1·Method : We accept indwelling needle at vena saphena magna near medial malleolus and cephanus vena at wrist.
方法：选择下肢内踝大隐静脉和上肢腕部头静脉，使用静脉留置针。
2·High concentration emulsified isoflurane could damage endothelial cells and weak the relaxation response of the saphena vessel significantly.
高浓度乳化异氟烷对血管内皮有明显损伤作用，对大隐静脉舒张功能有明显影响。
3·Septocutaneous perforator: in 4 saphena arteria flaps and 6 internal low leg flaps, the colour signals of the axial artery were founded through the intermuscular septum.
肌间隙皮血管型：隐动脉皮瓣4例，小腿内侧中下部皮瓣6例，声像图显示轴心动脉走行于回声不同的肌块间。