选择 15例胸降主动脉瘤非体外循环下手术病人 ,按阻断期间输血方法将其随机分 3组 ,A组 ( 5例 ) :失血回收并经上肢外周静脉输入 ;B组 ( 5例 ) :用体外循环机泵 ,将出血回收并间断经股动脉插管回输体内 ,输血流量 <50 0ml/min ;C组 ( 5例 ) :途径同组B ,采取“短阵定量快速输入”法 ,即每次输血 2 0 0～ 30 0ml,流量 >150 0ml/min。主动脉阻断时 3组股动脉压均明显下降 ,3组间无统计学差异。经三种不同输血方法处理后 ,阻断 30min时 ,B组桡动脉压显著高于C组 (P <0 0 1) ,而股动脉压明显低于C组 (P <0 0 5) ,但高于A组(P <0 0 5)。C组股动脉压显著高于A组 (P <0 0 1)及B组 (P <0 0 5)。开放主动脉时B组股动脉压显著低于A组 (P <0 0 5) ;与自身桡动脉压比较下降非常显著 (P <0 0 1)。C组能有效地提高阻断期间股动脉压。B组桡动脉压提高显著 ,但股动脉压提高不明显。A组对股动脉压无影响 Fifteen patients with thoracic aortic aneurysm undergoing off-pump surgery were randomly divided into three groups according to the blood transfusions during the obstruction: group A (n = 5), blood loss recovery and upper limb peripheral vein infusion; group B (n = 5) : With an extracorporeal circulation pump, the bleeding was recovered and discontinued through the femoral artery intubation back to the body, blood transfusion flow <50 0ml / min; C group (5 cases): the same way as group B, to take “short array quantitative rapid input” , That is, blood transfusion 200 ~ 30 0ml, flow rate> 150 0ml / min. Aortic occlusion 3 femoral arterial pressure were significantly decreased, no significant difference between the three groups. After three different transfusion methods, the radial arterial pressure in group B was significantly higher than that in group C (P <0.01) and the femoral arterial pressure was significantly lower than that in group C (P <0 05) at 30 min after occlusion Higher than A group (P <0 05). The femoral artery pressure in group C was significantly higher than that in group A (P <0.01) and group B (P <0.05). In the open aorta, the femoral arterial pressure in group B was significantly lower than that in group A (P <0 05). The radial artery pressure was significantly lower than that in group A (P <0.01). C group can effectively improve the femoral artery pressure during blocking. B group radial artery pressure increased significantly, but the femoral artery pressure increased not obvious. Group A had no effect on femoral artery pressure