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Optimized System for Cerebral Perfusion Monitoring in the Rat Stroke Model of Intraluminal Middle Cerebral Artery Occlusion
Published on: February 17, 2013
CDI Blood Parameter Monitoring System 500--a new tool for the clinical perfusionist
D W Fried1, J J Leo, G J Mattioni
1Albert Einstein Medical Center, Philadelphia, Pennsylvania, USA.
The Journal of Extra-Corporeal Technology
|August 18, 2000
Summary
The CDI 500 system accurately monitors potassium levels and oxygen consumption (VO2/min). Minor adjustments for dissolved oxygen and operating range could enhance its performance for critical care monitoring.
Area of Science:
- Critical care medicine
- Biomedical engineering
- Clinical chemistry
Background:
- The Sarns/3M Health Care CDI 500 system offers continuous monitoring of vital blood parameters.
- This system now includes continuous measurement of oxygen consumption (VO2/min) and potassium concentration ([K+]).
Purpose of the Study:
- To validate the accuracy of the CDI 500's potassium ([K+]) measurements against a hospital laboratory standard.
- To assess the accuracy of the CDI 500's oxygen consumption (VO2/min) measurements compared to the Fick equation.
Main Methods:
- Comparative analysis of potassium ([K+]) measurements between the CDI 500 and hospital laboratory results.
- Validation of continuous oxygen consumption (VO2/min) data from the CDI 500 against the established Fick equation.
Main Results:
- The CDI 500 demonstrated strong correlation for potassium ([K+]) with a mean absolute difference of 0.10 mEq/L (3.93% error).
- Oxygen consumption (VO2/min) measurements showed a mean absolute difference of 18.78 ml O2/min (11.63% error).
- Dissolved oxygen exclusion accounted for 9.13% of the oxygen consumption error, with technological differences contributing 2.5%.
Conclusions:
- The CDI 500 system provides reliable potassium ([K+]) monitoring.
- Recommendations include incorporating dissolved oxygen in VO2/min calculations and expanding the operational range for [K+] monitoring.
