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 ...

Packing for a flight can be overwhelming, especially when it comes to what is and isn't allowed in your carry-on bag. Among the items that spark the most confusion are batteries. They are ubiquitous, ...

There are three types of second degree heart block, also called atrioventricular (AV) block. In type I the signal sometimes does not reach the ventricles, causing skipped beats. It is often benign and ...

Heart block is a type of arrhythmia that affects the electrical system of the heart and causes it to beat irregularly and slower than usual. A third degree heart block is the most serious type. It can ...