If you are born with heart block, you have congenital heart block. This can result in no pulse or a very slow pulse if a back up heart rate is present. There is a complete failure of electrical conduction. Third-degree heart block is the most severe.В Electrical signals do not go from your atria to your ventricles at all with this type.This type of heart block can often progress to third degree heart block. There is no progressive slowing of the electrical signal. Mobitz type II: The electrical signals sometimes get to the ventricles, and sometimes they do not.Mobitz type I: The electrical signals get slower and slower between beats.There are 2 types of second-degree heart block Second-degree heart blockВ means that the electrical signals between your atria and ventricles can intermittently fail to conduct.First-degree heart block might not require treatment of any kind. The electrical signals slow down as they move from your atria to your ventricles. First-degree heart blockВ is the least severe.Heart block is categorized as first-, second-, or third-degree: In most cases of heart block, the signals slow down, but do not completely stop.

If the electrical signals canвЂ™t move from your atria to your ventricles, they canвЂ™t tell your ventricles to contract and pump blood correctly. These signals tell your heart when to beat. When you have heart block, there is interference with the electrical signals that usually move from the atria to the ventricles. The normal timing of heartbeats is generated in the upper chamber of the heart (atria) in a structure called the sinus node. They tell your heart muscle when to contract, a process known as conduction.

Electrical signals control the beating of your heart.

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