Log in

Intraoperative use of processed electroencephalogram in a quaternary center: a quality improvement audit

  • Brief Report
  • Published:
Journal of Clinical Monitoring and Computing Aims and scope Submit manuscript

Abstract

Although intraoperative electroencephalography (EEG) is not consensual among anesthesiologists, growing evidence supports its use to titrate anesthetic drugs, assess the level of arousal/consciousness, and detect ischemic cerebrovascular events; in addition, intraoperative EEG monitoring may decrease the incidence of postoperative neurocognitive disorders. Based on the known and potential benefits of intraoperative EEG monitoring, an educational program dedicated to staff anesthesiologists, residents of Anesthesiology and anesthesia technicians was started at Cleveland Clinic Abu Dhabi in May 2022 and completed in June 2022, aiming to have all patients undergoing general anesthesia with adequate brain monitoring and following international initiatives promoting perioperative brain health. All the surgical cases performed under General Anesthesia at 24 daily locations were prospectively inspected during 15 consecutive working days in March 2023. The use or absence of a processed EEG monitor was registered. Of 379 surgical cases distributed by 24 locations under General Anesthesia, 233 cases (61%) had processed EEG monitoring. The specialty with the highest use of EEG monitoring was Cardiothoracic Surgery, with 100% of cases, followed by interventional Cardiology (90%) and Vascular Surgery (75%). Otorhinolaryngology (29%), Gastrointestinal Endoscopy (25%), and Interventional Pulmonology (20%) were the areas with the lowest use of EEG monitoring. Of note, in the Neuroradiology suite, no processed EEG monitor was used in cases under General Anesthesia. We identified a reasonable use of EEG monitoring during general anesthesia, unfortunately not reaching our target of 100%. The educational and support program previously implemented within the Anesthesiology Institute needs to be continued and improved, including workshops, online discussions, and journal club sessions, to increase the use of EEG monitoring in underused areas.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price includes VAT (France)

Instant access to the full article PDF.

Similar content being viewed by others

Data availability

No datasets were generated or analysed during the current study.

References

  1. Li Y, Bohringer C, Liu H. Double standard: why electrocardiogram is standard care while electroencephalogram is not? Curr Opin Anaesthesiol. 2020;33(5):626–32. https://doi.org/10.1097/ACO.0000000000000902.

    Article  PubMed  Google Scholar 

  2. Lobo FA, Shander A. Modern anesthetic noninvasive monitoring: a deep look into Perioperative Care. J Cardiothorac Vasc Anesth. 2019;33(Suppl 1):S1–2. https://doi.org/10.1053/j.jvca.2019.03.037.

    Article  PubMed  Google Scholar 

  3. Escallier KE, Nadelson MR, Zhou D, Avidan MS. Monitoring the brain: processed electroencephalogram and peri-operative outcomes. Anaesthesia. 2014;69(8):899–910. https://doi.org/10.1111/anae.12711. Epub 2014 Jun 6.

    Article  CAS  PubMed  Google Scholar 

  4. Ryalino C, Sahinovic MM, Drost G, Absalom AR. Intraoperative monitoring of the central and peripheral nervous systems: a narrative review. Br J Anaesth. 2024;132(2):285–99. Epub 2023 Dec 19.

    Article  PubMed  Google Scholar 

  5. Lobo FA, Saraiva AP, Nardiello I, Brandão J, Osborn IP. Electroencephalogram Monitoring in Anesthesia Practice. Curr Anesthesiology Rep. 2021;11(3):169–80. https://doi.org/10.1007/s40140-021-00461-6.

    Article  Google Scholar 

  6. Scheeren TWL, Kuizenga MH, Maurer H, Struys MMRF, Heringlake M. Electroencephalography and Brain Oxygenation Monitoring in the Perioperative Period. Anesth Analg. 2019;128(2):265–77. https://doi.org/10.1213/ANE.0000000000002812.

    Article  PubMed  Google Scholar 

  7. Purdon PL, Sampson A, Pavone KJ, Brown EN. Clinical Electroencephalography for anesthesiologists: part I: background and basic signatures. Anesthesiology. 2015;123(4):937–60. https://doi.org/10.1097/ALN.0000000000000841.

    Article  CAS  PubMed  Google Scholar 

  8. Montupil J, Defresne A, Bonhomme V. The raw and processed Electroencephalogram as a monitoring and Diagnostic Tool. J Cardiothorac Vasc Anesth. 2019;33(Suppl 1):S3–10. https://doi.org/10.1053/j.jvca.2019.03.038.

    Article  PubMed  Google Scholar 

  9. Bennett C, Voss LJ, Barnard JP, Sleigh JW. Practical use of the raw electroencephalogram waveform during general anesthesia: the art and science. Anesth Analg. 2009;109(2):539–50. https://doi.org/10.1213/ane.0b013e3181a9fc38.

