Heart Block

First Degree AV Block

As asymptomatic type of heart block that is mild.

Second Degree Block

This type of heart block is more serious, causing patients to suffer symptoms such as fainting, dizziness, and fatigue. This heart block is split in Mobitz Type I (Wenckebach) and Mobitz Type II.

Third Degree AV Block

The most severe type of heart block, patients with third degree AV block can suffer the same symptoms as second degree AV block, and can even be at risk for death.