The shape of the expired CO₂tracing of a patient is normal but instead of being zero, the baseline is elevated to about 12 mm Hg. Which of the following is the most likely problem?

Question

Quizplus · Accepted Answer

An elevated baseline on a CO₂ tracing can suggest that the patient is rebreathing and not exhaling all of their carbon dioxide. This can occur if the breathing circuit is not properly ventilated or if the patient is not properly connected to the system. Obstruction of the sampling tube or the presence of N₂O would likely cause other abnormalities in the tracing rather than just an elevated baseline.

The Shape of the Expired CO2 tracing of a Patient

The Shape of the Expired CO₂tracing of a Patient