Your heart’s job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you’re relaxing, and sometimes it’s faster when you’re exercising or stressed ...

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 ...

Sept. 25 (UPI) --Researchers have succeeded in creating a digital twin that for the first time replicates the heart's electrical conduction system, which coordinates heartbeats, a new study says. The ...

American Heart Association researchers found heart rhythms in the first pig-to-human heart transplant changed from what is expected from a pig heart. The first pig-to-human heart transplant was ...

Arrhythmias are due to problems with your heart’s electrical pathways, affecting its rate or rhythm. Heart conditions, electrolyte imbalances, and certain medications are among the causes that can ...

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 ...