Comparison of four different vascular occlusion tests for assessing reactive hyperemia using near-infrared spectroscopy

The comparison of recovery slopes between volunteers and septic patients and the fact that the recovery slope was influenced by the extent of muscle tissue oxygen saturation decrease during ischemia and not by the ischemic time both support the use of a fixed minimal muscle tissue oxygen saturation target (40%) over the use of a fixed ischemic time (3 mins) for assessing reactive hyperemia by using near-infrared spectroscopy.