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Related Experiment Video

Updated: Sep 29, 2025

Improved Home Blood Pressure Control by CT-guided Ozone-mediated Renal Denervation for Patients with Resistant Hypertension
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Targeted Interventions to Increase Blood Pressure and Decrease Anaesthetic Concentrations Reduce Intraoperative Burst

Marie-Therese Georgii1, Matthias Kreuzer1, Antonia Fleischmann1

  • 1Department of Anaesthesia and Intensive Care, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.

Frontiers in Systems Neuroscience
|March 21, 2022
PubMed
Summary
This summary is machine-generated.

Targeted anesthetic interventions, including managing blood pressure and anesthetic levels, effectively reduced intraoperative electroencephalographic burst suppression in elderly patients. This suggests cerebral hypoperfusion may cause burst suppression during anesthesia.

Keywords:
Burst Suppression Rateanaesthetic interventionelectroencephalographyentropyintraoperative neuromonitoring

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Area of Science:

  • Anesthesiology
  • Neuroscience
  • Geriatric Medicine

Background:

  • Intraoperative electroencephalographic (EEG) burst suppression (BSupp) is linked to post-operative neurocognitive disorders in the elderly.
  • EEG-guided anesthesia may reduce BSupp, but understanding its mechanisms and standard treatments is lacking.
  • This study investigates cerebral hypoperfusion and anesthetic overdose as potential causes of BSupp.

Purpose of the Study:

  • To demonstrate that targeted anesthetic interventions reduce BSupp.
  • To investigate the roles of intraoperative hypotension and anesthetic concentration in BSupp.

Main Methods:

  • Randomized controlled trial comparing EEG-based interventions with standard anesthesia.
  • Interventions included adjusting mean arterial blood pressure (MAP) and anesthetic concentration if BSupp (BSR > 0) was detected.
  • Patients received either EEG-guided or EEG-blinded anesthesia.

Main Results:

  • EEG-based intervention significantly reduced total cumulative BSR, duration, and maximum BSR.
  • MAP intervention increased MAP and significantly decreased maximum BSR, often to 0% without further action.
  • Additional anesthetic concentration reduction (MAC intervention) was needed in some cases.

Conclusions:

  • Targeted interventions (MAC/MAP) effectively reduce BSupp in elderly patients undergoing general anesthesia.
  • Hemodynamic intervention (MAP) alone interrupted or reduced BSupp, supporting the hypothesis that hypotension-induced cerebral hypoperfusion is a potential pathomechanism.
  • This study provides evidence for managing BSupp through targeted anesthetic and hemodynamic strategies.