You must immediately begin monitoring the oxygenation status of an infant admitted to the emergency department in severe respiratory distress. Which of the following approaches would you select?
a. Pulse oximetry (SpO2)
b. Transcutaneous monitoring (PtcO2)
c. Arterial puncture (PaO2)
d. Intraarterial optode monitoring
ANS: A
In terms of technical limitations, the lengthy stabilization time needed by transcutaneous moni-tors precludes their use during short procedures or in emergencies. In such cases, the pulse oxi-meter is a better choice.
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