Different injection speeds produce distinct temporal dynamics of optic nerve sheath diameter increase during caudal block in children: a prospective randomized trial - Takeaways - MDSpire
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Impact of Injection Velocity on the Temporal Changes of Optic Nerve Sheath Diameter During Caudal Block in Pediatric Patients: A Prospective Randomized Study

  • By

  • Wenshuang Yang

  • Ding Han

  • Siyuan Xie

  • Shiya Zou

  • Ya Ma

  • Guimin Huang

  • Shoudong Pan

  • June 9, 2026

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  • 1

    The study evaluated the effect of injection speed on optic nerve sheath diameter (ONSD) changes during caudal block in children aged 1–3 years.

  • 2

    Eighty children were analyzed, with ONSD measured at baseline and at 10, 20, and 40 minutes post-injection.

  • 3

    At 10 minutes, ONSD was significantly higher in the high-speed group compared to the low-speed group.

  • 4

    At 20 minutes, ONSD was significantly higher in the low-speed group compared to the high-speed group.

  • 5

    Both injection speeds were well tolerated, with no significant differences in vital signs or adverse events reported.

Original Source(s)

Different injection speeds produce distinct temporal dynamics of optic nerve sheath diameter increase during caudal block in children: a prospective randomized trial

  • by Wenshuang Yang, Ding Han, Siyuan Xie, Shiya Zou, Ya Ma, Guimin Huang, Shoudong Pan

  • June 9, 2026

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