Pulse Oximetry
A noninvasive method that estimates blood oxygen saturation and pulse rate using a light-based sensor clipped to a finger or earlobe. It is a routine vital-sign monitor during anesthesia and recovery in ambulatory surgery centers.
What is pulse oximetry?
Pulse oximetry is a noninvasive technique for estimating the oxygen saturation of a patient's blood along with their pulse rate. A small sensor, usually clipped to a fingertip or earlobe, shines light through the tissue and measures how much is absorbed to calculate the percentage of hemoglobin carrying oxygen.
Because it is painless, continuous, and immediate, pulse oximetry has become a standard vital-sign tool across nearly every clinical setting. The reading, often called the SpO2, gives clinicians a quick window into how well a patient is oxygenating.
How is pulse oximetry used in an ASC?
In an ambulatory surgery center, pulse oximetry is a routine part of monitoring during anesthesia, the procedure itself, and recovery. It provides early warning of falling oxygen levels so the care team can intervene before a problem becomes serious.
Its low cost and reliability make it foundational to safe outpatient sedation and post-anesthesia care, where rapid detection of respiratory compromise is essential to discharging patients safely on the same day.
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