• Eur J Anaesthesiol · Mar 2004

    Randomized Controlled Trial Comparative Study Clinical Trial

    Do we necessarily need local anaesthetics for venous cannulation? A comparison of different cannula sizes.

    • K D Röhm, T A H Schöllhorn, M J Gwosdek, S N Piper, W H Maleck, and J Boldt.
    • Klinikum Ludwigshafen, Department of Anaesthesiology, Ludwigshafen, Germany. k.d.roehm@t-online.de
    • Eur J Anaesthesiol. 2004 Mar 1;21(3):214-6.

    Background And ObjectiveThis randomized, prospective study was performed to evaluate the efficacy of a subcutaneous local anaesthetic infiltration prior to venepuncture using different cannula sizes.MethodsThree-hundred-and-one patients were included in the study, 150 received mepivacaine 1% (0.25 mL) subcutaneously, 151 were cannulated without local analgesia. Patients were further allocated to one of five cannula size groups (standard wire gauge (G)): 20-, 18-, 17-, 16- and 14-G. They were asked to quantify the pain experienced using a four-point rating scale.ResultsIn the group without local anaesthetics, 28.8% complained about pain compared to 12% receiving local analgesia. The incidence of pain for 14-G (10%) and 16-G (12.9%) cannulae was significantly reduced in the local analgesia group (P < 0.01) compared to no local analgesia (77.4% and 45.1%). Other cannula sizes showed no difference in pain whether using local analgesia or not.ConclusionsPatients profit from a subcutaneous infiltration with mepivacaine 1% prior to intravenous cathetherization only when cannulae of size > or = 16-G are inserted.

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    This article appears in the collection: Retracted anesthesia & perioperative medicine publications.

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