| Issue |
J Extra Corpor Technol
Volume 20, 1988
Proceedings of AmSECT’s 26th International Conference
|
|
|---|---|---|
| Page(s) | 1 - 6 | |
| DOI | https://doi.org/10.1051/ject/198820S001 | |
| Published online | 25 August 2023 | |
Original Article
Comparison of the Response Time of Various Sensors for Continuous Monitoring of Blood Gases, pH and O2 Saturation During Cardiopulmonary Bypass
1
PSICOR, Inc. San Diego, CA
2
Baxter Bentley Laboratories, Inc. Irvine, CA
3
Biomedical Sensors, Inc. Kansas City, MO
* Direct communication to: Jeffrey B. Riley, PSICOR, Inc., 16818 Via Del Campo Court, San Diego, CA 92127.
The rise times and decay times of the currently available, continuous blood gas and pH monitors' sensors were evaluated at 37°C and 25°C.
An INVITRO human blood circuit was employed to apply step functions in pH, pCO2, pO2 and SO2 to the monitor sensors. The 10% and 90% response and the time to respond (reach 10% response) for the sensors are as follows:
Continuous and discrete monitors for cardiopulmonary bypass have inherent measureable response delays. The Inherent delays In the sterile diffusion barriers of the sensor flow-through connectors for the continuous monitors is probably the greatest source of interference in accuracy studies involving discrete sampling versus continuous monitoring techniques during CPB.
© 1988 AMSECT
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