CIRCUL™ Pulse Oximetry Wearable Technology Demonstrated Statistically Significant Correlation in Delivering Stable Oxygen Saturation Value in Dark-Pigmented Individuals

Saturations from pulse oximetry (SpO₂) may overestimate arterial oxygen saturations measured by CO-oximetry (SaO₂). The overestimation can be affected by location of measurement, perfusion, and skin color. Previous studies are limited by small numbers of observations in a hypoxemic range.

This large sample of hypoxemic patients identified that SpO₂ typically overestimates SaO₂. Bias and precision varied throughout the SpO₂ range. The SpO₂ range of 81% to 85% had the greatest bias: median SpO₂ 6% higher than SaO₂ measured by CO-oximetry. (Read the full article)

Neonatal coarctation of the aorta (CoA) is a life-threatening cardiac defect, but because symptoms may be lacking initially, newborns with this defect are frequently discharged from the hospital undiagnosed. Delayed diagnosis of CoA is associated with increased morbidity and mortality.

This population-based study analyzes the contribution of prenatal ultrasound and postnatal pulse oximetry screening to the timely diagnosis of neonatal CoA. Both screening methods had low sensitivity for CoA. Nearly half of all newborns with isolated CoA were discharged undiagnosed. (Read the full article)