Oxygen Extraction Ratio (O2ER) is the amount of oxygen extracted by the peripheral tissues (CaO2-CvO2) divided by the amount of oxygen delivered (CaO2) to the peripheral tissues.
Normal O2ER is around 0.25 or 25%
O2ER: Oxygen Extraction Ratio
CaO2: Arterial oxygen content (mmHg)
CvO2: Venous oxygen content (mmHg)
| CaO2: Arterial oxygen content: | mmHg |
| CvO2: Venous oxygen content | mmHg |
| O2ER: Oxygen Extraction Ratio |
