Abstract
Use of a tourniquet on a limb to stem blood flow is frequent in surgery. However, this results in an ischaemia-reperfusion effect that causes damage through the production of free radicals. The aim of this work was to evaluate this production of free radicals in an ischaemia-reperfusion model in the rabbit after placement of a tourniquet. Plasma lipoperoxides were measured by high-performance liquid chromatography using the malondialdehyde assay method. We found significant (P < 0.01) production of free radicals 1 min after release of the tourniquet compared with controls; no variation in levels of free radicals was observed during the ischaemia phase.
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