    Article  PubMed  Google Scholar 

  10. Swarbrick CJ, Partridge JSL. Evidence-based strategies to reduce the incidence of postoperative delirium: a narrative review. Anaesthesia. 2022;77(Suppl 1):92–101. https://doi.org/10.1111/anae.15607.

    Article  PubMed  Google Scholar 

  11. Evered L, Atkins K, Silbert B, Scott DA. Acute peri-operative neurocognitive disorders: a narrative review. Anaesthesia. 2022;77(Suppl 1):34–42. https://doi.org/10.1111/anae.15613.

    Article  PubMed  Google Scholar 

  12. Guay CS, Kafashan M, Huels ER, Jiang Y, Beyoglu B, Spencer JW. Et. Al. Postoperative Delirium Severity and Recovery Correlate with Electroencephalogram Spectral features. Anesth Analg. 2023;136(1):140–51. Epub 2022 May 13.

    Article  PubMed  Google Scholar 

  13. Hesse S, Kreuzer M, Hight D, Gaskell A, Devari P, Singh D et al. Association of electroencephalogram trajectories during emergence from anaesthesia with delirium in the postanaesthesia care unit: an early sign of postoperative complications. Br J Anaesth. 2019;122(5):622–634. https://doi.org/10.1016/j.bja.2018.09.016. Epub 2018 Oct 25. Erratum in: Br J Anaesth. 2019;123(2):255.

  14. Evered LA, Goldstein PA. Reducing Perioperative Neurocognitive disorders (PND) through depth of Anesthesia Monitoring: a critical review. Int J Gen Med. 2021;14:153–62. https://doi.org/10.2147/IJGM.S242230.

    Article  PubMed  PubMed Central  Google Scholar 

  15. Lewis SR, Pritchard MW, Fawcett LJ, Punjasawadwong Y. Bispectral index for improving intraoperative awareness and early postoperative recovery in adults. Cochrane Database Syst Rev. 2019;9(9):CD003843. https://doi.org/10.1002/14651858.CD003843.pub4.

    Article  PubMed  Google Scholar 

  16. Lobo FA, Schraag S. Limitations of anaesthesia depth monitoring. Curr Opin Anaesthesiol. 2011;24(6):657–64. https://doi.org/10.1097/ACO.0b013e32834c7aba.

    Article  PubMed  Google Scholar 

  17. Dahaba AA. Different conditions that could result in the bispectral index indicating an incorrect hypnotic state. Anesth Analg. 2005;101(3):765–73. https://doi.org/10.1213/01.ane.0000167269.62966.af.

    Article  PubMed  Google Scholar 

  18. García PS, Kreuzer M, Hight D, Sleigh JW. Effects of noxious stimulation on the electroencephalogram during general anaesthesia: a narrative review and approach to analgesic titration. Br J Anaesth. 2021;126(2):445–57. https://doi.org/10.1016/j.bja.2020.10.036.

    Article  CAS  PubMed  Google Scholar 

  19. Westly HJ, Kelley KW. Down-regulation of glucocorticoid and beta-adrenergic receptors on lectin-stimulated splenocytes. Proc Soc Exp Biol Med. 1987;185(2):211–8. https://doi.org/10.3181/00379727-185-42537.

    Article  CAS  PubMed  Google Scholar 

  20. Berian JR, Zhou L, Russell MM, Hornor MA, Cohen ME, Finlayson E, et al. Postoperative delirium as a target for Surgical Quality Improvement. Ann Surg. 2018;268(1):93–9. https://doi.org/10.1097/SLA.0000000000002436.

    Article  PubMed  Google Scholar 

  21. Inouye SK, Marcantonio ER, Kosar CM, Tommet D, Schmitt EM, Travison TG, et al. The short-term and long-term relationship between delirium and cognitive trajectory in older surgical patients. Alzheimers Dement. 2016;12(7):766–75. https://doi.org/10.1016/j.jalz.2016.03.005. Epub 2016 Apr 18.

    Article  PubMed  Google Scholar 

  22. Fong TG, Inouye SK. The inter-relationship between delirium and dementia: the importance of delirium prevention. Nat Rev Neurol. 2022;18(10):579–96. https://doi.org/10.1038/s41582-022-00698-7. Epub 2022 Aug 26.

    Article  PubMed  PubMed Central  Google Scholar 

  23. Dilmen OK, Meco BC, Evered LA, Radtke FM. Postoperative neurocognitive disorders: a clinical guide. J Clin Anesth. 2024;92:111320. https://doi.org/10.1016/j.jclinane.2023.111320. Epub 2023 Nov 8.

