[名词解释] 脉搏短绌

奇脉 水冲脉 交替脉 弛张热 慢性呼吸衰竭患者机械通气的指征，错误的是() ["A．PaCO2进行性升高","B．PaCO2升高达到80mmHg以上","C．严重的低氧血症，积极氧疗后，PaO仍为40mmHg","D．呼吸频率超过35次/分","E．并发肺性脑病"] 脉搏短绌