- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT06813703
Analyse af den smertestillende mekanisme for titus-WAA under ikke-anæstetiseret koloskopi ved hjælp af EEG-FNIRS-systemet
Analyse af den smertestillende mekanisme for transkutan elektrisk nervestimulering baseret på akupunkturteori i håndledsankle under ikke-anæstetiseret koloskopi ved hjælp af elektroencefalogramfunktionel infrarød spektroskopisystem
Studieoversigt
Status
Intervention / Behandling
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Shanghai Municipality
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Shanghai, Shanghai Municipality, Kina, 200433
- The First Affiliated Hospital of Naval Medical University
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inkluderingskriterier:
- Patienter, der gennemgår usedateret koloskopi, er berettigede til optagelse i denne undersøgelse.
- 18 til 75 år.
- Opfylder kravene til koloskopi med god kardiopulmonal funktion og stabile vitale tegn.
- En pre-procedural visuel analog skala (VAS) smerter score på mindre end 3.
Ekskluderingskriterier:
- Deltagere med tale eller kognitive svækkelser.
- Dem med akut anal- eller rektal stenose, akutte perianale eller rektale infektioner, akut diverticulitis eller aktiv inflammatorisk tarmsygdom.
- Kvinder, der menstruerer, gravide eller amning.
- Patienter med aktiv tuberkulose, hæmofili eller avancerede maligne tumorer.
- Personer med sensoriske forstyrrelser, implanterede pacemakere eller defibrillatorer eller ankelhudesår.
- De, der har brugt beroligende midler eller smertestillende midler, enten langvarige eller inden for det sidste 24 timer.
- Personer med enhver betingelse, der forstyrrer EEG-FNIRS-signal erhvervelse, såsom kraniale abnormiteter, implanteret metal- eller elektroniske anordninger, epilepsi eller neurologiske lidelser.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Eksperimentel: Elektrisk stimuleringsgruppe
I henhold til WAA -teorien er den valgte nedre zone 1 (LZ1) og nedre zone 2 (LZ2) defineret som følger: LZ1 er placeret mellem den mediale Achilles -sen og den mediale malleolus, mens LZ2 er placeret ved den centrale indre kant af Ankelled, nær den bageste grænse af skinnebenet.
To elektrodepuder vil blive placeret på hver LZ1 og LZ2 af begge ben, i alt otte elektrodepuder.
TENS-WAA-enheden indstilles til en frekvens på 2 Hz, en pulsbredde på 500 μs og en kontinuerlig bølgeform.
Deltagere i stimuleringsgruppen vil modtage elektriske strømme ved deres maksimale acceptable intensitet under smertestærsklen.
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I den elektriske stimuleringsgruppe vil enhedens nuværende intensitet blive justeret til den maksimale tolerance under deltagerens smertetærskel, mens den nuværende intensitet i kontrolgruppen i kontrolgruppen indstilles til minimum.
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Placebo komparator: kontrolgruppe
Deltagere i kontrolgruppen vil have elektroderne placeret i de samme positioner som dem i stimuleringsgruppen med identisk elektrisk stimuleringsfrekvens og pulsbreddeindstillinger.
Imidlertid indstilles den aktuelle intensitet til det mindste niveau.
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I den elektriske stimuleringsgruppe vil enhedens nuværende intensitet blive justeret til den maksimale tolerance under deltagerens smertetærskel, mens den nuværende intensitet i kontrolgruppen i kontrolgruppen indstilles til minimum.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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EEG-fNIRS Neurovascular Coupling Peak β Coefficient
Tidsramme: During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified analysis window for each stage.
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Neurovascular coupling is quantified from synchronized electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) recordings.
EEG activity is decomposed into predefined delta, theta, alpha, and beta frequency bands, and band-specific power envelopes are coupled with fNIRS-derived oxygenated haemoglobin (HbO) signals within predefined cortical regions of interest.
A 10-second lag is applied to account for the delayed haemodynamic response following neural activity.
Coupling is estimated using a general linear model.
The peak β coefficient within the predefined analysis window is used to quantify maximum EEG-fNIRS neurovascular coupling strength.
Values are calculated separately for the predefined frequency bands and cortical regions of interest and compared between the distal transcutaneous electrical nerve stimulation and sham stimulation groups.
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During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified analysis window for each stage.
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EEG-fNIRS Neurovascular Coupling β Area Under the Curve
Tidsramme: During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified analysis window for each stage.
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Neurovascular coupling is quantified from synchronized electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) recordings.
EEG activity is decomposed into predefined delta, theta, alpha, and beta frequency bands, and band-specific power envelopes are coupled with fNIRS-derived oxygenated haemoglobin (HbO) signals within predefined cortical regions of interest.
A 10-second lag is applied to account for the delayed haemodynamic response following neural activity.
Coupling is estimated using a general linear model.
