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Ultrasound identification of landmarks preceding lumbar puncture: a pilot study


Aim: To assess the utility of bedside ultrasound performed by an emergency physician in adults undergoing diagnostic lumbar puncture.

Method: Ultrasound was used as the primary means of determining the site of skin puncture, angle of needle advancement and depth needed to access the subarachnoid space.

Results: Cerebrospinal fluid was obtained from 36 of 39 patients (92.3%) in the first interspinous space attempted.

Conclusions: The ultrasonographically measured depth of the dura mater correlates strongly with the final needle depth.

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