• Kevin R Ward, Rao R Ivatury, BarbeeR WayneRW, James Terner, Roland Pittman, Ivo P Torres Filho, and Bruce Spiess.
• Virginia Commonwealth University Reanimation Engineering Shock Center, VCURES, Department of Emergency Medicine, Virginia Commonwealth University, P.O. Box 980401, Richmond VA 23298, USA. krward@vcu.edu
• Resuscitation. 2020 Jun 1; 68 (1): 27-44.

AbstractClinicians now realize the limitations of the physical examination in detecting compensated shock states, the severity of uncompensated states, and in determining the adequacy of resuscitation in order to prevent subsequent post-traumatic multisystem organ failure and death. A renewed interest has developed in interrogating the state of oxygen transport at the end-organ level in the trauma patient. Although used as a research tool and now clinically to monitor cerebral oxygenation during complex cardiovascular and neurosurgery, near infrared absorption spectroscopy (NIRS) is being more aggressively investigated and now marketed clinically as a noninvasive means to assess tissue oxygenation in the trauma patient at the end organ level. This paper will describe the principles of NIRS and the basis for its proposed use in the trauma patient to assess tissue oxygenation. This includes its known limitations, current controversies, and what will be needed in the future to make this technology a part of the initial and ongoing assessment of the trauma patient. The ultimate goal of such techniques is to prevent misassessment of patients and inadequate resuscitation, which are believed to be major initiators in the development of multisystem organ failure and death.

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