We examined the stability and accuracy of PtcCO2 measurements and the performance of a previously described linear interpolation technique designed to correct for calibration drift. METHODS: We compared the PtcCO2 values from 2 TINA TCM-3 monitors to PaCO2 values from arterial blood samples obtained at the beginning, every 15 min of the first hour, and then hourly over 8 hours of monitoring in 6 hemodynamically stable, male, intensive care patients (mean age 46 17 y).
Berlowitz, D., Spong, J., O'Donoghue, F., Pierce, R., Brown, D. J., Campbell, D. A., Catcheside, P., Gordon, I. R., & Rochford, P. D. (2011). Transcutaneous measurement of carbon dioxide tension during extended monitoring: Evaluation of accuracy and stability, and an algorithm for correcting calibration drift. Respiratory care, 56(4), 442 - 448. https://doi.org/10.4187/respcare.00454