Evidence map›Paper›PMID 26118489›Full record

Observational studyClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology2016

Nitrous oxide-induced slow and delta oscillations.

Kara J Pavone, Oluwaseun Akeju, Aaron L Sampson, Kelly Ling, Patrick L Purdon, Emery N Brown

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.

  1. Pooled it
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  4. Ketamine can produce oscillatory dynamics by engaging mechanisms dependent on the kinetics of NMDA receptors.Proceedings of the National Academy of Sciences of the United States of America · 2024
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  16. Drug-Specific Models Improve the Performance of an EEG-based Automated Brain-State Prediction System.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2019
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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

6 authors at 2 institutions in 1 country.

Kara J PavoneDepartment of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA.
Oluwaseun AkejuDepartment of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA; Department of Anaesthesia, Harvard Medical School, Boston, MA, USA.
Aaron L SampsonDepartment of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA.
Kelly LingDepartment of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA.
Patrick L PurdonDepartment of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA; Department of Anaesthesia, Harvard Medical School, Boston, MA, USA.
Emery N BrownDepartment of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, USA; Department of Anaesthesia, Harvard Medical School, Boston, MA, USA; Department of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA, USA; Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA; Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA. Electronic address: enb@neurostat.mit.edu.
Massachusetts General Hospital · USHarvard University · US

Funding

Dynamic Signal Processing Analyses of Neural PlasticityR01DA015644 · NIDA · MASSACHUSETTS GENERAL HOSPITAL · PI BROWN, EMERY N. · 2002 to 2006
$5.4M
Redesigning General Anesthesia (Admin Supp)R01GM104948 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI BOYDEN, EDWARD S., BROWN, EMERY N · 2012 to 2016
$4.4M
A Systems Neuroscience Approach for the Study of General AnesthesiaDP1OD003646 · OD · MASSACHUSETTS GENERAL HOSPITAL · PI BROWN, EMERY N · 2007 to 2011
$4.4M
A Neural Systems Approach to Monitoring and Drug-Delivery for General AnesthesiaDP2OD006454 · OD · MASSACHUSETTS GENERAL HOSPITAL · PI PURDON, PATRICK L. · 2009 to 2009
$2.7M
STATISTICAL MODELING OF NEURAL INFORMATION ENCODINGK02MH061637 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI BROWN, EMERY NEAL · 2000 to 2003
$494k
NIDA NIH HHS R01 DA015644NIGMS NIH HHS R01 GM104948NIGMS NIH HHS TR01-GM104948NIH HHS DP1 OD003646NIH HHS DP1-OD003646NIH HHS DP2 OD006454NIH HHS DP2-OD006454NIMH NIH HHS K02 MH061637
6 · The paper itself

Abstract

objectivesSwitching from maintenance of general anesthesia with an ether anesthetic to maintenance with high-dose (concentration >50% and total gas flow rate >4 liters per minute) nitrous oxide is a common practice used to facilitate emergence from general anesthesia. The transition from the ether anesthetic to nitrous oxide is associated with a switch in the putative mechanisms and sites of anesthetic action. We investigated whether there is an electroencephalogram (EEG) marker of this transition.

methodsWe retrospectively studied the ether anesthetic to nitrous oxide transition in 19 patients with EEG monitoring receiving general anesthesia using the ether anesthetic sevoflurane combined with oxygen and air.

resultsFollowing the transition to nitrous oxide, the alpha (8-12 Hz) oscillations associated with sevoflurane dissipated within 3-12 min (median 6 min) and were replaced by highly coherent large-amplitude slow-delta (0.1-4 Hz) oscillations that persisted for 2-12 min (median 3 min).

conclusionsAdministration of high-dose nitrous oxide is associated with transient, large amplitude slow-delta oscillations. SIGNIFICANCE: We postulate that these slow-delta oscillations may result from nitrous oxide-induced blockade of major excitatory inputs (NMDA glutamate projections) from the brainstem (parabrachial nucleus and medial pontine reticular formation) to the thalamus and cortex. This EEG signature of high-dose nitrous oxide may offer new insights into brain states during general anesthesia.

Indexed as

Anesthesia, GeneralAnesthesia, InhalationAdultAgedDelta RhythmElectroencephalographyFemaleHumansMaleMiddle AgedNitrous OxideRetrospective StudiesYoung AdultNitrous OxideEEGGeneral anesthesiaNMDA-receptor blockadeParabrachial nucleusSlow waves

Identifiers

PMID26118489
PMCPMC4675698
OpenAlexW625539671

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.