Optical Monitoring

  • Alexandre Augusto Pinto LimaEmail author
  • Daniel De Backer


Optical methods apply light with different wavelengths directly to tissue components and assess tissue microvascular oxygenation based on the specific absorption spectrum of oxygenated haemoglobin and deoxygenated haemoglobin. Commonly used optical methods for tissue monitoring in shock include near-infrared spectroscopy, peripheral perfusion index and laser Doppler flowmetry. NIRS-measured parameters provide quantitative information regarding blood flow and local oxygen consumption and are calculated directly or indirectly using arterial or venous occlusion. Laser Doppler flowmetry measures microvascular function based on endothelium-dependent vascular responses in the skin microcirculation during reactive hyperaemia. The peripheral perfusion index is derived from the photoelectric plethysmographic signal of pulse oximetry and has been used as a noninvasive measure of peripheral vascular tone variations.


Physiological monitoring Circulatory failure Shock Sepsis Microcirculation Diagnostic techniques and procedures Near-infrared spectroscopy Oximetry Pulsatile flow Laser Doppler flowmetry Blood flow velocity 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Alexandre Augusto Pinto Lima
    • 1
    Email author
  • Daniel De Backer
    • 2
  1. 1.Department of Intensive CareErasmus MC UniversityRotterdamThe Netherlands
  2. 2.CHIREC HospitalsUniversité Libre de BruxellesBrusselsBelgium

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