Oxygen Saturation: What It Is and What a Pulse Oximeter Shows
Oxygen saturation shows how much oxygen the blood carries. We explain how a pulse oximeter works, what each number on the screen means, and when a doctor is needed.
Oxygen saturation shows how much oxygen the blood carries. We explain how a pulse oximeter works, what each number on the screen means, and when a doctor is needed.
Shortness of breath can occur with lung diseases, heart diseases, and anxiety. We explain how sudden differs from gradual, what tests are performed, and when every minute counts.