What is the normal range for ETCO2?

The normal range for end-tidal carbon dioxide (ETCO2) is 35 to 45 mmHg. Maintaining ETCO2 within this range is crucial as it reflects adequate ventilation and overall respiratory function in a patient. This value is significant in various clinical settings, as it indicates the body's ability to expel carbon dioxide, a key waste product of metabolism.

Values below this range can suggest hyperventilation or low metabolic activity, which may lead to respiratory alkalosis, while values above this range can suggest hypoventilation or excess carbon dioxide in the system, possibly leading to respiratory acidosis. Monitoring ETCO2 helps healthcare providers assess the patient's ventilation status and ensure appropriate respiratory support is being provided, making it a vital parameter in both emergency and critical care environments.