Issue |
J Extra Corpor Technol
Volume 20, Number 4, December 1988
|
|
---|---|---|
Page(s) | 119 - 123 | |
DOI | https://doi.org/10.1051/ject/1988204119 | |
Published online | 25 August 2023 |
Original Article
Comparison of Arterial Oxygen Tension with Continuous lranscutaneous and Intravascular PO2 Sensors and Intermittent Blood Samples Taken from the Sampling Port of a Bubble Oxygenator
1
Biomedical Engineer, Intensive Therapy Unit, The Middlesex Hospital, Mortimer Street, London W1N 8AA
2
Director of ITU, The Middlesex Hospital, Mortimer Street, London W1N 8AA
* Dr. S V S Rithalia, Scientific Officer, Department of Orthopaedic Mechanics, University of Salford, Salford M5 4WT, UK, Tel 061 736 5843 Ex 7386
Measurements of transcutaneous PO2 (tc PO2), intraarterial PO2(PiO2) and PO2 of blood samples taken from the sampling port of the oxygenator (PoO2) were compared with arterial blood PO2 (PaO2) in 16 adult patients undergoing cardiopulmonary bypass. tcPO2 and PiO2 were recorded continuously using Roche-Kontron electrodes. PoO2 and PaO2 were measured intermittently on a Radiometer ABL2 blood gas analyser.
A total of 86 observations were made on the 16 patients. The correlation coefficient (r) between transcutaneous and arterial PO2 was 0.69 (p<0.001). The relationship between PoO2 and PaO2 was poor (r = 0.45, p<0.01). The intra-arterial electrode readings showed no significant difference with the PO2 measured on arterial blood samples (r=0.99, p<0.001).
Key words: blood sample collection / PO2 / monitoring / oxygenator / bubbler / PO2 / transcutaneous
© 1988 AMSECT
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