Hale E H, Shankar P S
J Natl Med Assoc. 1978 Jan;70(1):43-8.
Lethal pulmonary embolism is associated with hypoxemia and hypocapnia in the vast majority of cases. The easily calculated ventilation corrected oxygen tension was a very sensitive test in patients breathing air. It yielded no normals, four percent mild hypoxemia, and 96 percent moderate to extreme hypoxemia. The alveolar-arterial oxygen tension difference and oxygen ratio were equally sensitive during air breathing. During oxygen inhalation, alveolar-arterial oxygen difference was most sensitive; oxygen ratio was second best; and oxygen saturation was the least sensitive test.
在绝大多数情况下，致死性肺栓塞与低氧血症和低碳酸血症相关。在呼吸空气的患者中，易于计算的通气校正氧分压是一项非常敏感的检测指标。该指标未出现正常情况，4%为轻度低氧血症，96%为中度至重度低氧血症。在呼吸空气时，肺泡-动脉氧分压差和氧合指数同样敏感。在吸氧过程中，肺泡-动脉氧分压差最敏感；氧合指数次之；氧饱和度是最不敏感的检测指标。
