AI Article Synopsis
- - The study aimed to create a mathematical formula to predict the optimal depth for spinal needle insertion based on neonates' gestation age and weight.
- - Researchers examined 127 neonates, using ultrasound to measure spinal canal depth, and found that both weight and post-menstrual age positively influenced spinal dimensions.
- - A strong correlation was identified between weight and spinal canal depth, leading to the formula MSCD (cm) = 0.2 × weight in kg + 0.45, which could help improve needle placement accuracy and reduce the risk of trauma during lumbar punctures.
Article Abstract
Objective: To provide a gestation age- and weight-specific mathematical formula for predicting the optimal depth of spinal needle insertion.
Methods: The study included 127 neonates between 28 and 40 weeks of gestation and weighing 700 to 4000 grams, and a total of 202 ultrasound examinations were performed. Anterior and posterior borders were delineated using ultrasound and measured as spinal canal depth in lateral decubitus position at L3- L4 vertebral interspace. The mid-spinal canal depth (MSCD) was calculated.
Results: Spinal canal dimensions showed an increasing trend with an increase in weight and post-menstrual age of the babies. The best correlation was found between weight and MSCD with an r2 of 0.85, which is given by the formula MSCD (cm) = 0.2 X weight in kg + 0.45.
Conclusion: Knowledge of the spinal canal depth using the formula may facilitate accurate needle placement, thereby decreasing traumatic lumbar puncture.
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