Medically reviewed by Steffini Stalos, DO Key Takeaways The oxygen desaturation index (ODI) measures how often and how much your blood oxygen level drops while you sleep.A normal ODI is fewer than ...

A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s often triggered by lung or heart conditions like COPD, asthma, or heart ...

A study led by biomedical scientist Erica Heinrich at the University of California, Riverside, highlights a critical gap in how clinicians detect and treat breathing distress (dyspnea), particularly ...