Conclusions AVP level is closely associated with the prognosis after acute brain injury.AVP may play a vital role in pathogenesis of brain edema after acute brain injury.

• 结论急性颅脑损伤后血浆中AVP的动态变化与急性颅脑损伤预后密切相关，AVP参与了颅脑损伤后继发性脑水肿形成的病理生理过程。