What does capnography measure in a medical setting?

Capnography measures the concentration of carbon dioxide in exhaled air, providing critical information about a patient's respiratory status. This measurement is captured by a device that registers the level of CO2, typically displayed on a waveform or a numerical scale. It is particularly useful for monitoring ventilation, especially in patients undergoing sedation, those requiring mechanical ventilation, or during resuscitation efforts.

By analyzing the levels of carbon dioxide, paramedics and medical professionals can assess whether the patient is adequately eliminating CO2, which is indicative of effective ventilation and overall respiratory function. An elevated level of CO2 may suggest hypoventilation, while a decreased level could indicate hyperventilation or inadequate perfusion. Thus, capnography plays a vital role in ensuring that patients are breathing adequately and helps guide interventions effectively.