Near infrared spectroscopy (NIRS) of the thenar eminence in anesthesia and intensive care

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作者：
Miklos Lipcsey
Nicholas CZ Woinarski
Rinaldo Bellomo
机构：
[1] Uppsala University,Department of Surgery, Section of Anaesthesiology and Intensive Care
[2] Austin Hospital,Department of Intensive Care
[3] Monash University,Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine
[4] Alfred Centre,undefined
来源：
Annals of Intensive Care | / 2卷
关键词：
Septic Shock; Septic Patient; Sequential Organ Failure Assessment; Levosimendan; Septic Shock Patient;
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摘要：
Near infrared spectroscopy of the thenar eminence (NIRSth) is a noninvasive bedside method for assessing tissue oxygenation. The NIRS probe emits light with several wavelengths in the 700- to 850-nm interval and measures the reflected light mainly from a predefined depth. Complex physical models then allow the measurement of the relative concentrations of oxy and deoxyhemoglobin, and thus tissue saturation (StO2), as well as an approximation of the tissue hemoglobin, given as tissue hemoglobin index.
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