Figure 3From: 500 ml of blood loss does not decrease non-invasive tissue oxygen saturation (StO2) as measured by near infrared spectroscopy - A hypothesis generating pilot study in healthy adult women Focus on the reaction of a StO 2 -trace after a vascular occlusion test. Δ: delta, difference between StO2max and StO2 baseline; rate of decrease (first 25%); rate of recovery.Back to article page