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Surg Neurol Int. 2010 Nov 27;1:75. doi: 10.4103/2152-7806.73316.

Cerebral and somatic venous oximetry in adults and infants.

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  • 1Medical Science, Somanetics Corporation, Troy, USA.



The development in the last decade of noninvasive, near infrared spectroscopy (NIRS) analysis of tissue hemoglobin saturation in vivo has provided a new and dramatic tool for the management of hemodynamics, allowing early detection and correction of imbalances in oxygen delivery to the brain and vital organs.


The theory and validation of NIRS and its clinical use are reviewed. Studies are cited documenting tissue penetration and response to various physiologic and pharmacologic mechanisms resulting in changes in oxygen delivery and blood flow to the organs and brain as reflected in the regional hemoglobin oxygen saturation (rSO(2)). The accuracy of rSO(2) readings and the clinical use of NIRS in cardiac surgery and intensive care in adults, children and infants are discussed.


Clinical studies have demonstrated that NIRS can improve outcome and enhance patient management, avoiding postoperative morbidities and potentially preventing catastrophic outcomes.


CO2 reactivity; Hemodynamic management; INVOS; near infrared spectroscopy; noninvasive monitoring; tissue oxygenation

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