What vital sign is considered the sixth vital?

Pulse oximetry is often considered the "sixth vital sign" due to its crucial role in assessing a patient's oxygen saturation levels. In clinical practice, the traditional five vital signs include temperature, pulse, respiration, blood pressure, and pain. However, as the understanding of respiratory function and its impact on overall health has evolved, healthcare professionals recognize the importance of monitoring oxygen levels, particularly for patients with respiratory issues, cardiovascular conditions, or in critical care settings.

Pulse oximetry provides immediate insight into whether a patient is receiving adequate oxygenation, enabling timely interventions that can be life-saving. The ability to continuously and non-invasively monitor oxygen saturation supports better assessment and management of a patient's respiratory status, which is particularly vital in emergency situations or during surgical procedures. This acknowledgment of pulse oximetry as the sixth vital sign underscores the importance of thorough assessments in providing comprehensive care.