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The ED95 of Ciprofol for Laryngeal Mask Airway Insertion With Fentanyl in Children: A Biased-Coin Dose-Finding Trial

10 juli 2026 bijgewerkt door: Wei Mei, Huazhong University of Science and Technology
Ciprofol is a novel intravenous anesthetic with a pharmacological profile similar to propofol but with a lower incidence of injection pain, hypotension, and respiratory depression. For pediatric day-case surgeries, laryngeal mask airway (LMA) insertion without neuromuscular blockers is increasingly preferred. While opioids are often combined with hypnotics to optimize insertion conditions, the optimal bolus dose of ciprofol when co-administered with a standard dose of fentanyl for LMA insertion in children remains unknown. This study aims to determine the 95% effective dose (ED95) of a single intravenous bolus of ciprofol, combined with a fixed dose of fentanyl (1 μg/kg), for successful LMA insertion in children aged 1-12 years during general anesthesia induction.

Studie Overzicht

Gedetailleerde beschrijving

This is a prospective, single-blind (participant and outcomes assessor-blinded), biased-coin design up-and-down sequential allocation trial. A total of 180 pediatric patients (ASA I-II) scheduled for elective surgery requiring LMA insertion will be enrolled and divided into three age groups: toddlers (1-3 years), preschoolers (4-6 years), and school-age children (7-12 years), with 60 patients per group.

All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol, administered intravenously over 1 minute. The initial ciprofol dose is set at 0.35 mg/kg, with a dose step size of 0.1 mg/kg. The dose for each subsequent patient is determined by the biased-coin design: if the previous patient achieves successful LMA insertion (no movement), the next patient receives the same dose with a probability of 0.947 or a 0.1 mg/kg lower dose with a probability of 0.053. If the previous patient fails (movement occurs), the next patient receives a 0.1 mg/kg higher dose.

The study employs a single-blind design: the anesthesiologist who administers the study drug is aware of the ciprofol dose, whereas the anesthesiologist who performs the LMA insertion and the observer who evaluates the patient's response are both blinded to the dose assignment. LMA insertion will be attempted 90 seconds after drug administration. Successful insertion is defined as the absence of jaw tightness, gross purposeful movement, coughing, gagging, or laryngospasm during LMA insertion and cuff inflation. The primary outcome is the ED95 of ciprofol for successful LMA insertion in each age group, estimated using isotonic regression with bootstrap resampling.

Studietype

Ingrijpend

Inschrijving (Geschat)

180

Fase

  • Fase 4

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Kind

Accepteert gezonde vrijwilligers

Nee

Beschrijving

Inclusion Criteria:

  • American Society of Anesthesiologists (ASA) physical status I or II
  • Aged 1 to 12 years
  • Scheduled for elective surgery requiring general anesthesia with laryngeal mask airway (LMA) insertion (e.g., ophthalmic surgery, skin lesion excision, minor abdominal or urological procedures, with expected surgical duration ≤ 2 hours)
  • Written informed consent obtained from parents or legal guardians

Exclusion Criteria:

  • Known allergy or hypersensitivity to ciprofol, fentanyl, or any study-related drugs
  • Intellectual disability, cognitive-affective disorders, psychiatric or neurological diseases
  • Inability to cooperate with peripheral intravenous cannulation
  • History of reactive airway disease or suspected difficult airway
  • Body mass index (BMI) ≥ 30 kg/m² or ≤ 15 kg/m²
  • History of sedative medication use
  • Inability to understand the study protocol or participation in another clinical trial within the past 30 days

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Niet-gerandomiseerd
  • Interventioneel model: Opdracht voor een enkele groep
  • Masker: Verdrievoudigen

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Toddlers (1-3 years)
All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol, administered intravenously over 1 minute. The initial ciprofol dose is set at 0.35 mg/kg, with a dose step size of 0.1 mg/kg. The dose for each subsequent patient is determined by the biased-coin design: if the previous patient achieves successful LMA insertion (no movement), the next patient receives the same dose with a probability of 0.947 or a 0.1 mg/kg lower dose with a probability of 0.053. If the previous patient fails (movement occurs), the next patient receives a 0.1 mg/kg higher dose.
All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol
Experimenteel: Preschoolers (4-6 years)
All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol, administered intravenously over 1 minute. The initial ciprofol dose is set at 0.35 mg/kg, with a dose step size of 0.1 mg/kg. The dose for each subsequent patient is determined by the biased-coin design: if the previous patient achieves successful LMA insertion (no movement), the next patient receives the same dose with a probability of 0.947 or a 0.1 mg/kg lower dose with a probability of 0.053. If the previous patient fails (movement occurs), the next patient receives a 0.1 mg/kg higher dose.
All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol
Experimenteel: School-age (7-12 years)
All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol, administered intravenously over 1 minute. The initial ciprofol dose is set at 0.35 mg/kg, with a dose step size of 0.1 mg/kg. The dose for each subsequent patient is determined by the biased-coin design: if the previous patient achieves successful LMA insertion (no movement), the next patient receives the same dose with a probability of 0.947 or a 0.1 mg/kg lower dose with a probability of 0.053. If the previous patient fails (movement occurs), the next patient receives a 0.1 mg/kg higher dose.
All patients will receive a fixed dose of fentanyl (1 μg/kg) and a predetermined bolus dose of ciprofol

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
ED95 of ciprofol for LMA insertion in children
Tijdsspanne: At LMA insertion, 90 seconds after drug injection
The ED95 of ciprofol (combined with fentanyl 1 μg/kg) for successful LMA insertion, defined as absence of movement, coughing, gagging, or laryngospasm during insertion and cuff inflation.
At LMA insertion, 90 seconds after drug injection

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Incidence of adverse events within 5 minutes
Tijdsspanne: Within 5 minutes after drug injection
Within 5 minutes after drug injection
mean arterial pressure (MAP)
Tijdsspanne: from before induction to 1 minute afte LMA insertion
blood pressure were documented at the following time points: T1 (before induction), T2 (at LMA insertion), and T3 (1 minute after LMA insertion)
from before induction to 1 minute afte LMA insertion
heart rate
Tijdsspanne: from before induction to 1 minute afte LMA insertion
T1 (before induction), T2 (at LMA insertion), and T3 (1 minute after LMA insertion)
from before induction to 1 minute afte LMA insertion
Bispectral Index (BIS)
Tijdsspanne: From before induction to 1 minute afte LMA insertion
BIS values were documented at the following time points: T1 (before induction), T2 (at LMA insertion), and T3 (1 minute after LMA insertion)
From before induction to 1 minute afte LMA insertion
Pediatric Anesthesia Emergence Delirium (PAED) scale score
Tijdsspanne: Within 15-30 minutes in PACU
Within 15-30 minutes in PACU

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

15 juni 2026

Primaire voltooiing (Geschat)

2 juli 2028

Studie voltooiing (Geschat)

1 december 2028

Studieregistratiedata

Eerst ingediend

2 juli 2026

Eerst ingediend dat voldeed aan de QC-criteria

10 juli 2026

Eerst geplaatst (Werkelijk)

13 juli 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

13 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

10 juli 2026

Laatst geverifieerd

1 juni 2026

Meer informatie

Termen gerelateerd aan deze studie

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

Klinische onderzoeken op Ciprofol

3
Abonneren