Monitoring of pH and PCO2 in children using the Paratrend 7 in a peripheral vein
To determine the accuracy of the Paratrend 7 monitor inserted into a peripheral vein in providing continuous measurements of PCO2 and pH in children with respiratory failure. In a prospective, case series at a University based PICU in a tertiary referral hospital and following informed consent, the...
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Published in | Canadian journal of anesthesia Vol. 45; no. 1; p. 81 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
United States
01.01.1998
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Subjects | |
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Abstract | To determine the accuracy of the Paratrend 7 monitor inserted into a peripheral vein in providing continuous measurements of PCO2 and pH in children with respiratory failure.
In a prospective, case series at a University based PICU in a tertiary referral hospital and following informed consent, the Paratrend 7 intra-arterial blood gas monitoring system was inserted through a peripheral intravenous cannula. When clinically indicated, an arterial blood gas (ABG) was obtained. The values of pH and PCO2 from the Paratrend 7 and the ABG were compared using linear regression analysis and Bland-Altman analysis.
Seventeen ABGs were obtained in the 4 patients. PaCO2 ranged from 29 to 51 mmHg and the pH values from 7.16 to 7.50. Linear regression analysis for the: Paratrend 7 pH vs the ABG pH resulted in an r = 0.9678 and an r2 = 0.9367 (P < 0.0001). Linear regression analysis for the Paratrend 7 CO2 vs ABG CO2 resulted in an r = 0.8273 and an r2 = 0.6845 (P = 0.01). Using a Bland and Altman analysis, the bias +/- precision of the PCO2 values was 3 +/- 1.4 and 0.036 +/- 0.02 for the pH values.
The pH and PCO2 values obtained from the Paratrend 7 monitor provide a clinically acceptable correlation with arterial values. |
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AbstractList | To determine the accuracy of the Paratrend 7 monitor inserted into a peripheral vein in providing continuous measurements of PCO2 and pH in children with respiratory failure.
In a prospective, case series at a University based PICU in a tertiary referral hospital and following informed consent, the Paratrend 7 intra-arterial blood gas monitoring system was inserted through a peripheral intravenous cannula. When clinically indicated, an arterial blood gas (ABG) was obtained. The values of pH and PCO2 from the Paratrend 7 and the ABG were compared using linear regression analysis and Bland-Altman analysis.
Seventeen ABGs were obtained in the 4 patients. PaCO2 ranged from 29 to 51 mmHg and the pH values from 7.16 to 7.50. Linear regression analysis for the: Paratrend 7 pH vs the ABG pH resulted in an r = 0.9678 and an r2 = 0.9367 (P < 0.0001). Linear regression analysis for the Paratrend 7 CO2 vs ABG CO2 resulted in an r = 0.8273 and an r2 = 0.6845 (P = 0.01). Using a Bland and Altman analysis, the bias +/- precision of the PCO2 values was 3 +/- 1.4 and 0.036 +/- 0.02 for the pH values.
The pH and PCO2 values obtained from the Paratrend 7 monitor provide a clinically acceptable correlation with arterial values. |
Author | Tobias, J D Meyer, Jr, D J Helikson, M A |
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SubjectTerms | Adolescent Arteries Bias Carbon Dioxide - blood Catheterization, Peripheral - instrumentation Catheters, Indwelling Child Child, Preschool Critical Care Female Humans Hydrogen-Ion Concentration Infant Linear Models Male Monitoring, Physiologic - instrumentation Prospective Studies Respiratory Insufficiency - blood Sensitivity and Specificity Veins |
Title | Monitoring of pH and PCO2 in children using the Paratrend 7 in a peripheral vein |
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