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The Effects of Different Anesthetics on the Brain's Neural Networks

8. juni 2026 opdateret af: Jun Zhang, Fudan University

Propofol, Dexmedetomidine, and Esketamine-Induced Unresponsive States: Alterations in Information Integration and Brain Networks

This study aims to analyze the electroencephalographic power spectrum and connectivity during unresponsive states induced by propofol, esketamine and dexmedetomidine, respectively. It intends to explore the macro neural mechanisms underlying anesthetic unresponsiveness, so as to further elucidate the mechanisms by which anesthetics induce loss and recovery of consciousness. In addition, this study will identify neural biomarkers under general anesthesia for monitoring patients' actual intraoperative consciousness status. The findings will facilitate the development of monitoring indicators and devices reflecting intraoperative consciousness during general anesthesia, enabling more accurate assessment of patients' intraoperative consciousness status.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

120

Fase

  • Fase 4

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Kina
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Kina, 200032
        • Fudan University Shanghai Cancer Center
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Patients scheduled for elective non-cardiac surgery;
  • American Society of Anesthesiologists (ASA) physical status classification I-II;
  • Aged 18 to 65 years, regardless of gender;
  • Body mass index (BMI) greater than 18 kg/m² and no more than 31 kg/m²;
  • Written informed consent voluntarily signed by the patient or legal authorized representative for participation in this study.

Exclusion Criteria:

Subjects meeting any one of the following items will be excluded from this study:

  • Presence of severe cardiovascular diseases or hepatic and renal insufficiency;
  • Hearing impairment;
  • History of psychiatric disorders or communication disorders;
  • Anticipated difficult airway;
  • Pregnant or lactating women;
  • History of allergic reaction or contraindication to any of the three anesthetic drugs used in this trial;
  • Participation in other clinical trials within the past 3 months.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: propofol group
All patients in this arm receive Propofol at a concentration of 10 mg/mL, administered via infusion at a dose of 1 mg/kg and completed within 5 minutes.
Medicin: propofol
All patients in this arm receive Propofol at a concentration of 10 mg/mL, administered via infusion at a dose of 1 mg/kg and completed within 5 minutes.
Eksperimentel: Dexmedetomidine group
All subjects in this arm receive Dexmedetomidine with a prepared concentration of 10 μg/mL. A loading dose of 1.0 μg/kg is administered by infusion and completed within 10 minutes.
Medicin: Dexmeditomidine
All subjects in this arm receive Dexmedetomidine with a prepared concentration of 10 μg/mL. A loading dose of 1.0 μg/kg is administered by infusion and completed within 10 minutes.
Eksperimentel: Esketamine group
All subjects in this arm are given Esketamine at a prepared concentration of 5 mg/mL, infused at a dose of 0.5 mg/kg and completed within 10 minutes.
Medicin: Esketamine
All subjects in this arm are given Esketamine at a prepared concentration of 5 mg/mL, infused at a dose of 0.5 mg/kg and completed within 10 minutes.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Permutation cross mutual information (PCMI) and PCMI-based brain networks
Tidsramme: From baseline (awake) through loss of responsiveness to recovery of responsiveness
EEG power spectrum [broadband (0.1-45 Hz) and sub-band frequencies] assessed by high-density EEG
From baseline (awake) through loss of responsiveness to recovery of responsiveness
EEG functional connectivity
Tidsramme: From baseline (awake) through loss of responsiveness to recovery of responsiveness
EEG functional connectivity assessed by high-density EEG
From baseline (awake) through loss of responsiveness to recovery of responsiveness

Sekundære resultatmål

Resultatmål
Tidsramme
Blodtryk
Tidsramme: Perioperativ
Perioperativ
heart rate
Tidsramme: Perioperative
Perioperative
Oxygen Saturation
Tidsramme: Perioperative
Perioperative
Time to loss of responsiveness after study drug initiation
Tidsramme: From start of study drug infusion until loss of responsiveness
From start of study drug infusion until loss of responsiveness

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Fudan University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

9. juni 2026

Primær færdiggørelse (Anslået)

31. august 2026

Studieafslutning (Anslået)

10. september 2026

Datoer for studieregistrering

Først indsendt

14. maj 2026

Først indsendt, der opfyldte QC-kriterier

8. juni 2026

Først opslået (Faktiske)

12. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

12. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2026-203-5055

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

De-identified individual participant data including demographic characteristics, baseline clinical information, perioperative vital sign data, anesthesia induction and recovery related data, EEG analysis results, and adverse event records will be shared.

IPD-delingstidsramme

Available starting from 1 year after study completion, and will be kept available for at least 5 years thereafter.

IPD-delingsadgangskriterier

Only qualified researchers conducting independent academic research may access the de-identified IPD and supporting study documents, including study protocol, statistical analysis plan, and clinical research raw data. Access can be requested by submitting a formal research application to the corresponding author via official email, and access will be granted after formal review and approval.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • CSR

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Studerer et amerikansk FDA-reguleret enhedsprodukt

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Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Anæstesi

Kliniske forsøg med propofol

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Betingelser

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Kosttilskud

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