• Br J Anaesth · May 1975

    Comparative Study

    An investigation in man into the relative potency of lignocaine, bupivacaine and etidocaine.

    • M Morgan and W J Russell.
    • Br J Anaesth. 1975 May 1;47(5):586-91.

    AbstractThe relative potency of lignocaine, bupivacaine and etidocaine was estimated by forearm skin weals in four volunteers. Potency was estimated as the time to half-recovery of a sharp sensation in response to a needle-prick. The increase in duration of action with increased concentration was greater for bupivacaine and etidocaine as compared with lignocaine. At the same concentrations, bupivacaine had a longer duration of action than etidocaine. However, etidocaine 1% had a longer duration of action than bupivacaine 0.5%.

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