PaO2/FiO2 的参考范围为 350 ~ 500 mmHg（年龄越大，参考值越低）。 Horovitz 等人认为PaO2/FiO2≤ 300 mmHg 意味着存在显著的肺部功能障碍（诊断 I 型呼吸衰竭要求海平面大气压下 PaO2＜ 60 mmHg，空气 FiO2为 21%， PaO2/FiO2大致计算为 ＜ 300 mmHg），后续柏林定义及 ARDS 相关指南也都采用这一界值来进行相关诊断 ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

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We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. The performance of prognostic models for COVID-19 is ...