Transcutaneous electrical nerve stimulation (TENS) increases survival of ischaemic musculocutaneous flaps

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Abstract
The effect of transcutaneous electrical nerve stimulation (TENS) on the survival of a dorsal musculocutaneous flap was studied in the rat. Postoperative TENS treatment significantly increased the flap survival area in groups of rats receiving different modes of TENS. The flap survival area was up to 95% in the TENS-treated groups compared with 33-45% in the control groups. Repeated (3 days) high intensity (20 mA), high-frequency (80 Hz) TENS applied segmentally at the base of the flap was shown to be the most effective treatment in increasing the flap survival. Preoperative TENS did not increase flap survival area compared with untreated controls. It is concluded that postoperative TENS treatment markedly increases the experimental flap survival area and may be of clinical value for treatment of local ischaemia.