What is the primary purpose of exhaled CO2 detection devices?

The primary purpose of exhaled CO2 detection devices is to detect esophageal intubation. These devices measure the concentration of carbon dioxide in exhaled breath, which helps confirm proper placement of an endotracheal tube in the trachea. When the tube is correctly positioned, CO2 will be present in the exhaled air due to gas exchange occurring in the lungs. If the tube is placed in the esophagus instead, little to no CO2 will be detected, indicating a need to reposition the tube. This rapid assessment is crucial in ensuring effective ventilation and oxygenation, making exhaled CO2 detection an essential tool in the management of airway placement in emergency and clinical settings.