Factors affecting heated transcutaneous Po2 and unheated transcutaneous Po2 in preterm infants

Transcutaneous Oxygen and Carbon Dioxide during the First Half Year of Life in Premature and Normal Term Infants

“…In our normal healthy infants, comparison with arterial values was not warranted. Such a study was, however, performed previously and had yielded a correlation coeficient comparable to those obtained by others (18,23,25 In preterm and term infants during the first week of life, Hanson and Okken (6) reported a higher level of Ptco2 in QS than in AS. In our study, where the infants were at least 4 wk old, differences of Ptco2 during various states were restricted to variability and were not seen in levels.…”

Agreement of Carbon Dioxide Levels Measured by Arterial, Transcutaneous and End Tidal Methods in Preterm Infants ≤28 Weeks Gestation

“…Studies have shown that tissue perfusion and acidosis may alter such agreement. 17,18 Although we were not able to find differences in the correlation based on blood pressure, the sample size to assess the impact was probably inadequate. It is also possible that the technology, as currently available, is not yet ready to replace the gold standard.…”

A Comparison of Two Transcutaneous Monitors for the Measurement of Arterial Po2 and Pco2 in Neonates

“…Oxygen measured transcutaneously has typically been less closely associated with arterial levels than is the case for carbon dioxide. In neonates, correlation coefficients ranging from 0.72 to 0.98 have been reported 2 ,8,II,14, [16][17][18][19]. The mean differences between T0 2 and p0 2 in infants have been reported as 3 mmHg'6 while the bias and precision has been reported as 2.8±16.0 mmHg", 12.5±13.0 mmHg'S and 16.4±24.7 mmHg at p0 2 greater than 80 mmHg and 3.0±1O.2 mmHg at lower P022.…”