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Impact of EEG-guided Sevofluorane on Opioid Consumption and Quality of Awakening
Impact of EEG-guided Sevoflurane Titration on Opioid Consumption and Emergency Quality in Pediatric Patients Undergoing Surgery Without Regional Anesthesia
Studie Overzicht
Toestand
Interventie / Behandeling
Gedetailleerde beschrijving
Electroencephalography (EEG)-guided anesthetic titration has demonstrated significant clinical benefits in both pediatric and adult patients. However, proprietary EEG-based indices widely used for monitoring anesthetic depth are affected by patient age and the specific anesthetic agent used, limiting their validity and generalizability. More recently, titrating anesthetics based on a specific interpretation of EEG waveforms and their oscillatory patterns observed on the spectrogram has gained popularity.
Previous studies indicate that sevoflurane titration based on specific EEG waveforms and oscillatory patterns yields more substantial reductions in sevoflurane exposure than previously reported with proprietary EEG indices. Furthermore, reducing sevoflurane exposure decreases the incidence of EEG burst suppression, results in faster emergence times, and reduces emergence delirium.
However, most of these benefits have been reported in the context of surgeries where intraoperative antinociception was provided via central or peripheral nerve blocks, in the absence of increased intraoperative analgesic and opioid requirements. It remains unclear whether the benefits associated with reduced sevoflurane exposure are also observed in surgeries where intraoperative antinociception cannot be provided through regional blocks. In such cases, antinociception depends primarily on the co-administration of inhaled anesthetics and opioids. Therefore, the clinical benefits of decreasing sevoflurane exposure via electroencephalographic guidance must be weighed against the side effects of higher perioperative opioid requirements.
What will be the impact of strict titration of the hypnotic component using electroencephalography in a painful surgery, in terms of intraoperative opioid consumption and the quality of anesthetic emergence? It is hypothesized that to adjust the sevoflurane dose according to EEG targets in children undergoing surgeries where intraoperative antinociception cannot be provided via regional blocks will result in a reduction of sevoflurane requirements. However, a compensatory increase in intraoperative opioid consumption is expected to be observed, which could subsequently affect the quality and duration of the anesthetic recovery period.
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Región
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Santiago, Región, Chili, 450881
- Hospital UC Christus
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Kind
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Age 2-8 years
- ASA Physical Status I or II
- Elective tonsillectomy (±adenoidectomy)
- Signed parental consent (and assent ≥7 years)
Exclusion Criteria:
- Neurological or psychiatric disorders
- Growth or developmental delay
- Known allergy to study medications
- Coagulation disorders
- Parental or patient refusal
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Diagnostisch
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Dubbele
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Actieve vergelijker: Control Group
Induction with sevoflurane 5% in O₂.
Maintenance at fixed 1 age-adjusted MAC in O₂/air FiO₂ 60%.
BIS monitor attached but screen concealed; anesthesiologist blinded to EEG data.
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Arm Description: Induction with sevoflurane 5% in O₂.
Maintenance at fixed 1 age-adjusted MAC in O₂/air FiO₂ 60%.
BIS monitor attached but screen concealed; anesthesiologist blinded to EEG data.
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Experimenteel: Intervention Group
Induction with sevoflurane 3% in O₂.
Maintenance titrated to the minimum concentration sustaining a continuous slow-delta/alpha EEG pattern (SEF 17-20 Hz), starting at 0.7 age-adjusted MAC in O₂/air FiO₂ 60%.
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Induction with sevoflurane 3% in O₂.
Maintenance titrated to the minimum concentration sustaining a continuous slow-delta/alpha EEG pattern (SEF 17-20 Hz), starting at 0.7 age-adjusted MAC in O₂/air FiO₂ 60%.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Total intraoperative opioid consumption
Tijdsspanne: Intraoperative period
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Mean fentanyl rate (mcg/kg).
