Study: Researchers Discover Accurate Predictor of Lumbar Plexus Depth in Children

The distance from the posterior superior iliac spine (PSIS) to the intercristal line can be an accurate predictor of lumbar plexus depth in children, according to a study published in Anesthesia & Analgesia.

Researchers studied patients aged one to 24 undergoing lower extremity surgery and lumbar plexus block. They found a strong linear relationship between lumbar plexus depth and PSIS-ICL distance. The predicted depth was within 10 mm of actual depth in 92 percent of patients.

The authors suggest the PSIS-ICL distance can guide ultrasound location and needle length.

Read the Anesthesia & Analgesia abstract on lumbar plexus depth.

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