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J Pediatr. 2014 Oct;165(4):862-5.e1. doi: 10.1016/j.jpeds.2014.06.038. Epub 2014 Jul 22.

Ultrasound evaluation of lumbar spine anatomy in newborn infants: implications for optimal performance of lumbar puncture.

Author information

1
Department of Pediatrics, Complejo Asistencial Universitario de León, León, Spain. Electronic address: Ignacio.oulego@gmail.com.
2
Department of Pediatrics, Complejo Asistencial Universitario de León, León, Spain.
3
Neonatal Unit, Complejo Asistencial Universitario de León, León, Spain.
4
Centro de Salud Ponferrada III, Ponferrada, Spain.

Abstract

An ultrasound evaluation of lumbar spine anatomic landmarks relevant for lumbar puncture was performed in 199 newborn infants. Effects of 6 patient positions and gestational age on interspinous process distance, subarachnoid space width, predicted needle entry angle, and needle insertion depth were assessed. Our results identify optimized conditions for lumbar puncture: sitting the infant with hips flexed, a needle entry angle of 65-70 degrees, and proper needle insertion depth (calculated as 2.5 × weight in kilograms + 6 in millimeters).

PMID:
25063721
DOI:
10.1016/j.jpeds.2014.06.038
[Indexed for MEDLINE]

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