In the normal human body, the highest partial pressure of carbon dioxide is found in tissue fluid aggregates, and the highest partial pressure of blood carbon dioxide is found in venous blood. Diseases such as chronic obstructive pulmonary disease can lead to abnormal indicators.
The partial pressure of carbon dioxide refers to the pressure generated by carbon dioxide molecules dissolved in the blood, which can be roughly understood as the amount of carbon dioxide in plasma, tissue fluid, cerebrospinal fluid and other fluids in the body. Since most of the carbon dioxide produced by the metabolism of the body’s cells goes into the tissue fluid, the tissue fluid has the highest partial pressure of carbon dioxide.
If the partial pressure of blood carbon dioxide, the partial pressure of carbon dioxide in venous blood of the body circulation is greater than that in arterial blood. Abnormal partial pressure of carbon dioxide may occur in the presence of chronic obstructive pulmonary disease (COPD), acute respiratory distress syndrome (ARDS), asthma, and other disorders that affect pulmonary ventilation and lung gas exchange.
It is recommended to go to the hospital promptly when this indicator is abnormal.