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Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension

AIM: The harmful effect of hypocapnia on the neonatal brain emphasizes the importance of monitoring arterial carbon dioxide tension (PaCO2). Transcutaneous monitoring of carbon dioxide (tcPCO2) reduces the need for arterial blood sampling. Drawbacks are high electrode temperature causing risks of sk...

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Autores principales: Sørensen, Line C, Brage-Andersen, Lene, Greisen, Gorm
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Informa Healthcare 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3212912/
https://www.ncbi.nlm.nih.gov/pubmed/21732731
http://dx.doi.org/10.3109/00365513.2011.590601
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author Sørensen, Line C
Brage-Andersen, Lene
Greisen, Gorm
author_facet Sørensen, Line C
Brage-Andersen, Lene
Greisen, Gorm
author_sort Sørensen, Line C
collection PubMed
description AIM: The harmful effect of hypocapnia on the neonatal brain emphasizes the importance of monitoring arterial carbon dioxide tension (PaCO2). Transcutaneous monitoring of carbon dioxide (tcPCO2) reduces the need for arterial blood sampling. Drawbacks are high electrode temperature causing risks of skin burning. The aim was to determine the accuracy and precision of tcPCO2 at reduced electrode temperature. METHODS: Forty newborns (GA 24.9-41.7) were included. Two tc-monitors were applied (TCM4, Radiometer, Copenhagen). Arterial blood gas sampling and monitoring of tcPCO2-level at different electrode temperatures was done simultaneously (39°C, 40°C, 41 °C, 42°C, 44°C). Difference of PaCO2-tcPCO2 was expressed as a percentage of the mean. RESULTS: Mean PaCO2 was 5.8kPa [3,2; 7.9]. Bias (PaCO2 -tcPCO2) increased from 5% at 44°C to 17% at 39°C, but did not differ significantly between 41°C and 40°C. The precision of the tcPCO2 at each temperature ranged from +7-10%. After correction for the temperature-dependent over-reading, we found increasing PaCO2 — tcPCO2 difference with increasing PaCO2, approx. 2% pr. kPa increase of CO(2). Only mild transient erythema was observed. CONCLUSION: A lower electrode temperature in tcPCO2-monitoring increases systematic overreading of the tc-electrode. However, in very preterm babies, monitoring at 40°C or 41°C is possible provided a bias correction of 12-15% is applied.
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spelling pubmed-32129122011-11-14 Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension Sørensen, Line C Brage-Andersen, Lene Greisen, Gorm Scand J Clin Lab Invest Original Article AIM: The harmful effect of hypocapnia on the neonatal brain emphasizes the importance of monitoring arterial carbon dioxide tension (PaCO2). Transcutaneous monitoring of carbon dioxide (tcPCO2) reduces the need for arterial blood sampling. Drawbacks are high electrode temperature causing risks of skin burning. The aim was to determine the accuracy and precision of tcPCO2 at reduced electrode temperature. METHODS: Forty newborns (GA 24.9-41.7) were included. Two tc-monitors were applied (TCM4, Radiometer, Copenhagen). Arterial blood gas sampling and monitoring of tcPCO2-level at different electrode temperatures was done simultaneously (39°C, 40°C, 41 °C, 42°C, 44°C). Difference of PaCO2-tcPCO2 was expressed as a percentage of the mean. RESULTS: Mean PaCO2 was 5.8kPa [3,2; 7.9]. Bias (PaCO2 -tcPCO2) increased from 5% at 44°C to 17% at 39°C, but did not differ significantly between 41°C and 40°C. The precision of the tcPCO2 at each temperature ranged from +7-10%. After correction for the temperature-dependent over-reading, we found increasing PaCO2 — tcPCO2 difference with increasing PaCO2, approx. 2% pr. kPa increase of CO(2). Only mild transient erythema was observed. CONCLUSION: A lower electrode temperature in tcPCO2-monitoring increases systematic overreading of the tc-electrode. However, in very preterm babies, monitoring at 40°C or 41°C is possible provided a bias correction of 12-15% is applied. Informa Healthcare 2011-11 2011-07-06 /pmc/articles/PMC3212912/ /pubmed/21732731 http://dx.doi.org/10.3109/00365513.2011.590601 Text en © 2011 Informa Healthcare http://creativecommons.org/licenses/by/2.0/ This is an open access article distributed under the Supplemental Terms and Conditions for iOpenAccess articles published in Informa Healthcare journals (http://www.informaworld.com/mpp/uploads/iopenaccess_tcs.pdf) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Sørensen, Line C
Brage-Andersen, Lene
Greisen, Gorm
Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
title Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
title_full Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
title_fullStr Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
title_full_unstemmed Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
title_short Effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
title_sort effects of the transcutaneous electrode temperature on the accuracy of transcutaneous carbon dioxide tension
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3212912/
https://www.ncbi.nlm.nih.gov/pubmed/21732731
http://dx.doi.org/10.3109/00365513.2011.590601
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