Why should the pulse oximeter not be used to assess HbO2 concentration in carbon monoxide poisoning?
A) O2 and CO have similar light-absorption spectra and thus give a falsely high value for HbO2
B) Because of any methemoglobin that might be present
C) Intravascular dyes for diagnostic purposes make the oximeter inaccurate
D) Because CO prevents the oximeter from reading oxygen
Correct Answer:
Verified
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