Pulse oximetry helps in measuring peripheral capillary oxygen saturation (SpO2) continuously and non-invasively, and provides an indirect measurement of arterial oxygenation (SaO2) based on the red and infrared light-absorption characteristics of oxygenated and deoxygenated hemoglobin. Uses of pulse oximetry include detection of hypoxia, avoidance of hyperoxia, titration of fractional inspired oxygen, and enabling weaning from mechanical ventilation. Arterial blood gas (ABG) analysis, such as by the use of CO-oximeter, provides a direct measurement of SaO2. However, ABG analysis requires time, expense, and arterial access. Therefore, this study aims to validate the SpO2 accuracy of pulse oximetry sensors (manufactured by Nellcor and Masimo, and reprocessed by Medline Industries, LP) in neonates as compared to ABG measurements as part of their clinical standard of care (SOC), as assessed by CO-oximetry.
