Capnography monitors the CO2 being exhaled through the respiratory tract.

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Multiple Choice

Capnography monitors the CO2 being exhaled through the respiratory tract.

Explanation:
Capnography measures the CO2 in exhaled air, providing a real-time readout (end-tidal CO2) and a CO2 waveform that reflect how well ventilation is removing CO2 from the lungs. This directly tracks what’s being exhaled, which is why the correct choice is the CO2 in exhaled air. Blood pressure, oxygen saturation, and temperature are measured with different sensors and reflect different physiological parameters (circulation, oxygenation, and heat), not the CO2 content of the breath.

Capnography measures the CO2 in exhaled air, providing a real-time readout (end-tidal CO2) and a CO2 waveform that reflect how well ventilation is removing CO2 from the lungs. This directly tracks what’s being exhaled, which is why the correct choice is the CO2 in exhaled air. Blood pressure, oxygen saturation, and temperature are measured with different sensors and reflect different physiological parameters (circulation, oxygenation, and heat), not the CO2 content of the breath.

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