Conclusion Filling the pre-sacral space with gauzes and pressing drawing pin on the sacrum are effective methods for the injury of the pre-sacral vein in operation of rectal carcinoma.
结论骶前纱布垫压迫，骶骨胛图钉按压法是术中骶前静脉损伤发生出血时行之有效的止血方法。
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Conclusion The hemodynamic features of central retinal arteries in patients with retinal vein occlusion are low blood flow velocity, low vessel filling intensity and poor distal tissue blood filling.
Result Compelling restraint, the clearness and filling degree of the vein, numbers of accompanying were related to the success rate of intravenous infusion(P<0.01 or P<0.05).