    Article  PubMed  Google Scholar 

  24. Sumner M, Deng C, Evered L, Frampton C, Leslie K, Short T, et al. Processed electroencephalography-guided general anaesthesia to reduce postoperative delirium: a systematic review and meta-analysis. Br J Anaesth. 2023;130(2):e243–53. https://doi.org/10.1016/j.bja.2022.01.006. Epub 2022 Feb 17.

    Article  PubMed  Google Scholar 

  25. Pérez-Otal B, Aragón-Benedí C, Pascual-Bellosta A, Ortega-Lucea S, Martínez- Ubieto J, Ramírez-Rodríguez JM. Neuromonitoring depth of anesthesia and its association with postoperative delirium. Sci Rep. 2022;12(1):12703. https://doi.org/10.1038/s41598-022-16466-y.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  26. Yang S, **ao W, Wu H, Liu Y, Feng S, Lu J, et al. Management based on Multimodal Brain Monitoring May improve functional connectivity and post- operative Neurocognition in Elderly patients undergoing spinal surgery. Front Aging Neurosci. 2021;13:705287. https://doi.org/10.3389/fnagi.2021.705287.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  27. Xu N, Li LX, Wang TL, Jiao LQ, Hua Y, Yao DX, et al. Processed multiparameter electroencephalogram-guided General Anesthesia Management can reduce postoperative delirium following carotid endarterectomy: a Randomized Clinical Trial. Front Neurol. 2021;12:666814. https://doi.org/10.3389/fneur.2021.666814.

    Article  PubMed  PubMed Central  Google Scholar 

  28. Vacas S, Canales C, Deiner SG, Cole DJ. Perioperative Brain Health in the older adult: a patient safety imperative. Anesth Analg. 2022;135(2):316–28. https://doi.org/10.1213/ANE.0000000000006090. Epub 2022 May 18.

    Article  PubMed  PubMed Central  Google Scholar 

  29. Aldecoa C, Bettelli G, Bilotta F, Sanders RD, Aceto P, Audisio R, et al. Update of the European Society of Anaesthesiology and Intensive Care Medicine evidence-based and consensus-based guideline on postoperative delirium in adult patients. Eur J Anaesthesiol. 2024;41(2):81–108. https://doi.org/10.1097/EJA.0000000000001876. Epub 2023 Aug 30.

    Article  PubMed  Google Scholar 

  30. Hughes CG, Boncyk CS, Culley DJ, Fleisher LA, Leung JM, McDonagh DL, et al. American Society for Enhanced Recovery and Perioperative Quality Initiative Joint Consensus Statement on Postoperative Delirium Prevention. Anesth Analg. 2020;130(6):1572–90. https://doi.org/10.1213/ANE.0000000000004641.

    Article  PubMed  PubMed Central  Google Scholar 

  31. Pandit JJ, Cook TM, Jonker WR, O’Sullivan E. 5th National Audit Project (NAP5) of the Royal College of Anaesthetists and the Association of Anaesthetists of Great Britain and Ireland. A national survey of anaesthetists (NAP5 baseline) to estimate an annual incidence of accidental awareness during general anaesthesia in the UK. Anaesthesia. 2013;68(4):343–53. https://doi.org/10.1111/anae.12190.

    Article  CAS  PubMed  Google Scholar 

  32. Coeckelenbergh S, Richebé P, Longrois D, Joosten A, De Hert S. Current trends in anesthetic depth and antinociception monitoring: an international survey. J Clin Monit Comput. 2022;36(5):1407–22. https://doi.org/10.1007/s10877-021-00781-2. Epub 2021 Nov 26.

    Article  PubMed  Google Scholar 

  33. Papangelou A, Abramowicz E. May. The EEG story: Current perceptions in the World of Neuroanesthesiology. ASA Monitor; 2023; 87:32–33 https://doi.org/10.1097/01.ASM.0000935332.13726.ce.

  34. Aasheim A, Rosseland LA, Leonardsen ACL, Romundstad L. Depth of anesthesia monitoring in Norway – a web-based survey. Acta Anaesthesiol Scand 2024 Mar 29 https://doi.org/10.1111/aas.14420. Online ahead of print.

  35. Pandit JJ, Andrade J, Bogod DG, Hitchman JM, et al. 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia:summary of main findings and risk factors. Br J Anaesth. 2014;113(4):549–59. https://doi.org/10.1093/bja/aeu313.

