A heart rate monitor can be a useful tool for anyone interested in exercise because it allows a person to manage the intensity of a workout. This is important because personal fitness goals often ...

Your heart isn’t plugged into an outlet. And you don’t use a switch to turn it on. But just like a lamp, your heart runs on an electrical system. Every time your heart beats, an electrical signal ...

Second-degree heart block is a potentially serious but treatable condition affecting the heart’s electrical system. Treatment may require a pacemaker to stabilize the heart’s rhythm. Electrical ...

First-degree heart block is the mildest type and often requires no treatment. Third-degree heart block is the most severe and often needs a pacemaker to regulate the heartbeat. Many different causes ...

Heart block is a disruption in the electrical signals that control your heart. Your heart depends on a steady flow of electrical signals that start in the heart’s upper chambers (atria). The signals ...