Tag Archives: First-Degree Atrioventricular Block

First-degree atrioventricular (AV) block is a condition that causes the electrical signals that travel from the heart’s upper chambers (atria) to its lower chambers (ventricles) to move too slowly. As a result, the heart may beat more slowly than normal. First-degree AV block is the least serious type of heart block. Second- and third-degree AV […]