Observational studyJournal of anesthesia2025
Margin of safety for needle puncture of a radial artery in children: Recommendation for ultrasound-guided cannulation.
Observational study in Journal of anesthesia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
5 citing papers in PubMed.
- Catheter placement to the distal radial artery: its performance and clinical assessment in retrospective study.Journal of anesthesia · 2026Article
- Catheterization of the distal radial artery in patients in prone position.Journal of anesthesia · 2026Article
- Article
- Efficacy of catheterization of the distal radial artery in blood pressure monitoring and blood sampling: a randomized controlled clinical study.Journal of anesthesia · 2026Article
- Techniques for improvement of success rate in ultrasound-guided radial artery catheterization: a narrative review.Journal of anesthesia, analgesia and critical care · 2025Review
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe radial artery is commonly selected for arterial puncture and cannulation, but radial nerve palsy may occur. To minimize possible damage to the nerve, needle puncture should be made within the margin of safety (between the wrist to the distal end of the radial artery and the radial nerve running in parallel). In adults, the margin of safety for radial artery puncture is approximately 6.8 cm from the wrist in men and approximately 5.4 cm in women, but the margin of safety is not known in children of different age groups.
methodsUsing an ultrasound device, we measured the margin of safety in 100 anesthetized patients aged 0 months to 15 yr. Polynomial quadratic regression models were made, and the lower limit of the prediction interval was regarded as the margin of safety. These results were then compared with the results obtained in adults.
resultsThe margin of safety became wider as a child grows older, and the height, weight, and age were all suitable explanatory variables to predict the margin of safety, providing fairly a constant predicted margin of safety from a few millimeters in neonates to approximately 4 cm in adolescents (much narrower than in adults).
conclusionsIn children and adolescents, the margin of safety for radial artery puncture is much narrower than in adults, and these findings support the recommendation to use ultrasound guidance during radial artery puncture in children and adolescents, to minimize the risk of associated complications. CLINICAL
trial registrationjRCT1032230243.
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