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男性,35岁,汽车撞伤左季肋区4小时,神志模糊,体温37.5℃,脉搏细弱,血压60/40mmHg,全腹压痛,无反跳痛,无尿。首先考虑的诊断是
A. 过敏性休克
B. 中度低血容量性休克
C. 重度低血容量性休克
D. 神经源性休克
E. 感染性休克
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