Blood & Oxygen Levels
An EKG can be used to detect the level of oxygen getting to your heart. For the heart to function properly, adequate oxygen must be supplied to it daily. The absence of adequate oxygen in the heart, due to vessel blockage or construction can lead to several heart disorders, including ischemia [3], a chronic condition that occurs when the cardiac tissue does not get enough blood.
The muscles in your heart get extremely weak if ischemia goes on for a long time. This can lead to heart failure and death. Healthcare providers use an EKG test to measure the level of oxygen going to your heart.