Cerebral desaturations – common, critical and treatable

Research has consistently shown that cerebral tissue oxygen desaturations are common across a broad spectrum of surgical procedures and patient populations – and that they can cause significant complications when left untreated, including:

  • Increased hospital & ICU length of stay (LOS)
  • Increased incidence of POCD
  • Decreased survival

By understanding the incidence, risks and interventions available to address them, you may be able to identify – and even reverse – cerebral desaturations.

Incidence and impact of cerebral desaturations

The cardiac surgical population in particular has demonstrated a significant incidence of cerebral desaturations, which has been associated with a wide range of adverse outcomes.1-9

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Patient incidence of desaturations during cardiac surgery

Impact of cerebral desaturations among cardiac surgical patients

Time under threshold and negative outcomes

Fischer et al. data13 shows the relationship among lower cerebral saturations, severe adverse outcomes and even death.

Time under threshold and negative outcomes

Read more about risks and outcomes of cerebral desaturations

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Preserve brain health: understand and intervene

Detecting, preventing and avoiding cerebral desaturations are critical in helping to assure patient brain health.

While desaturations can lead to serious complications, the good news is that with the right interventions at the right time, they can be treated – and even reversed.

Reversing desaturations can improve outcomes

Cerebral desaturations result from an imbalance in the brain tissue’s oxygen consumption and delivery.

Mitigating desaturations depends on an understanding of the various physiologic factors that impact this balance.

This graphic summarizes interventions that have been shown to increase StO2.

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Interventions that increase StO2

Success of interventions to reverse cerebral desaturations

Success of interventions to reverse cerebral desaturations

Watch: Physiologic factors affecting cerebral brain health

For an in-depth look at these physiologic factors and how they impact brain tissue oxygenation (StO2) values, explore this video.

Reversing or avoiding cerebral desaturations has been shown to lead to:

  • Reduced incidence of cognitive impairment
  • Reduced ICU stay
  • Reduced hospital stay

Reversing or avoiding cerebral desaturations

Reversing or avoiding cerebral desaturations

Reversing or avoiding cerebral desaturations

*NYHA class 1

Intervene with confidence – tissue oximetry

Cerebral oximetry is the only technology that monitors cerebral oxygenation noninvasively and continuously – allowing clinicians to detect imbalances and optimize perfusion to avoid and even reverse adverse outcomes.

By using StO2 in conjunction with vital signs, advanced hemodynamic monitoring and laboratory assessments, clinicians can identify the root cause of imbalances and intervene appropriately.

ForeSight sensor

The ForeSight system difference

ForeSight system

A complete, individualized view of tissue oximetry is key to treating or reversing desaturations – but not all monitoring systems deliver these critical insights.

Some systems are not designed to account for differing patient anatomies, do not give clear, reliable oxygen saturation measures, or do not indicate the root cause of desaturations.

ForeSight sensor offers a unique design and exclusive fifth wavelength of near infrared light (NIRS), to account for these patient differences – enabling reliable StO2 measures from patient to patient.

Only the ForeSight tissue oximetry system:

  • Accounts for individual differences, including skin tone, size, age, skin-to-cortex distance and acuity
  • Delivers absolute StO2 values, making preinduction baselines optional
  • Integrates with the HemoSphere platform for an all-in-one view of patient perfusion

Discover the ForeSight tissue oximetry system »

See the complete picture of oxygen delivery and consumption

Oxygen delivery and consumption

Treating and avoiding cerebral desaturations depends on a comprehensive view of hemodynamics.

That’s why ForeSight sensor integrates with HemoSphere monitor, delivering advanced parameters like cardiac output (CO) and mean arterial pressure (MAP) – and displays these insights on a single monitor.

This “all-in-one” view delivers comprehensive insights into hemodynamics that can help you drill down to identify the root cause of imbalances – enabling you to administer interventions with confidence.

*PaCO2, Hgb, SpO2 not currently available on HemoSphere monitor

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Comprehensive education empowering clinical advancement

With a long-term commitment to improving the quality of care for surgical and critical care patients through education, Edwards clinical education meets you no matter where you are in the learning process – with a continuum of resources and tools that continuously support you as you solve the clinical challenges facing you today, and in the future.

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  1. Yao FSF, et al. Cerebral oxygen desaturation is associated with early postoperative neuropsychological dysfunction in patients undergoing cardiac surgery. J Cardiothorac Vasc Anesth. 2004;18(5):552-558.
  2. Murkin JM, et al. Monitoring brain oxygen saturation during coronary bypass surgery: a randomized, prospective study. Anesth Analg. 2007;104(1):51-58.
  3. Schön J, et al. Cerebral oxygen saturation monitoring in on-pump cardiac surgery – A 1 year experience. Appl Cardiopulm Pathophysiol. 2009;13: 243-252.
  4. de Tournay-Jetté, et al. The relationship between cerebral oxygen saturation changes and postoperative cognitive dysfunction in elderly patients after coronary artery bypass graft surgery. Cardiothorac Vasc Anesth. 2011;25(1):95-104.
  5. Deschamps A, et al. Reversal of decreases in cerebral saturation in high-risk cardiac surgery. J Cardiothorac Vasc Anesth. 2013;27(6):1260-1266.
  6. Greenberg SB, et al. Cerebral desaturation events in the intensive care unit following cardiac surgery. J Crit Care. 2013;28(3):270-276.
  7. Deschamps A, et al. Cerebral oximetry monitoring to maintain normal cerebral oxygen saturation during high-risk cardiac surgery: a randomized controlled feasibility trial. Anesthesiology. 2016;124(4):826-836.
  8. Subramanian B, et al. A multicenter pilot study assessing regional cerebral oxygen desaturation frequency during cardiopulmonary bypass and responsiveness to an intervention algorithm. Anesth Analg. 2016;122(6):1786-1793.
  9. Uysal S, et al. Optimizing cerebral oxygenation in cardiac surgery: A randomized controlled trial examining neurocognitive and perioperative outcomes. J Thorac Cardiovasc Surg. 2020;159(3):943-953.
  10. Slater JP, et al. Cerebral oxygen desaturation predicts cognitive decline and longer hospital stay after cardiac surgery. Ann Thorac Surg. 2009;87(1):36-45.
  11. Stannard, B., Levin, M. A., Lin, H. M., & Weiner, M. M. (2021). Regional cerebral oximetry is consistent across self-reported racial groups and predicts 30-day mortality in cardiac surgery: a retrospective analysis. J Clin Monit Comput. 35(2), 413–421.
  12. Hong SW, et al. Prediction of cognitive dysfunction and patients’ outcome following valvular heart surgery and the role of cerebral oximetry. Eur J Cardiothorac Surg. 2008;33(4):560-565.
  13. Fischer GW, et al. Noninvasive cerebral oxygenation may predict outcome in patients undergoing aortic arch surgery. J Thorac Cardiovasc Surg. 2011;141(3):815-821.
  14. Colak Z, et al. Influence of intraoperative cerebral oximetry monitoring on neurocognitive function after coronary artery bypass surgery: a randomized, prospective study. Eur J Cardiothorac Surg. 2015;47(3):447-54.
  15. Goldman S, et al. Optimizing intraoperative cerebral oxygen delivery using noninvasive cerebral oximetry decreases the incidence of stroke for cardiac surgical patients. Heart Surg Forum. 2004;7(5):E376-81.

Medical device for professional use

Medical device for professional use

For a listing of indications, contraindications, precautions, warnings, and potential adverse events, please refer to the Instructions for Use (consult eifu.edwards.com where applicable).

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