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

The normal range for arterial oxygen pressure (PaO2) is indeed 80-100 mmHg. This range indicates that the blood is adequately saturated with oxygen, ensuring that the body's tissues receive sufficient oxygen for metabolic processes. PaO2 is a critical measure in assessing a patient's oxygenation status, and values outside this range can indicate various clinical conditions.

For example, values below 80 mmHg might suggest hypoxemia, which could lead to tissue and organ dysfunction if not addressed, while values above 100 mmHg might indicate hyperoxemia, which can also have adverse effects on the lungs and other organ systems. Understanding the normal range is essential for healthcare professionals in diagnosing and managing respiratory conditions effectively.