What question did this study set out to answer?

To quantitatively evaluate the onset rate, density, and duration of infant spinal anesthesia using continuous surface electromyography.

October 3, 2023Pediatric AnesthesiaOpen Access

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

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Authors

SAS AldousChristchurch Hospital DCDylan T. CaseyUniversity of Vermont MDMichael DeSarnoUniversity of Vermont

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Implication

Observational study reveals motor block duration exceeding 90 minutes during infant spinal anesthesia, indicating potential for longer pediatric surgical procedures.

Key Points

To quantitatively evaluate the onset rate, density, and duration of infant spinal anesthesia using continuous surface electromyography.
Conducted an observational study of N=13 male infants (mean age 7.5 ± 2.6 months, weight 8.0 ± 2.2 kg) undergoing lower abdominal surgery under spinal anesthesia with 0.5% bupivacaine and clonidine.
Recorded continuous surface electromyography at T2, bilateral T8, and L2 myotomes to objectively measure block onset rate, maximum signal difference, and time to 50% signal recovery.
Onset rate varied significantly by myotome (F(3, 35) = 7.42, p < .001), showing the fastest decline at L2 (mean percent decrease per second 32.92 [95% CI, 26.46 to 39.38]) versus T2 (15.93 [95% CI, 9.23 to 22.62]).
Spinal anesthesia induced statistically significant, near-complete signal attenuation in all myotomes (pre-post difference: T2 = 39.53 dB [95% CI, 28.87 to 50.20], right T8 = 51.97 dB [95% CI, 41.30 to 62.64], left T8 = 46.09 dB [95% CI, 35.42 to 56.76], L2 = 44.75 dB [95% CI, 34.08 to 55.42]; all p < .0001).
Mean motor block duration lasted greater than 90 minutes with no significant differences across myotomes and no correlation with age or weight.

Cite This Study

Aldous et al. (2023) studied this question.

synapsesocial.com/papers/6aa93239f486d0383d255400 https://doi.org/10.1111/pan.14774

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Implication

Observational study reveals motor block duration exceeding 90 minutes during infant spinal anesthesia, indicating potential for longer pediatric surgical procedures.

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

Discussion

Member takes

Implication

Key Points

Cite This Study

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

Discussion

Member takes

Implication

Key Points

Cite This Study

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