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Arch Dis Child Fetal Neonatal Ed doi:10.1136/adc.2007.129221

Ultrasonographic determination of neonatal spinal canal depth

  1. Owen J Arthurs (oja20{at}owenarthurs.co.uk)
  1. Department of Radiology, Addenbrooke's Hospital, Cambridge, United Kingdom
    1. Matthew Murray
    1. Neonatal Intensive Care Unit, Addenbrooke's Hospital, Cambridge, United Kingdom
      1. Mustafa Zubier
      1. Neonatal Intensive Care Unit, Addenbrooke's Hospital, Cambridge, United Kingdom
        1. James Tooley
        1. Department of Child Health, St Michael’s Hospital, Bristol, United Kingdom
          1. Wilf Kelsall (wilf.kelsall{at}addenbrookes.nhs.uk)
          1. Neonatal Intensive Care Unit, Addenbrooke's Hospital, Cambridge, United Kingdom
            • Published Online First 19 February 2008

            Abstract

            Objective: To determine by ultrasound (US) the spinal canal depth (SCD) in neonates and subsequently establish a nomogram and simple formula for calculating this distance.

            Design: 116 US measurements were performed by two investigators in 105 neonates at the L3-L4 inter-vertebral space. Both anterior (ASCD) and posterior (PSCD) spinal canal depth were measured and mid-canal spinal depth (MSCD) calculated. Measurements of intra- and inter-observer variability were also performed.

            Results: There is a clear relationship between body weight (W, kgs) and all SCD measurements in neonates. In particular, MSCD = 2.2W + 6.81mm, (R2 correlation coefficient 0.76), approximated by 2W + 7mm.

            Conclusion: SCD measurements are easily determined by US in neonates, with good correlation between weight and MSCD.

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              1. adc.2007.129221v1
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