Pediatric anesthesia & critical care
EEG response to a high volume (1.5 mL/kg) caudal block in infants less than 3 months
Authors' conclusion
A high-volume caudal block appears to increase intracranial pressure, thereby reducing cerebral blood flow, to the extent that it transiently will affect cerebral function as assessed by EEG (increased delta power activity) in approximately 90% of small infants.
Study context
- Population
- Infants (0–3 months) scheduled for inguinal hernia repair
- Participants
- 11 infants
- Outcome
- EEG changes (relative delta power) after high-volume caudal block
- Follow-up
- 20 min observation period
Methodological detailssingle-group
- Single-group
Main finding
As reported in the abstract
Transient EEG changes (mainly increased relative delta power) · initial 5-10 min postinjection
- All infants displayed transient EEG changes, mainly increased relative delta power
- 11
Observational data: associations, not effects.
Further findings
- HR and BP remained stable throughout the study
Original publication
EEG response to a high volume (1.5 mL/kg) caudal block in infants less than 3 months. Reg Anesth Pain Med. Published 26 June 2023. doi:10.
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