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: My mom is 93, and her doctor says she needs a pacemaker to control a heart arrhythmia. How does a pacemaker work? Is the operation dangerous for someone her age?

CHICAGO — One person’s used pacemaker is another person’s treasure. A program to refurbish used pacemakers could expand access to the lifesaving devices. In a clinical trial of nearly 300 people, ...

Pacemakers and defibrillators are devices that sit under the skin, in the chest area near a patient's heart. They help with controlling abnormal heart rhythms. A pacemaker can treat an abnormally slow ...

A new injectable, temporary pacemaker could help correct a heart arrhythmia in an emergency. This nanoparticle gel can regulate the heart’s electrical signals for up to five days before dissolving ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Virginia Singla, University of Pittsburgh (THE CONVERSATION) Your heart's job is to ...