The electrical signals inside heart muscle cells provide insights into how the heart functions, how its cells communicate and how they respond to drugs. But capturing these signals typically involves ...

Add Yahoo as a preferred source to see more of our stories on Google. Electrocardiograms, or ECGs, record the electrical activity of your heart. Randy Faris/The Image Bank via Getty Images Your ...

Q: Even though my doctor told me I am pretty healthy, she ordered an electrocardiogram (ECG) to be done right in her office. Besides a heart attack, what else can ECGs show? A: Cardiac (heart) cells ...

As wearable health devices grow more popular in the U.S., there’s a growing opportunity to track the broader adult population’s heart health. But it’s much harder for an Apple Watch to accurately ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. The heart is an incredible machine, pumping blood to fuel ...

Complete heart block means that there’s a complete separation of electrical activity between the upper and lower chambers of the heart. Without prompt medical attention, it can be fatal. Your heart ...

Electrophysiology is a branch of medicine concerning the heart’s electrical system. An electrophysiologist tests the electrical activity of the heart and can diagnose and treat a number of conditions.

Electrocardiologists are cardiologists who have received additional training in testing for and treating heart rhythm problems. Electrocardiologists are also known as electrophysiologists, cardiac ...