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GUERRA, D. R. Influence of application’s moment of transcutaneous electrical nerve stimulation (TENS) as analgesic resource in inguinal herniorraphies. 2008. 217 f. Thesis (Doctoral) –– School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, 2008. Introduction. The use of Transcutaneous Electrical Nerve Stimulation (TENS) to treat postoperative pain has been searched lately. However, in the most of studies, TENS has been applied only after surgeries, excepting one where TENS was utilized before. In the two situations, this resource has presented good benefits for pain treatment, observed not only by a reduction in its intensity but also in consumption of analgesics. Nevertheless, there is a doubt about the role that TENS application’s moment can exert in analgesia’s level obtained in the postoperative period. Objective. To analyze the influence of application’s moment of high frequency TENS as an analgesic resource in male patients submitted to inguinal herniorraphy (Bassini technique). Cases and method. It was a placebo-controlled, randomized and doubleblinded trial, carried out at the Hospital São José (Aracaju, SE, Brazil), between April 2007 and June 2008, and had a sample of 125 patients, distributed in 5 groups: “pre TENS” (n = 25), “post TENS” (n = 25), “preand post TENS” (n = 25), “Sham” (n = 25) and “Control” (n = 25). There was the standardization of the bupivacaine (0,5 %) as an anesthetic drug, as well as postoperative analgesic prescription: dipyrone, only if the patient complained about pain; and ketoprofen, prescribed for every 8 h. Pain intensity was measured by the Numerical Rating Scale (NRS), in 8 moments (21⁄2, 3, 31⁄2, 4, 5, 6 and 7 h after inducing the anesthesia besides one last verification at the hospital discharge). Brazilian version of the McGill Pain Questionnaire (Br-MPQ) was used 4 h following the inducing of the anesthesia. P values ≤ .05 were considered significant. Results. Patients treated with TENS showed less pain intensity, and the most expressive results occurred in “preand post TENS”, moreover there was also significant reduction in dipyrone consumption. Conclusion. The preand postoperative use of high frequency TENS in inguinal herniorraphy provided major analgesia than the one obtained by TENS application only in the preor postoperative period.

Influência do momento de aplicação da estimulação elétrica nervosa transcutânea (TENS) como recurso analgésico em herniorrafias inguinais