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Systemic Reactions to Tourniquet Ischaemia

In 15 patients, mean age 60 years, undergoing knee arthroplasty under lumbar epidural analgesia, changes in EGG, blood pressure, blood gases, serum potassium, acid‐base status and serum creatine‐phosphokinase were studied following release of a tourniquet applied for 70–135 min. During and after the ischaemia, the skin temperature of the leg operated on was monitored.