Partial pressure of end-tidal carbon dioxide, often abbreviated as PETCO2, is a non-invasive measurement that reflects the level of carbon dioxide at the end of an exhaled breath. Monitoring this value is crucial when altering the rate and depth of mechanical breaths delivered to a patient. For example, if a patient is hyperventilating and experiencing respiratory alkalosis, adjustments to the ventilator settings, guided by PETCO2 readings, can help normalize the patient’s blood pH.
Maintaining appropriate levels is vital for ensuring adequate gas exchange and preventing complications. Historically, arterial blood gas analysis was the primary method for assessing carbon dioxide levels; however, continuous monitoring offers real-time data, enabling clinicians to respond promptly to changes in a patient’s respiratory status. This proactive approach can improve patient outcomes and reduce the need for invasive procedures.
