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。
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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。
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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。
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4. 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.
