About this trial
Transcutaneous capnometry (tPCO₂) is a non-invasive method for continuous monitoring of ventilation status. In pediatric intensive care patients, it may reduce the need for repeated arterial or arterialized blood sampling. However, the accuracy of tPCO₂ may be influenced by factors such as peripheral perfusion, skin temperature, and vasopressor therapy. This prospective observational study compares transcutaneous carbon dioxide measurements with arterialized or arterial blood gas PaCO₂ values in children with respiratory insufficiency, including a subgroup receiving vasopressor support.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age 1-18 years
Diagnosis of respiratory insufficiency or impaired peripheral perfusion
Expected need for more than one arterialized capillary or arterial blood gas sample
Admission to PICU
Disqualifiers
Repeated failure of sensor adhesion
Hypothermia < 35 °C
Time difference > ±5 minutes between tPCO₂ and blood sampling
Large tPCO₂ variability (> ±1 kPa) in 15 minutes preceding blood sampling
Trial population
Critically ill pediatric patients admitted to a tertiary PICU with respiratory insufficiency or circulatory compromise.
Trial design
Cohort
Prospective
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
Partial CO2 difference
Agreement between transcutaneous CO₂ (tPCO₂) and arterialized or arterial PaCO₂ assessed using Bland-Altman analysis (bias, SD, 95% limits of agreement).
Secondary outcomes
Proportion of pCO2
Proportion of tPCO₂ values within ±1 kPa of PaCO₂
Partial O2
Agreement between transcutaneous oxygen (tPO₂) and PaO₂
Vassopressor use
Subgroup analysis based on presence of vasopressor support
Sponsors and contacts
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