• C M Smith, M S Guralnick, M M Gelfand, and M E Jeans.
• Pain. 1986 Nov 1;27(2):181-93.

AbstractThe purpose of this study was to examine the effect of continuous transcutaneous electrical nerve stimulation (TENS) near the incision site on post-cesarean pain and on analgesic intake during the early postoperative period. This investigation utilised a 2-group (TENS-treated and placebo TENS-treated), single-blind experimental design. Eighteen multiparous women, each having undergone an elective cesarean delivery, participated in the study. Nine patients received TENS and nine placebo stimulation. The treatment was continuous through to the third day following the day of surgery. The McGill Pain Questionnaire was used to estimate the three most frequent types of post-cesarean-associated pain, and records of the patients' analgesic intake were obtained from hospital charts. The results suggest that TENS was significantly more effective than placebo TENS in reducing cutaneous, movement-associated incisional pain. However, pain resulting from internal structures, i.e., deep pain, afterbirth pain (due to uterine contractions), and the somatic pain associated with decreased peristalsis (gas pains) were not amenable to TENS. No significant differences in analgesic intake were observed. The possible reasons for these findings are discussed.

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