这个词是什么意思？
A method of mechanical ventilation in which pressure is maintained to increase the volume of gas remaining in the lungs at the end of expiration, thus reducing the shunting of blood through the lungs and improving gas exchange.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011175 · MeSH 2026。
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