The British journal of dermatology
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Clinical Trial
Plasma concentrations of lignocaine and prilocaine after a 24-h application of analgesic cream (EMLA) to leg ulcers.
Although the lignocaine (lidocaine)-prilocaine cream EMLA has been extensively studied for the relief of acute treatment-related pain from sharp leg ulcer debridement, no data exist on systemic absorption from prolonged application in patients with chronically painful ulcers. ⋯ The results indicate that a 24-h application of 5-10 g EMLA results in peak plasma concentrations of the two local anaesthetics, which combined are less than one-fifth of those associated with toxic reactions. The analgesic efficacy of EMLA for the relief of chronic ulcer pain deserves further study.