Carbamazepine effects on pain management and serum IL-6, IL-10 evaluation in addicted patients undergoing surgery

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Postoperative pain control remains an important issue in the field of surgery. Assessing and managing patients with acute pain who are addicted to opioids are often challenging. It has been shown that, addicted patients are less tolerant to pain. There is limited evidence to guide the management of acute pain in these patients. Here we studied the effect of preemptive use of carbamazepine on pain behavior and serum IL-6, IL-10 levels in the addicted patients. 90 male patients (25–45 years, BMI 20–27), were divided into 3 group of 30 patients: 1- control, 2- addicted, 3- addicted patients receiving carbamazepine 400 mg before surgery. The visual analog pain scale and serum levels of IL-6 and IL-10 were evaluated at time 0 (before surgery), 1 and 12 h postoperatively. Compared with control and carbamazepine groups, addicted patients exhibited exaggerated pain behavior before and after surgery, however, postoperatively, a significant increase in pain behavior was seen in control compared to carbamazepine group. A decrease in serum IL-10 and an increase in IL-6 concentrations were observed in addicted patients. In the morphine abuser, a decrease in pain threshold, an increase in IL-6 and a decrease in IL-10 levels were evident compared with non-abuser subjects. Addition of carbamazepine improved pain sensation and serum IL-6 levels and a reduction in serum IL-10 level in control patients was paralleled to their recovery. It seems that, preemptive use of low dose of carbamazepine can improve postoperative pain and cytokine activities in the addicted patients.

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