Pulsed Electromagnetic Fields for Postsurgical Pain Management in Women Undergoing Cesarean Section: A Randomized, Double-Blind, Placebo-controlled Trial

Clin J Pain. 2017 Feb;33(2):142-147. doi: 10.1097/AJP.0000000000000376.


Objectives: To evaluate the efficacy of pulsed electromagnetic field (PEMF) in relation to reducing postoperative pain, analgesic use, and wound healing in patients undergoing Cesarean section (C-section).

Methods: This randomized, double-blind, placebo-controlled trial evaluated 72 women who underwent elective C-section. Thirty-six patients were assigned to the active-PEMF and 36 to the sham-PEMF groups. The participants were asked to report their pain intensity on a Visual Analog Scale (VAS) at 2, 4, 6, 12, and 24 hours and 2, 4, and 7 days after surgery. The amount of analgesics used was recorded. The surgical site was evaluated to assess the wound-healing process on the seventh postoperative day.

Results: Postoperative pain VAS scores were significantly lower in the active-PEMF group in all the measured periods within the early and the late postoperative periods. Fewer women in the active-PEMF group experienced severe postoperative pain within 24 hours postoperatively (36% vs. 72%, P=0.002). Analgesic use during the first 24 hours after C-section was 1.9-times lower in the active-PEMF group (1.6±0.7 vs. 3.1±1.2, P<0.001). The total analgesic use during the seventh postoperative days was 2.1-times lower in the active-PEMF group than in the sham group (1.7±0.7 vs. 3.7±1.1, P<0.001). Seven days postoperatively, patients in the active-PEMF group had better wound healing with no exudate, erythema, or edema (P=0.02).

Conclusions: PEMF treatment after C-section decreases postsurgical pain, analgesic use, and surgical wound exudate and edema significantly, and is associated with a high level of patient satisfaction.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Analgesics / therapeutic use
  • Cesarean Section*
  • Double-Blind Method
  • Elective Surgical Procedures
  • Female
  • Humans
  • Magnetic Field Therapy*
  • Pain Management
  • Pain Measurement
  • Pain, Postoperative / therapy*
  • Patient Satisfaction
  • Recovery of Function
  • Surgical Wound / physiopathology
  • Time Factors
  • Treatment Outcome
  • Wound Healing


  • Analgesics