Accurately measuring electrical signals and calcium levels in the heart can lead to earlier treatment of potentially fatal conditions, such as heart attack or congestive heart failure. Calcium plays ...

An exercise stress test, also known as a heart stress test, evaluates how well your heart functions during physical activity. Your heart requires more oxygen when you work out. You might not ...

A heart-lung machine takes over the work of the heart and lungs during surgeries. It oxygenates and circulates blood when a person's heart or lungs can't work properly. While essential, using a ...