Anesthesia Technologist Complete Practice Exam 2025

The term 'end-tidal CO2' specifically measures the concentration of carbon dioxide in the exhaled air at the end of expiration. This measurement is crucial for assessing respiratory function because it provides direct feedback regarding the efficiency of ventilation and the effectiveness of gas exchange in the lungs.

When a patient exhales, the level of carbon dioxide (which is a byproduct of metabolism) reaches its peak at the end of exhalation, hence the name "end-tidal." Monitoring end-tidal CO2 can help detect issues such as hypoventilation or hyperventilation, as well as overall respiratory status during anesthesia or critical care situations. It also serves to confirm proper placement of an endotracheal tube or assess the effectiveness of cardiopulmonary resuscitation (CPR) efforts.

Understanding this concept is essential for anesthesia technologists, as they play a role in monitoring patients' vital signs and ensuring adequate ventilation during procedures.