Title |
Ultrasonography helps emergency physician identify the best lumbar puncture site under the conus medullaris
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Published in |
Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine, June 2017
|
DOI | 10.1186/s13049-017-0406-9 |
Pubmed ID | |
Authors |
Line Dussourd, Batistin Martinon, Clara Candille, Carole Paquier, Claire Wintenberger, Perrine Dumanoir, Anais Plazanet, Damien Viglino, Maxime Maignan |
Abstract |
Ultrasonography - assisted lumbar puncture helps physicians identify traditional anatomical landmarks. However, it could help to overcome the anatomical dogmas and thus identify the best interspinous space under the medullary cone. Traditional anatomical landmarks were reported on a tracing paper in patients with an indication for lumbar puncture. Then, ultrasonography was used to locate the optimal interspinous level defined as the widest subarachnoid space located below the conus medullaris. Primary endpoint was the distance between traditional and ultrasound landmarks. Fifty-seven patients were included. Seven emergency physicians practiced the procedure. The median absolute distance between traditional anatomical landmarks and ultrasound marking was 32 [interquartile (IQR) 27 - 37] mm. The inter-spinous space identified in the two procedures was different in 68% of the cases. Ultrasound not only allows us to better identify anatomical structures before lumbar puncture, but it also allows us to choose a site of puncture different from recommendations. |
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