| 摘要 |
<p>A method for converting a partial pressure of oxygen (pO2) value in blood at a measurement temperature to a corresponding value at a reference temperature (37 °C). A pO2 value is determined by measurements made in a partient's blood stream using a phosphorescent compound sensitive to oxygen concentration. The compound is illuminated with a short pulse of light, causing a phosphorescent emission having a rate of decay that varies as the function of the pO2 in the blood. A detector (34) produces an electrical signal corresponding to the intensity of the emission, and the signal is converted to a corresponding digital value for input to a microcomputer (12). Supplied to the microcomputer in digital form is a signal indicative of the temperature at the measurement site where the compound is disposed. The microcomputer determines phosphorescent decay rate and from that determines pO2 at the measurement site for measurement temperature.</p> |