The area under the β-coefficient curve (β AUC) within the predefined analysis window is used to quantify cumulative EEG-fNIRS neurovascular coupling strength over time.
Values are calculated separately for the predefined frequency bands and cortical regions of interest and compared between the distal transcutaneous electrical nerve stimulation and sham stimulation groups.
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During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified analysis window for each stage.
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Kolonoskopi tid
Tidsramme: Under proceduren (den samlede tid til at nå de tre bøjninger og til ileocecal -ventilen og for hele undersøgelsen blev registreret)
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Under proceduren (den samlede tid til at nå de tre bøjninger og til ileocecal -ventilen og for hele undersøgelsen blev registreret)
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Pain VAS score
Tidsramme: During colonoscopy, when the endoscope passes through the rectosigmoid junction, splenic flexure, and hepatic flexure.
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Pain intensity is assessed using a 10-cm Visual Analog Scale (VAS), ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain.
Participants report their pain intensity at three predefined procedural stages during colonoscopy: passage of the endoscope through the rectosigmoid junction, splenic flexure, and hepatic flexure.
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During colonoscopy, when the endoscope passes through the rectosigmoid junction, splenic flexure, and hepatic flexure.
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EEG-Derived Cortical Neural Activity
Tidsramme: During colonoscopy at predefined procedural stages, including anal intubation, splenic flexure, hepatic flexure, and ileocecal valve.
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Cortical neural activity is assessed using electroencephalography (EEG) during predefined stages of colonoscopy.
After signal preprocessing and artefact removal, EEG activity is analysed in four predefined frequency bands: delta, theta, alpha, and beta.
Outcome measures include relative spectral power, reflecting frequency-specific cortical activity, and pairwise EEG coherence, reflecting functional synchronization between cortical regions.
Stage-specific changes relative to the corresponding resting-state reference and between-group differences are evaluated to characterize alterations in cortical neural activity and network organization associated with procedural visceral pain and distal transcutaneous electrical nerve stimulation.
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During colonoscopy at predefined procedural stages, including anal intubation, splenic flexure, hepatic flexure, and ileocecal valve.
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fNIRS-Derived HbO Cortical Activation
Tidsramme: During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified post-event analysis window for each stage.
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Cortical activation is assessed using oxygenated haemoglobin (HbO) signals recorded by functional near-infrared spectroscopy (fNIRS).
Event-related HbO responses are analysed using a general linear model within prespecified post-event time windows.
Channel-wise β coefficients are estimated relative to position-matched resting-state recordings and are used to quantify the magnitude and direction of cortical HbO activation.
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During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified post-event analysis window for each stage.
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fNIRS-Derived HbR Cortical Activation
Tidsramme: During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified post-event analysis window for each stage.
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Cortical activation is assessed using deoxygenated haemoglobin (HbR) signals recorded by functional near-infrared spectroscopy (fNIRS).
Event-related HbR responses are analysed using a general linear model within prespecified post-event time windows.
Channel-wise β coefficients are estimated relative to position-matched resting-state recordings and are used to quantify the magnitude and direction of cortical HbR activation.
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During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation, within the prespecified post-event analysis window for each stage.
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fNIRS-Derived Cortical Functional Connectivity
Tidsramme: During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation.
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Cortical functional connectivity is assessed from fNIRS signals during predefined stages of colonoscopy.
Functional connectivity between prespecified fNIRS channels or cortical regions is quantified using pairwise correlation coefficients to characterize stage-specific changes in cortical haemodynamic network organization.
Connectivity measures are compared between the distal transcutaneous electrical nerve stimulation and control conditions.
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During colonoscopy, at predefined procedural stages including anal intubation, splenic flexure, hepatic flexure, and cecal intubation.
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Samarbejdspartnere og efterforskere
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- CHEC2025-006
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
De-identificerede individuelle deltagerdata (IPD), der vil blive delt, inkluderer:
Demografisk information (alder, køn, koloskopihistorie)
Gruppetildeling (titalls-WAA eller skamstimulering)
Pain Visual Analogue Scale (VAS) score på nøgle tidspunkter
EEG og FNIRS RAW og forbehandlede data indsamlet før, under og efter koloskopi
Procedurens varighed og tidspunkter for begivenheder (f.eks. At nå leverfleksure, miltbøjning, ileocecal ventil)
Relevante kliniske resultater (f.eks. Bivirkninger, procedurerafslutningsstatus) Dataene vil være tilgængelige fra den tilsvarende forfatter efter rimelig anmodning, efter offentliggørelse af de vigtigste resultater og med en underskrevet datatilgangsaftale. Ingen data, der direkte kunne identificere individuelle deltagere, vil blive delt.
IPD-delingstidsramme
IPD-delingsadgangskriterier
IPD-deling Understøttende informationstype
- STUDY_PROTOCOL
- SAP
- ANALYTIC_CODE
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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produkt fremstillet i og eksporteret fra U.S.A.
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