What laboratory value indicates effective oxygenation in a patient?

The value indicating effective oxygenation in a patient is a partial pressure of oxygen (PaO2) above 80 torr. This level signifies that the lungs are adequately delivering oxygen to the bloodstream, which is crucial for the proper functioning of tissues and organs. A PaO2 reading above 80 torr suggests that there is sufficient oxygen available for hemoglobin binding and adequate oxygen delivery to the body's cells.

When the PaO2 drops below this threshold, it indicates hypoxemia, which can lead to various complications if not addressed. Effective oxygenation is essential for maintaining cellular metabolism and overall physiological stability. Therefore, a PaO2 above 80 torr is a key indicator of adequate respiratory function and oxygenation status in patients.