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Vesicle can be prepared from aqueous mixtures of simple commercially available, single-tailed cationic and anionic surfactants. In this work, the I3/I1 value, Ie/Im value, and fluorescence lifetime of pyrene in different systems (see the preparation of samples) were determined. The essential affecting factors in the formation of vesicle can be deduced from the obtained results. It showed that large vesicle must form naturally before sanitation in 0.082 M octyltrimethylammonium bromide and sodium laurate pH=9.2 aqueous solution. While after sonication, only small vesicle exists, which can be proved further through electron microscope.

On the basis of our experience with 200 cases undergoing free toe transfer for reconstruction of the thumb and fingers, circulatory crisis during and after operation has been analysed in this paper with our classification according to the time of occurrence. In circulatory crisis during operation or within 24 h postoperatively early exploration is indicated. Crises occurring 24, especially 48 h after operation are mainly due to vascular spasm, therefore antispasmodic therapy should be instituted whereas surgical intervention is useless and even harmful.