What is the conversion factor for pco2 from mmHg to mmol L?
The solubility coefficient (S) for carbon dioxide at body temperature is 0.23 mmol/L/kPa (or 0.03 mmol/mmHg) . Thus since arterial pCO2 is approximately 5.3 kPa (40 mmHg), the amount of CO2 dissolved in arterial blood (dCO2) is (5.3 x 0.23) or 40 x 0.03) = 1.2 mmol/L.
What is a pressure of 60 kPa equal to in mmHg?
mmHg 0°C pressure related products
What is the conversion factor from kPa to mmHg?
kPa↔mmHg 1 kPa = 7.500617 mmHg.
Should I use kPa or mmHg?
KPa is widely used internationally as a unit of pressure and also measures eg the tyre pressure of cars. The unit mmHg (millimeter mercury column) is also used to measure blood pressure.
Which countries use kPa for blood pressure?
In contrast, in Australia and China the units “kilo-Pascal (kPa)” and “mega-Pascal (MPa)” have become established. In North America, the preferred pressure unit is “psi (pounds per square inch)”. In many Asian countries, such as India and Korea, the unit “kilogram per square centimetre (kg/cm²)” is found quite often.
What is the normal range of pCO2?
Generally, under normal physiologic conditions, the value of PCO2 ranges between 35 to 45 mmHg, or 4.7 to 6.0 kPa. Typically the measurement of PCO2 is performed via an arterial blood gas; however, there are other methods such as peripheral venous, central venous, or mixed venous sampling.
What is the normal range of partial pressure of carbon dioxide?
The partial pressure of carbon dioxide (PCO2) is the measure of carbon dioxide within arterial or venous blood. It often serves as a marker of sufficient alveolar ventilation within the lungs. Generally, under normal physiologic conditions, the value of PCO2 ranges between 35 to 45 mmHg, or 4.7 to 6.0 kPa.
What does the PaCO2 and HCO3 values indicate?
The PaCO2 is decreased, indicating a respiratory alkalosis, and the HCO3 is normal but on the low end of normal. The value consistent with the pH is the PaCO2. Therefore, this is a primary respiratory alkalosis. The HCO3 is in the range of normal and, thus, not inconsistent with the pH, so there is a lack of compensation.
What is the relationship between pH and PaCO2?
It is the change in local PaCO2 as well as the change in pH that causes a change in minute ventilation. Under normal physiologic conditions, an increase in PCO2 causes a decrease in pH, which will increase minute ventilation and therefore increase alveolar ventilation to attempt to reach homeostasis.