This study by Lisón et al. (Obstetrics and Gynecology, 2017) aimed to determine the efficacy of transcutaneous electrical nerve stimulation (TENS) at relieving pain during an office-based hysteroscopy without sedation.
Randomized Controlled Study (RCT)
138 women undergoing office-based hysteroscopy were either given TENS treatment, placebo TENS, or no intervention (control). The women receiving TENS treatment had 2 electrodes placed parallel to their spinal cords at the T10-L1 and S2-S4 levels, and received varying high-frequency (80-100 Hz), 400-microsecond electrical stimulation. Those given the placebo treatment had electrodes placed, but received no electrical stimulation. Using TENS, there was a reduction in pain on entry of the hysteroscope as well as on contact and biopsy.
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