20 July 2023 : Review article
Understanding Acute Respiratory Distress Syndrome in High-Altitude Environments: A Comprehensive Review of Diagnosis and Treatment
Litao Guo1ABEF*, Jingjing Sun1CEF, Zongzhao He2BF, Qingdong Shi1AEF, Siqing Ma2ADFGDOI: 10.12659/MSM.939935
Med Sci Monit 2023; 29:e939935
Table 1 Diagnostic criteria of blood gas on different elevations (mmHg) [6].
Elevation | PaO2 (FiO2=0.21) | PaO2/FiO2 | P(A-a)O2 (FiO2=1.0) | SaO2 (%) | ||||
---|---|---|---|---|---|---|---|---|
(m) | ALI | ARDS | ALI | ARDS | ALI | ARDS | ALI | ARDS |
≥1500–<2000 | ≤50 | ≤45 | ≤250 | ≤180 | ≥150 | ≥200 | ≤85 | ≤80 |
≥2000–<2500 | ≤45 | ≤40 | ≤200 | ≤150 | ≥200 | ≥300 | ≤80 | ≤70 |
≥2500–<3650 | ≤40 | ≤35 | ≤150 | ≤100 | ≥250 | ≥300 | ≤70 | ≤60 |
1 mmHg=0.133 kPa. PaO – partial pressure of arterial oxygen; FiO – fraction of inspired oxygen; P(A-a) O – alveolus-arteria oxygen partial pressure differ; SaO – arterial oxygen saturation; ARDS – acute respiratory distress syndrome; ALI – acute lung injury. |