A sudden decrease in end-tidal CO2 occurs in a mechanically ventilated patient. A repeat analysis yields the same results. Which of the following situations might have accounted for these readings?
A. The ventilator circuit has become disconnected.
B. There is a leak around the endotracheal tube.
C. There is an increase in alveolar dead space.
D. The carbon dioxide absorber is exhausted.
Answer: A. The ventilator circuit has become disconnected.
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