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[Convulsion due to application of low dose meperidine: a case report].

Meperidine is an opiod analgesic used in a variety of clinical situations. The active metabolite, normeperidine, is a central nervous system excitatory agent and has the ability to cause irritability, hyperreflexia, tremor, myoclonus and seizures. Previously identified risk factors for the development of meperidine-related seizures include renal failure, high meperidine dosages, and co-adminestration of hepatic enzyme inducing medications or phenothiazines which decreases seizure treshold. Patients with normal renal function rarely manifest seizure activity when given meperidine. Here we report a 10 year old boy with a femur fraction who had normal renal function. We used low dose meperidine due to post operative pains.