Brain monitor may keep kids calm as they wake from surgery
NCT ID NCT07826559
First seen Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time
Summary
Researchers are testing whether adjusting anesthesia depth with a bispectral index (BIS) brain monitor lowers the chance that children wake up confused and agitated after tonsil or adenoid removal. The trial includes 125 children aged 2 to 12 who are generally healthy and go home the same day. During surgery, sevoflurane gas is adjusted either by BIS readings targeting a sleep depth of 40 to 60 or by standard physical signs like heart rate and blood pressure. After waking, the team rates confusion, agitation, and pain using standard scales.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- BIS-guided anesthesia using a bispectral index brain monitor to adjust sevoflurane depth
- What this could lead to
- If it works, this could give anesthesiologists a way to lower the chance of children waking up confused and agitated after surgery, and possibly use less anesthesia gas.
- What could go wrong
- This is a single-center study of 125 children having tonsil or adenoid surgery, so the approach may not work the same way for other surgeries or hospitals. Waking up confused is usually brief and not dangerous, and the brain monitor adds sensors and cost.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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125 people
The number who actually took part.
- Started
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Aug 2025
- Finished
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Nov 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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2 to 12 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Children between the ages of 2 and 12 years * Scheduled for a planned surgery to remove adenoids, tonsils, or both * Generally healthy or having only mild medical conditions (American Society of Anesthesiologists class I or II) * Expected to have a surgery that lasts less than 4 hours * Having the procedure as an outpatient and expected to go home the same day Exclusion Criteria: * Having severe medical conditions (American Society of Anesthesiologists class III or IV) * Having a known history of neurological or psychiatric diseases * Diagnosed with a developmental delay * Having severe heart, lung, or metabolic conditions * Having a known allergy to any of the medications used in the study * Parents or legal guardians refuse to provide written consent to participate
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Baskent University
Ankara, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.