Peripheral tissue oximetry: comparing three commercial near-infrared spectroscopy oximeters on the forearm.

ABSTRACT: Estimation of regional tissue oxygenation (rStO2) by near infrared spectroscopy enables non-invasive end-organ oxygen balance monitoring and could be a valuable tool in intensive care. However, the diverse absolute values and dynamics of different devices, and overall poor repeatability of measurements are a problem. The aim of the present study is to test the hypothesis that INVOS 5100C, FORE-SIGHT and NONIN EQUANOX 7600 have similar properties concerning absolute values, repeatability, and sensitivity to changes in rStO2. To test repeatability the sensors were repositioned 20 times during hemodynamic steady state on the adult forearm. Afterwards six vascular occlusions by inflation of an upper arm cuff were done to achieve low oxygenation in the forearm. Absolute values were compared by

SUBMITTER: Hyttel-Sorensen S 

PROVIDER: S-EPMC3948526 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature