The utility of far‐infrared illumination in oxygenation dynamics as measured with near‐infrared spectroscopy

Abstract

Near-infrared spectroscopy (NIRS) is a noninvasive method for measuring the oxygenation in muscle and other tissues in vivo. For quantitative NIRS measurement of oxygenation dynamics, the vessel-occlusion test was usually applied as physiological intervention. There are several drawbacks of the vessel-occlusion method that include skin contact, uncomfortable and microcirculation block of patients. Thus, we propose the far-infrared (FIR) illumination as a new physiological intervention method in this paper. Our preliminary result shows a linear correlation of oxygenation dynamic signals between FIR illumination and arterial-occlusion test (AOT) that implies the FIR illumination could be applied for hemodynamic response measurement in clinical diagnosis.

Gender-Related Effect in Oxygenation Dynamics by Using Far-Infrared Intervention with Near-Infrared Spectroscopy Measurement: A Gender Differences Controlled Trial

“…In our previous study, we showed that a relationship exists between AOTs and FIR illumination tests for detecting tissue oxygenation through NIRS assessment. The results of that study indicated that FIR illumination tests might be a suitable physiological intervention for replacing AOTs [ 11 ].…”

Optimization of extracorporeal membrane oxygenation therapy using near‐infrared spectroscopy to assess changes in peripheral circulation: A pilot study

“…NIRS has been proposed as a real‐time noninvasive system for monitoring regional microcirculation and is based on different absorption and scattering coefficients of more than two wavelengths. Our study published in 2012 revealed a linear correlation in oxygenation dynamic signals between NIRS and an arterial occlusion test [13], implying that NIRS can be a tool for clinical diagnosis. We published a study comparing 44 healthy participants with 35 patients with sepsis in an ICU.…”

Oxygenation dynamics of sepsis patients undergoing far‐infrared intervention based on near‐infrared spectroscopy

“…Our previous study from 2012 showed a linear correlation of oxygenation dynamic signals between FIR illumination and an arterial‐occlusion test, implying that FIR illumination can be applied in clinical diagnoses . Subsequently, we determined that FIR hemodynamics vary between sexes, with females experiencing smaller increases in HbO 2 than males do.…”