What is a normal venous po2?
What is a normal venous po2?
TABLE I: Arterial and venous blood gas reference range
| Arterial | Venous | |
|---|---|---|
| pCO2 (mmHg) | 35 -45 | 41 – 51 |
| Bicarbonate (mmol/L) | 22-28 | 23-29 |
| PO2 (kPa) | 10.6 – 13.3 | 4.0 -5.3 |
| pO2 (mmHg) | 80-100 | 30 -40 |
What is oxygen saturation of venous blood?
Venous oxygen saturation (SvO2) is a measure of the oxygen content of the blood returning to the right side of the heart after perfusing the entire body. When the oxygen supply is insufficient to meet the metabolic demands of the tissues, an abnormal SvO2 ensues and reflects an inadequacy in the systemic oxygenation.
What is mixed venous po2?
Mixed venous oxygen saturation (SvO2) is the percentage of oxygen bound to hemoglobin in blood returning to the right side of the heart. This refects the amount of oxygen “left over” after the tissues remove what they need.
Why would venous O2 be high?
Causes of Abnormally High Levels Venous oxygen saturation and tension increase with impairment of oxygen extraction and utilization, typically due to mitochondrial dysfunction (ie, post-cardiac arrest, severe colitis). Arterial oxygen content and delivery may be normal, with shunting occuring at the tissue level.
What does pO2 mean in medical terms?
Values of partial pressure of oxygen (PO2) and of carbon dioxide (PCO2) were measured by means of blood gas electrodes.
What does a vO2 diff refer to?
The arteriovenous oxygen difference, or a-vO2 diff, is the difference in the oxygen content of the blood between the arterial blood and the venous blood. It is an indication of how much oxygen is removed from the blood in capillaries as the blood circulates in the body.
Why is pO2 important?
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.
