What vital sign is considered the sixth vital?

Pulse oximetry is often referred to as the sixth vital sign because it provides critical information about a patient's oxygen saturation levels, which is essential for assessing respiratory function and overall circulatory health. Traditional vital signs include temperature, pulse, respiration, blood pressure, and pain assessment, which help evaluate a patient's immediate health status.

Pulse oximetry complements these measures by offering insights into how effectively oxygen is being transported and utilized in the body. In clinical practice, especially in emergency and critical care settings, monitoring oxygen saturation has become increasingly important for detecting hypoxemia (low blood oxygen levels) early on, allowing for timely interventions. Recognizing pulse oximetry as an essential measure underscores the growing emphasis on identifying and managing respiratory issues, as well as its role in guiding treatment decisions.