| Issue |
J Extra Corpor Technol
Volume 15, Number 4, August 1983
|
|
|---|---|---|
| Page(s) | 89 - 95 | |
| DOI | https://doi.org/10.1051/ject/198315489 | |
| Published online | 15 September 2023 | |
Original Article
Accuracy of Oxygen Partial Pressure Measurements: An In-Vitro Study
RMI, Inc., Westlake Village, California
* Direct Communications to: Gary D. Reeder, 2500 Townsgate Rd., Suite E Westlake Village, CA 91361
The accuracy of oxygen partial pressure (pO2) analysis was examined in two commercially available systems, an IL 513 blood gas analyzer and a new in-line sensor from Orange Medical Instruments.
Data was obtained with each system after equilibration of an in vitro test circuit with specially formulated tonometry gases. The response of each system was examined over a pO2 range from 19 Torr to 400 Torr. The effect of hypothermia on analytical accuracy of each system was evaluated over a range of 37°C to 21.5°C.
A high degree of temperature dependent error was found with analysis on an IL 513 system. This resulted in significant underestimation of true pO2 under most conditions examined. In contrast, the in-line sensor was found to report significantly more accurate data with less temperature dependence.
© 1983 AMSECT
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