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The posterior lumbar dural depth: an ultrasonographic study in children
Yetkin Ozer1, Tülay Ozer, Hanife Altunkaya
1Zonguldak Karaelmas University School of Medicine, Department of Anaesthesiology and Reanimation, Zonguldak, Turkey. yozer@med.karaelmas.edu.tr
Insights
Accurate measurement of the skin-to-dura mater distance in children is crucial for lumbar puncture success. This study developed a predictive model using ultrasonography for pediatric patients aged 7-12 years.
Area of Science:
- Pediatric Anatomy
- Medical Imaging
- Interventional Procedures
Background:
- Lumbar puncture in children presents unique anatomical challenges.
- Precise knowledge of skin-to-dura mater depth is vital for procedural success.
- Ultrasonography offers a non-invasive method for anatomical assessment.
Purpose of the Study:
- To investigate the posterior lumbar spine anatomy at the L4-L5 intervertebral space in children.
- To establish a predictive model for estimating skin-to-dura mater distance.
- To correlate demographic factors with dural depth in pediatric patients.
Main Methods:
- Ultrasonographic examination of the L4-L5 intervertebral space in 137 children (aged 7-12 years).
- Measurement of the distance from skin to the dura mater.
- Application of single linear regression analysis to develop predictive equations.
Main Results:
- A statistically significant difference in skin-to-dura mater distance was observed between girls and boys.
- Predictive models demonstrated significant correlations between dural depth and demographic variables (age, weight, height, BSA).
- In girls, weight and body surface area showed the highest correlation with dural depth.
Conclusions:
- A reliable statistical model can predict the skin-to-dura mater distance at L4-L5 in children aged 7-12.
- This predictive model can aid clinicians in improving lumbar puncture success rates.
- Demographic factors are valuable predictors of dural depth in pediatric populations.
Abstract:
Lumbar puncture or identification of the epidural space is technically more difficult in children. Prior obtained information regarding the distance from skin to the dura mater may be useful as leading to an increase in success. We studied the anatomy of the posterior lumbar spine at the L4-5 intervertebral space in 137 children, using ultrasonography. Children aged between 7 and 12 years in whom weight and height are in 3-97 percentiles (recommended for healthy Turkish boys and girls) were investigated. The measured distance from skin to dura mater was found significantly higher in girls (2.59+/-0.44 cm) than boys (2.43+/-0.46 cm) (p<0.05). Prediction of the posterior dural depth at L4-5 level was obtained using single linear regression equation. All demographic variables correlated significantly with the dural depth in both sexes. In girls the skin-duramater distance achieved highest correlation ranks with weight and body surface area (BSA): 'dural depth' (cm)=1.094+[0.048 x weight (kg)], r=0.79, p<0.01 and 'dural depth' (cm)=0.337+[2.119xBSA m2], r=0.76, p<0.01). We concluded that the distance between the skin and the dura mater at the level of L4-5 interspace could be predicted using a statistical model based on the age, weight, height or BSA of children aged between 7-12 years old.
