远红外线对鼠随意皮瓣成活的影响

THE EFFECT OF FAR INFRARED RAYS ON THE SURVIVAL OF RANDOMIZED SKIN FLAP IN THE RAT: AN EXPERIMENTAL STUDY/

为了观察远红外线照射对实验性皮瓣成活的影响，采用４８只ＳＤ大鼠，在背部掀起皮瓣２ｃｍ×６ｃｍ。从术前３ｄ至术后第５ｄ，应用远红外线照射大鼠皮瓣，观测皮瓣掀起后即刻的微循环变化和术后７ｄ成活情况。结果显示，远红外线组皮瓣近、远端微血管开放率、流动微血管口径和流速均高于对照组，经统计学处理有显著差异（Ｐ＜０．０５），皮瓣成活率较对照组的６２．７％提高到照射组的８０．５％（Ｐ＜０．０１）。研究结果表明，远红外线能扩张微血管，改善微循环，增加皮瓣血流量，提高皮瓣成活率。

In order to observe the effect of far infrared rays on the survival of skin flap, the following experiment was performed. Forty eight SD rats were selected and divided into two groups. The rats received 0.3 w/cm 2 radiation twice a day from 3 days before operation to 5 days after operation in the experimental group, while in the control group the rats received none before or after the operation. The flap was designed as 2 cm×6 cm in the back of the rats with the pedicle caudalward. The microcirculatory changes of the flap were observed, and the survival area of the flap was calculated. The results showed that either in the proximal or in the distal part of the graft, in the experimental group, the mean opening rate, diameter and the flowing velocity of the microvessels were significantly higher than those in the control group (P<0.05). The mean rate of survival area of the experimental group (80.5%) was also higher than that of the control group (62.7%) (P<0.01). It was suggested that radiation with far infrared rays could dilate the microvessels, improve the flap microcirculation, therefore, enhance the survival of the randomized skin flap.