D. Transcutaneous Monitoring
Surface monitoring devices may be used in neonates to track both tissue
CO 2 and O2 llevels. Each may report values for gas partial pressure validated to
track the trend of capillary gas concentrations, but do not report hemoglobin
oxygen saturation. The devices are generally applied on the trunk and generally
must be moved every two days or more frequently. Limitations of the technology
include overestimation of systemic PCO2, underestimation of arterial PO2, and
sensitivity to variations in cutaneous perfusion. These devices are generally
used in neonates only.
IV. Cardiac Monitoring