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 ...

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 ...

Also known as complete heart block, third-degree heart block is the most serious type of heart block. Considered a medical emergency, it can be fatal without prompt treatment. The steady beating of ...

Mobitz type I heart block, a type of second-degree AV block, occurs when electrical signals progressively slow down, causing the heart to occasionally skip a beat. Most individuals with Mobitz type I ...

People with third degree heart block have an irregular heartbeat due to a total blockage of the electrical impulses that control the heart’s activity. It can lead to faintness and breathing difficulty ...