The partial pressure of oxygen (pO2) in mmHg varies depending on the location being measured. There isn't a single "number" for how many mmHg oxygen is.
Here's a breakdown based on the provided context relating to skin PtO2 measurements:
- External Skin Layer: 3.2 to 8 mmHg
- Papillary Dermis: 6.4 to 24 mmHg
- Subcutaneous Fat: 8 to 38 mmHg
Therefore, the oxygen level in mmHg depends on the specific area of measurement. For example, arterial blood typically has a pO2 between 75 and 100 mmHg.
