The PaO2 measurement shows the oxygen pressure in the blood. Most healthy adults have a PaO2 within the normal range of 80–100 mmHg. If a PaO2 level is lower than 80 mmHg, it means that a person is not getting enough oxygen.Click to see full answer. Also to know is, what is a normal pO2 on an ABG?As an example, the normal PO2 (partial pressure of oxygen) is 80? 100 mmhg. All this should really mean to us is that in arterial blood, 80 to 100 mmHg represents the “amount” of oxygen that is dissolved in each 100 ml of the arterial blood.Also Know, what does it mean if pO2 is low? Blood Gas Components pO2: This is measured by a pO2 electrode. It is the partial pressure (tension) of oxygen in a gas phase in equilibrium with blood. High or low values indicate blood hyperoxia or hypoxia, respectively. pO2 in venous blood is lower than arterial blood due to oxygen extraction by peripheral tissues. Keeping this in consideration, what does a high PaO2 mean? PO2 (partial pressure of oxygen) reflects the amount of oxygen gas dissolved in the blood. It primarily measures the effectiveness of the lungs in pulling oxygen into the blood stream from the atmosphere. Elevated pO2 levels are associated with: Increased oxygen levels in the inhaled air.What is PaO2 normal range?The PaO2 measurement shows the oxygen pressure in the blood. Most healthy adults have a PaO2 within the normal range of 80–100 mmHg. If a PaO2 level is lower than 80 mmHg, it means that a person is not getting enough oxygen.