What does "capn" in medical terms most closely denote?

The prefix "capn" in medical terminology is derived from the Greek word "kapnos," which means smoke or vapor, but more notably in a medical context, it specifically relates to carbon dioxide. When used in terms such as "capnography," it pertains to measuring the concentration of carbon dioxide in exhaled air. This measurement is vital in clinical settings to assess a patient's respiratory function and monitor conditions such as hypoventilation or other respiratory disorders. Understanding that "capn" identifies carbon dioxide levels is crucial for interpreting various medical assessments and ensuring appropriate respiratory care.