诊断ARDS时，血气分析氧合指数PaO<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20221202/13384626_0.gif">/FiO<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20221202/13384626_0_1.gif">为