text: 在考虑增大MAP时，应注意下列几个问题：①PIP的作用大于PEEP及I/E；②当PEEP达到8cmH<sub>2</sub>O时，再提高PEEP，PaO<sub>2</sub>升高则不明显；③过高的MAP可导致肺泡过度膨胀，静脉回流受阻，心排血量减少，氧合降低，并可引起肺气压伤。
entities.entity: MAP
entities.label: ite
entities.entity: PIP
entities.label: ite
entities.entity: PEEP
entities.label: ite
entities.entity: I/E
entities.label: ite
entities.entity: PEEP
entities.label: ite
entities.entity: PEEP
entities.label: ite
entities.entity: MAP
entities.label: ite
entities.entity: 肺泡
entities.label: bod
entities.entity: 静脉
entities.label: bod
entities.entity: 心
entities.label: bod
entities.entity: 肺气压伤
entities.label: dis