Zhang M, Wang D, Qu Z
Changhai Hospital, Second Military Medical University.
Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi. 1996 May;12(3):183-6.
In using the external skin expander, we found that the expanded skin had the feature similar to a delayed flap. To study its mechanism, we chose 20 New Zealand rabbits and divided them into 2 groups randomly. The skin on the animal's back in the experimental group was expanded with the external skin expander. The laser Doppler flowmeter (LDF) and oxyhemograph (SpO2) were applied to detect skin microcirculation. The survival area and the results of microangiography of the two groups were compared. Results showed that the value of LDF of the expanded skin increased and the value of SpO2 returned to its origingal level at 12 days after expansion. The survival area in the experimental group was larger than the control. Microangiographic examinations indicated that the subcutaneous vascular anastomoses were obviously increased in the experimental group. We conclude that external skin expansion does not affect the quality of the expanded skin, and its effect is similar to delay technique.
在使用外部皮肤扩张器时，我们发现扩张后的皮肤具有类似于延迟皮瓣的特征。为研究其机制，我们选取20只新西兰兔并随机分为两组。实验组动物背部皮肤用外部皮肤扩张器进行扩张。应用激光多普勒血流仪（LDF）和血氧饱和度仪（SpO2）检测皮肤微循环。比较两组的存活面积和微血管造影结果。结果显示，扩张后12天时，扩张皮肤的LDF值升高，SpO2值恢复至原始水平。实验组的存活面积大于对照组。微血管造影检查表明，实验组皮下血管吻合明显增加。我们得出结论，外部皮肤扩张不影响扩张后皮肤的质量，其效果类似于延迟技术。
