practice, especially within intensive care and anesthesiology, "oxygenation targets" refer to therapeutic goals for arterial oxygen levels, such as partial pressure (PaO2) or saturation (SpO2), aimed at maintaining tissue viability (StatPearls, Cochrane Library). It is not a single molecular entity like a receptor or enzyme but rather a systemic biological process involving the coordination of the respiratory, cardiovascular, and hematological systems (NCBI Bookshelf). Impaired oxygenation, known as hypoxemia or tissue hypoxia, is a hallmark of critical conditions such as Acute Respiratory Distress Syndrome (ARDS) and Chronic Obstructive Pulmonary Disease (COPD) (ATS Journals). Management typically involves the administration of medical oxygen, mechanical ventilation, and the use of pulmonary vasodilators to optimize gas exchange (ResearchGate). While supplemental oxygen is life-saving, excessive oxygenation (hyperoxia) can lead to the production of reactive oxygen species and oxygen toxicity, potentially exacerbating lung injury (PLOS Biology). Consequently, contemporary clinical research focuses on identifying specific oxygenation targets that balance the prevention of hypoxia against the risks of oxidative damage (Cochrane Library).

Other names

Tissue oxygenationSystemic oxygenationOxygen uptakeOxygen delivery (DO2)Arterial oxygenationOxygen saturation

Increasing the fraction of inspired oxygen (FiO2), enhancing pulmonary gas exchange through selective vasodilation, or increasing the oxygen-carrying capacity of the blood via erythropoiesis stimulation or synthetic oxygen carriers.