Pediatric anesthesia & critical care

Characterization of infant spinal anesthesia using surface electromyography: An observational study

Paediatr AnaesthPublished Observational study

Main finding · Onset rate (mean percent decrease per second) and pre-post signal attenuation (mean decibels) by myotome; durationResult — go to the resultF (3, 35) 7.42

Authors' conclusion

Surface electromyography can be used to characterize neural blockade in children. Importantly, these results suggest that awake infant spinal anesthesia motor block lasts, conservatively, 90 min.

Study context

Population
Infants undergoing lower abdominal surgery under spinal anesthesia (0.5% bupivacaine with clonidine)all male
Participants
13 infants
Exposure
Surface electromyography signal between myotomes (T2, right T8, left T8, L2) before vs after spinal anesthesia
Outcome
Onset, density and duration of infant spinal anesthesia by surface electromyography

Main finding

As reported in the abstract

Onset rate (mean percent decrease per second) and pre-post signal attenuation (mean decibels) by myotome; duration

F (3, 35)

7.42

P < 0.001

By group

Observational data: associations, not effects.

Further findings

Mean sEMG signal across pre- and postspinal timepoints (mean decibels)

F 32.63 · P < 0.0001

Age and weight vs onset or duration

No significant associations

Original publication

Characterization of infant spinal anesthesia using surface electromyography: An observational study. Paediatr Anaesth. Published 3 October 2023. doi:10.1111/pan.14774

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