vein material

The control group will only go through catheterization of cervical artery and vein and femoral vein to obtain material without bloodletting . Other groups obtain materials when various experimental phases are achieved after severe traumatic shock and resuscitation .

对照组仅行颈动静脉和股静脉穿刺插管，不放血仅取材；其他各组在达到重度创伤性休克后的各实验相和复苏后的各实验相取材。