What is the formula for SVO2?

The formula for mixed venous oxygen saturation, SVO2, represents the balance between oxygen delivery and oxygen consumption in the body. Specifically, SVO2 is derived from the difference between the amount of oxygen delivered to the tissues (DO2) and the amount of oxygen consumed by the tissues (VO2).

In this context, DO2 refers to the total oxygen delivered to the tissues, which is influenced by cardiac output and the arterial oxygen content, while VO2 signifies the oxygen that is utilized by the body for metabolic processes. Thus, the formula that expresses SVO2 as the difference between these values provides critical insight into the efficiency of oxygen utilization and the adequacy of tissue perfusion.

Understanding this relationship helps in clinical monitoring and assessment during ECMO management, as it allows healthcare providers to gauge the effectiveness of oxygenation and perfusion status, tailoring interventions accordingly.