[The effects of He-Ne laser on the revascularization of the distal part of the subdermal vascular network skin flap].

The distal part of the subdermal vascular network (SVN) random skin flap on the rabbit was radiated with He-Ne laser at an energy density of 3.15 J/cm2. The blood vessels of the flap were perfused with Chinese ink. Histological examinations and image analysis were applied to evaluate the effects of He-Ne laser radiation on the SVN skin flap. It was found that the revascularization and the survival rate of the SVN random skin flap were highly related with the proportion of the length to width of the flap in the early stage. The radiation of the He-Ne laser could improve the microcirculation of the flap and increase its survival rate, which was mainly resulted from dilation of the blood vessels, especially the veins, and anastomosis of the vessels between the flap and the recipient site.