Journal of anesthesia
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Journal of anesthesia · Feb 2025
Margin of safety for needle puncture of a radial artery in children: Recommendation for ultrasound-guided cannulation.
The 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. ⋯ jRCT1032230243.