After intubation of a cardiac arrest victim, you observe a slow but steady rise in the expired CO2 levels as measured by a bedside capnometer. Which of the following best explains this observa-tion?
a. Return of spontaneous circulation
b. Abnormally high
c. Placement of the endotracheal tube in the esophagus
d. Failure of the cuff to properly seal the airway
ANS: A
Generally, expired CO2 levels increase with the return of spontaneous circulation.
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