A dual-chamber wireless pacemaker provides reliable performance over three months, bolstering evidence for this new pacemaker option, according to results from a multi-center, international clinical ...

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 ...

You're curled up on the couch, finally relaxing after a long day when suddenly, your heart starts racing. You're obviously not exercising and you don't think you're stressed, so why does it feel like ...

With heart failure, the heart becomes enlarged and its electrical systems become stretched. This interferes with how the parts of the heart coordinate to contract and pump blood, making it inefficient ...

The sinoatrial (SA) node is the natural pacemaker of the heart. It generates electrical impulses that cause the heart’s chambers to contract, setting the heart rate. The SA node typically generates 60 ...

While pacemakers help treat arrhythmia, they don’t prevent heart attacks. Heart attacks can be difficult to diagnose in people with pacemakers, potentially leading to treatment delays. Call emergency ...