Stocker and Bonsu developed a simple equation for optimum depth of spinal needle insertion during a lumbar puncture performed on a pediatric patient. The authors are from Children's Hospital in Columbus, Ohio.
Patient selection: > 3 months to 19 years
Parameter:
(1) body weight in kilograms
depth of needle for lumbar puncture in mm =
= (0.5 * (body weight)) + 18
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