Which of the following devices should be used for noninvasive monitoring of oxygen tension of a premature newborn?

Question

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Newborns are usually monitored with transcutaneous PO₂ monitors because they are noninvasive and the ratio of transcutaneous PO₂ to PaO₂ measured by hemoximetry has been shown to be good for neonatal use.In vivo PO₂ and point-of-care PO₂ are invasive.Pulse oximetry is affected by light sources such as heat lamps used with premature newborns and is therefore not used with these patients.

Which of the Following Devices Should Be Used for Noninvasive