Neuromonitoring during general anesthesia in non-neurologic surgery

Area of Science:

• Anesthesiology and Perioperative Medicine
• Neuroscience
• Critical Care Medicine

Background:

• Cerebral complications like cognitive dysfunction, delirium, and stroke are frequent in perioperative settings, even during non-neurosurgical procedures.
• Maintaining hemodynamic and respiratory stability is crucial for minimizing neurological complications during surgery.
• Neuromonitoring is increasingly recognized for its potential to improve patient outcomes in non-neurosurgical populations.

Purpose of the Study:

• To review the role of noninvasive neuromonitoring techniques in perioperative settings for non-neurosurgical interventions.
• To discuss the application and benefits of electroencephalography (EEG), near-infrared spectroscopy (NIRS), and Transcranial Doppler in optimizing anesthetic management.
• To evaluate the advantages, disadvantages, and limitations of each neuromonitoring modality.

Main Methods:

• Review of noninvasive neuromonitoring techniques including electroencephalography (EEG)-based methods (EEG, Entropy, Bispectral Index, Narcotrend), near-infrared spectroscopy (NIRS), and Transcranial Doppler.
• Analysis of the application of these techniques in perioperative settings for non-neurosurgical procedures.
• Assessment of the potential of multimodal neuromonitoring to reduce adverse neurological events and optimize anesthetic drug administration.

Main Results:

• Noninvasive neuromonitoring, including EEG, NIRS, and Transcranial Doppler, offers valuable insights into brain activity and homeostasis during surgery.
• These techniques can aid in optimizing sedation and analgesia, ensuring hemodynamic and respiratory stability, and potentially reducing postoperative neurological complications.
• Multimodal neuromonitoring allows for a comprehensive assessment of brain function, moving towards evidence-based protocols as standard care.

Conclusions:

• Neuromonitoring is essential for managing perioperative neurological complications in non-neurosurgical patients.
• EEG, NIRS, and Transcranial Doppler are key noninvasive tools that can enhance patient safety and anesthetic management.
• Integrating multimodal neuromonitoring into standard perioperative care protocols is recommended to improve outcomes and minimize neurological risks.