Second degree heart block is when "electrical signals between the atria and ventricles are slowed to a large degree, some signals don’t reach the ventricles" (Nihgov, 2016). This can be seen in a pattern or it may be random, it can also come and go, this is known as a "dropped heartbeat." There are two categories in second degree heart block, one is worse than the other and rarer.
The more common type of second degree heart block is type I, also known as wenckebach's block. Type I is described as a delay in the electrical signal for three to four beats that are progressively longer and longer with each beat until one signal is completely blocked and the ventricles skip a contraction. "This block usually occurs in …show more content…
When a patient has third degree heart block the electrical signals in the heart are completely blocked between the atrium and ventricles. The ventricles do not contract with the atrium; on occasion the heart has a backup system that will cause the ventricles to spontaneously contract on their own. When a patient has complete heart block their heart rate there is usually excessively slow and the atrium and ventricles have a different rate that they beat. In third degree heart block the atrium typically beat at a rate of sixty to one hundred beats per minutes and the ventricles beat at about ten to forty beats per minutes. Patients presenting with third degree heart block have many symptoms, on top of not feeling well they can have dizziness, fainting spells, fatigue, chest pain, and shortness of breath. Third degree heart block can cause sudden cardiac arrest in patients which can cause death. The patient will need the placement of a permanent pacemaker implant. "When a patient is born with third degree heart block they may not present with any symptoms at birth or early childhood but will eventually need a pacemaker implanted" (Nihgov,