What is the normal range for arterial oxygen tension (PaO2)?

The normal range for arterial oxygen tension (PaO2) is considered to be 80-100 mmHg. This range indicates the amount of oxygen dissolved in the arterial blood, which is crucial for assessing the adequacy of oxygenation in patients.

A PaO2 within the normal range is essential for ensuring that tissues and organs receive sufficient oxygen for cellular metabolism. Values below this range may suggest hypoxemia, while values above can indicate potential hyperoxia, both of which require assessment and potentially intervention by healthcare professionals. Understanding these levels is vital in critical care settings, as they guide treatment decisions for patients with respiratory distress or failure.