مقايسه مدت زمان و تعداد دفعات تحريك الكتريكي بر بهبود زخم

Comparison of time duration and frequency of electrical stimulation on wound healing

Introduction: It has been shown that the electrical stimulation has improved the skin blood circulation and wound healing in animals. The present study was conducted to determine a standard model of minimum current and period of electrical stimulation that will influence wound healing. Materials and Methods: For this propose 35 mm incisions (35 mm length) were made at the back of Dutch rabbits. Due to the propose previous studies the five groups animals were stimulated by the electrical impulses (80 Hz and 500 ms duration) as followed: Group one; four times daily, 4 days, 10 min. Group two: four times daily, 4 days, 30 min. Group three: one time daily, 4 days, 120 min. Group four: two times daily, 7 days, 30 min. Group five: four times daily, 7 days, 30 min. Group six: Received no electrical stimulation and considered as a control group, the woundsʹ length, area and period of healing were recorded as well as the tensile strength. Results: The results indicated that the duration of wounds-healing in all experimental groups was significantly less than control group (P<0.05). Conclusion: Regard to effects of electrical currents on the skin blood flow and the least of electrical stimulation in group one and significantly reduced healing period in this group in comparison with control group and other indices as well, we suppose that increasing frequency of electrical stimulation while shortening time duration, improve the skin blood circulation and wound healing period while decreasing the side effects.