We conclude that, with certain caveats in mind, including the need to correlate the transcutaneous CO2 with an initial arterial CO2 value, transcutaneous CO2 monitoring can be used to estimate arterial CO2 in most neonates and children after cardiothoracic surgery.
To determine the accuracy of the Paratrend 7 monitor inserted into a peripheral vein in providing continuous measurements of PCO 2 and pH in children with respiratory failure. Methods" 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 PCO 2 from the Paratrend 7 and the ABG were compared using linear regression analysis and Bland-Altman analysis. Results" Seventeen ABGs were obtained in the 4 patients. Pac02 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 r 2 = 0.9367 (P < 0.0001). Linear regression analysis for the Paratrend 7 CO 2 vs ABG CO 2 resulted in an r = 0.8273 and an r 2 = 0.6845 (P = 0.01). Using a Bland and Altman analysis, the bias ___ precision of the PCO 2 values was 3-1.4 and 0.036-0.02 for the pH values. Conclusion: The pH and PCO 2 values obtained from the Paratrend 7 monitor provide a clinically acceptable correlation with arterial values. Objectis DEterminer la precision du moniteur Paratrend 7 insErE dans une veine pEriphErique pour la mesure continue de la PCO 2 et du pH chez des enfants souffrant d'insufi%ance respiratoire.
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