    Article  CAS  PubMed  Google Scholar 

  36. Kim MC, Fricchione GL, Akeju O. Accidental awareness under general anaesthesia: incidence, risk factors and psychological management. BJA Educ. 2021;21(4):154–61. https://doi.org/10.1016/j.bjae.2020.12.001.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  37. Ghoneim MM, Block RI, Haffarnan M, Mathews MJ. Awareness during anesthesia: risk factors, causes and sequelae: a review of reported cases in the literature. Anesth Analg. 2009;108(2):527–35. https://doi.org/10.1213/ane.0b013e318193c634.

    Article  PubMed  Google Scholar 

  38. Chen H, Mo L, Hu H, Ou Y, Luo J. Risk factors of postoperative delirium after cardiac surgery: a meta-analysis. J Cardiothorac Surg. 2021;16(1):113. https://doi.org/10.1186/s13019-021-01496-w.

    Article  PubMed  PubMed Central  Google Scholar 

  39. van Harten AE, Scheeren TW, Absalom AR. A review of postoperative cognitive dysfunction and neuroinflammation associated with cardiac surgery and anaesthesia. Anaesthesia. 2012;67(3):280–93. https://doi.org/10.1111/j.1365-2044.2011.07008.x.

    Article  PubMed  Google Scholar 

  40. Milne B, Gilbey T, Gautel L, Kunst G. Neuromonitoring and neurocognitive outcomes in cardiac surgery: a narrative review. J Cardiothorac Vasc Anesth. 2022;36(7):2098–113. https://doi.org/10.1053/j.jvca.2021.07.029.

    Article  PubMed  Google Scholar 

  41. Hovens IB, van Leeuwen BL, Mariani MA, Kraneveld AD, Schoemaker RG. Postoperative cognitive dysfunction and neuroinflammation; cardiac surgery and abdominal surgery are not the same. Brain Behav Immun. 2016;54:178–93. https://doi.org/10.1016/j.bbi.2016.02.003.

    Article  CAS  PubMed  Google Scholar 

  42. Aranake A, Mashour GA, Avidan MS. Minimum alveolar concentration:ongoing relevance and clinical utility. Anaesthesia. 2013;68(5):512–22. https://doi.org/10.1111/anae.12168.

    Article  CAS  PubMed  Google Scholar 

  43. Chortkoff BS, Eger EI 2nd, Crankshaw DP, Gonsowski CT, et al. Concentrations of desflurane and propofol that suppress response to command in humans. Anesth Analg. 1995;81(4):737–43. https://doi.org/10.1097/00000539-199510000-00014.

  44. Carpenter RL, Eger EI 2. nd. Alveolar-to-arterial-to-venous anesthetic partial pressure differences in humans. Anesthesiology. 1898;70(4):630-5. doi:10-1097/00000542-198904000-00014.

  45. Acharya NK, Goldwaser EL, Forsberg MM, Godsey GA et al. Sevoflurane and isoflurane induce structural changes in brain vascular endothelial cells and increase blood-brain barrier permeability: possible link to postoperative delirium and cognitive decline. Brain Res 2015 Sep 16:1620:29–41. https://doi.org/10.1016/j.brainres.2015.04.054.

  46. Yang S, Gu C, Mandeville ET, Dong Y, et al. Anesthesia and surgery impair blood-barrier and cognitive function in mice. Front Immunol. 2017;8:902. https://doi.org/10.3389/fimmu.2017.00902.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  47. Jacob Z, Li H, Makaryus R, Zhang S, et al. Metabolomic profiling of children’s brain undergoing general anesthesia with sevoflurane and propofol. Anesthesiology. 2012;117(5):1062–71. https://doi.org/10.1097/ALN.0b013e31826be417.

    Article  CAS  PubMed  Google Scholar 

Download references

Funding

Not applicable.

Author information

Authors and Affiliations

Authors

Contributions

ZM, FAL and ML designed the Quality Improvement Project ZM and JM collected the data ZM, FAL and ML wrote the main manuscript text JM organized the References. All the authors reviewed and approved the manuscript.

Corresponding author

Correspondence to Francisco A Lobo.

Ethics declarations

Ethical approval

Francisco A Lobo is the Editor-in-Chief of the Journal of Clinical Monitoring and Computing ; he had no interference and access to the Editorial Review Process. Massimo Lamperti is member of the General Editorial Board of the Journal of Clinical Monitoring and Computing; he had no interference and access to the Editorial Review Process. As Quality Improvement Project, it was waived from Research Ethics Committee approval per the Institutional research guidelines.

Consent to publish

Not applicable.

Competing interests

The authors declare no competing interests.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Moaiyeri, Z., Mustafa, J., Lamperti, M. et al. Intraoperative use of processed electroencephalogram in a quaternary center: a quality improvement audit. J Clin Monit Comput (2024). https://doi.org/10.1007/s10877-024-01189-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10877-024-01189-4

Keywords

Navigation