hypoxemic

Aged patients may be hypoxemic during normal spontaneous ventilation postoperatively because of the mechanical changes of the aged lung and chest wall.

老年病人由于肺和胸壁机械功能的改变术后一般自主呼吸会发生症。

As these patient are often hypoxemic and acidotic, respiratory alkalosis can be induced as a temporizing measure, until the drug of choice sodium bicarbonate (Class IIa) can be used.

压应该给于补，必要时给于拟交感神（巴胺或巴酚丁胺）。