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Intraoperative period
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Sevoflurane exposure
Tijdsspanne: Intraoperative period
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Age-adjusted MAC-hours
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Intraoperative period
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Sevoflurane exposure
Tijdsspanne: Intraoperative period
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EtSevo
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Intraoperative period
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EEG burst suppression
Tijdsspanne: Intraoperative period
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incidence
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Intraoperative period
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EEG spectral markers_TBP
Tijdsspanne: Intraoperative period
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Total band power
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Intraoperative period
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EEG spectral markers_MedF
Tijdsspanne: Intraoperative period
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Median frequency
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Intraoperative period
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EEG spectral markers_SEF95
Tijdsspanne: Intraoperative period
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SEF 95%
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Intraoperative period
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EEG burst suppression
Tijdsspanne: Intraoperative period
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Cumulative duration
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Intraoperative period
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hemodynamic, Bradicardia
Tijdsspanne: Intraoperative period
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Intraoperative bradycardia (HR<20% basaline) requiring intervention
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Intraoperative period
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hemodynamic, hypotension
Tijdsspanne: Intraoperative period
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intraoperative hypotension (MAP<20% basaline) requiring intervention
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Intraoperative period
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emergence time
Tijdsspanne: From end of anesthesia period to extubation
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Time from anesthesia discontinuation to extubation
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From end of anesthesia period to extubation
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Eye opening, emergence time
Tijdsspanne: From end of anesthesia period to extubation
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Time from anesthesia discontinuation to eye opening
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From end of anesthesia period to extubation
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emergence delirium
Tijdsspanne: Post anesthesia period
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incidence by paed scale
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Post anesthesia period
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Postoperative pain
Tijdsspanne: Post anesthesia period
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flacc/vas scores
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Post anesthesia period
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Rescue analgesia
Tijdsspanne: Post anesthesia period
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Drug use for rescue analgesia non opioids (mg)
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Post anesthesia period
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postoperative opioid use
Tijdsspanne: Post anesthesia period
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fentanyl use for pain rescue (mcg)
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Post anesthesia period
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Medewerkers en onderzoekers
Onderzoekers
- Studie stoel: Victor Contreras, MSN, RN, Researcher
- Hoofdonderzoeker: Mauricio Ibacache, Phd, Professor
Publicaties en nuttige links
Algemene publicaties
- Wang HY, Chen TY, Li DJ, Lin PY, Su KP, Chiang MH, Carvalho AF, Stubbs B, Tu YK, Wu YC, Roerecke M, Smith L, Tseng PT, Hung KC. Association of pharmacological prophylaxis with the risk of pediatric emergence delirium after sevoflurane anesthesia: An updated network meta-analysis. J Clin Anesth. 2021 Dec;75:110488. doi: 10.1016/j.jclinane.2021.110488. Epub 2021 Sep 1.
- Miyasaka KW, Suzuki Y, Brown EN, Nagasaka Y. EEG-Guided Titration of Sevoflurane and Pediatric Anesthesia Emergence Delirium: A Randomized Clinical Trial. JAMA Pediatr. 2025 Apr 21;179(7):704-12. doi: 10.1001/jamapediatrics.2025.0517. Online ahead of print.
- Sun Y, Ye F, Wang J, Ai P, Wei C, Wu A, Xie W. Electroencephalography-Guided Anesthetic Delivery for Preventing Postoperative Delirium in Adults: An Updated Meta-analysis. Anesth Analg. 2020 Sep;131(3):712-719. doi: 10.1213/ANE.0000000000004746.
Studie record data
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Studie start (Werkelijk)
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
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Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
- Pijn
- Neurologische manifestaties
- Ziekten van het zenuwstelsel
- Psychische aandoening
- Postoperatieve complicaties
- Pathologische processen
- Verwardheid
- Neurologische gedragsmanifestaties
- Neurocognitieve stoornissen
- Delirium
- Pathologische aandoeningen, tekenen en symptomen
- Tekenen en symptomen
- Ontstaan Delirium
- Pijn, postoperatief
Andere studie-ID-nummers
- 260319004
Plan Individuele Deelnemersgegevens (IPD)
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