• Der Anaesthesist · Dec 2018

    Epidural needle insertion : A large registry analysis.

    • H Bomberg, N Paquet, A Huth, S Wagenpfeil, P Kessler, H Wulf, T Wiesmann, T Standl, A Gottschalk, J Döffert, W Hering, J Birnbaum, B Kutter, J Winckelmann, S Liebl-Biereige, W Meissner, O Vicent, T Koch, H Bürkle, D I Sessler, A Raddatz, and T Volk.
    • Department of Anaesthesiology, Intensive Care Medicine and Pain Medicine, University Medical Centre, Saarland University, Kirrbergerstraße 1, 66421, Homburg/Saar, Germany. Hagen.Bomberg@uks.eu.
    • Anaesthesist. 2018 Dec 1; 67 (12): 922-930.

    BackgroundDural puncture, paraesthesia and vascular puncture are the most common complications of epidural catheter insertion. Their association with variation in midline needle insertion depth is unknown.ObjectiveThis study evaluated the risk of dural and vascular punctures and the unwanted events paraesthesia and multiple skin punctures related to midline needle insertion depth.Material And MethodsA total of 14,503 epidural catheter insertions including lumbar (L1-L5; n = 5367), low thoracic (T7-T12, n = 8234) and upper thoracic (T1-T6, n = 902) insertions, were extracted from the German Network for Regional Anaesthesia registry between 2007 and 2015. The primary outcomes were compared with logistic regression and adjusted (adj) for confounders to determine the risk of complications/events. Results are presented as odds ratios (OR, [95% confidence interval]).Main ResultsMidline insertion depth depended on body mass index, sex, and spinal level. After adjusting for confounders increased puncture depth (cm) remained an independent risk factor for vascular puncture (adjOR 1.27 [1.09-1.47], p = 0.002) and multiple skin punctures (adjOR 1.25 [1.21-1.29], p < 0.001). In contrast, dural punctures occurred at significantly shallower depths (adjOR 0.73 [0.60-0.89], p = 0.002). Paraesthesia was unrelated to insertion depth. Body mass index and sex had no influence on paraesthesia, dural and vascular punctures. Thoracic epidural insertion was associated with a lower risk of vascular puncture than at lumbar sites (adjOR 0.39 [0.18-0.84], p = 0.02).ConclusionVariation in midline insertion depth is an independent risk factor for epidural complications; however, variability precludes use of depth as a reliable guide to insertion in individual patients.

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