Evidence map›Paper›PMID 25264892›Full record

ArticlePloS one2014

Electroencephalographic variation during end maintenance and emergence from surgical anesthesia.

Divya Chander, Paul S García, Jono N MacColl, Sam Illing, Jamie W Sleigh

Registry-linked trialAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07533370 (Extended Emergence Trajectory on Post-Anesthesia Care Units Events in Ambulatory Lower-Extremity Orthopedic Surgery), which is not on this map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07533370 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Extended Emergence Trajectory on Post-Anesthesia Care Units Events in Ambulatory Lower-Extremity Orthopedic Surgery: A Randomized Controlled Trial

TypeinterventionalSponsorHarrison Shong-Wen ChowRan2026 to 2027Enrolled300ConditionsPerioperative Care, EEG Power Spectra, Delirium - PostoperativeArmsStandard of Care EEG-Guided Emergence, Extended EEG Emergence Trajectory
3 · Its place in the literature

Who cites it

62 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
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  10. Hormonal basis of sex differences in anesthetic sensitivity.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Weakly Correlated Local Cortical State Switches under Anesthesia Lead to Strongly Correlated Global States.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  19. Article
  20. Consciousness is supported by near-critical slow cortical electrodynamics.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article

2 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Divya ChanderDepartment of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California, United States of America.
Paul S GarcíaDepartment of Anesthesiology, Atlanta VA Medical Center/Emory University, Atlanta, Georgia, United States of America.
Jono N MacCollDepartment of Anaesthesia, Waikato Clinical School, University of Auckland, Hamilton, New Zealand.
Sam IllingDepartment of Anaesthesia, Waikato Clinical School, University of Auckland, Hamilton, New Zealand.
Jamie W SleighDepartment of Anaesthesia, Waikato Clinical School, University of Auckland, Hamilton, New Zealand.

Funding

Effects of Antiretrovirals on Neuronal Health: Screening ARVs for NeurotoxicityIK2BX001677 · VA · VETERANS HEALTH ADMINISTRATION · PI GARCIA, PAUL S · 2014 to 2018
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BLRD VA IK2 BX001677
6 · The paper itself

Abstract

The re-establishment of conscious awareness after discontinuing general anesthesia has often been assumed to be the inverse of loss of consciousness. This is despite the obvious asymmetry in the initiation and termination of natural sleep. In order to characterize the restoration of consciousness after surgery, we recorded frontal electroencephalograph (EEG) from 100 patients in the operating room during maintenance and emergence from general anesthesia. We have defined, for the first time, 4 steady-state patterns of anesthetic maintenance based on the relative EEG power in the slow-wave (<14 Hz) frequency bands that dominate sleep and anesthesia. Unlike single-drug experiments performed in healthy volunteers, we found that surgical patients exhibited greater electroencephalographic heterogeneity while re-establishing conscious awareness after drug discontinuation. Moreover, these emergence patterns could be broadly grouped according to the duration and rapidity of transitions amongst these slow-wave dominated brain states that precede awakening. Most patients progressed gradually from a pattern characterized by strong peaks of delta (0.5-4 Hz) and alpha/spindle (8-14 Hz) power ('Slow-Wave Anesthesia') to a state marked by low delta-spindle power ('Non Slow-Wave Anesthesia') before awakening. However, 31% of patients transitioned abruptly from Slow-Wave Anesthesia to waking; they were also more likely to express pain in the post-operative period. Our results, based on sleep-staging classification, provide the first systematized nomenclature for tracking brain states under general anesthesia from maintenance to emergence, and suggest that these transitions may correlate with post-operative outcomes such as pain.

Indexed as

Anesthesia, GeneralElectroencephalographySurgical Procedures, OperativeConsciousnessHumans

Identifiers

PMID25264892
PMCPMC4180055

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.